https://ntp.niehs.nih.gov/go/4707

TDMS Study 05214-02 Pathology Tables

NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96
Route: GAVAGE                                                                                                     Time: 15:13:29
       Facility:  TSI Mason Research
       Chemical CAS #:  1972-08-3
       Lock Date:  06/01/92
       Cage Range:  All
       Reasons For Removal:    All
       Removal Date Range:     All
       Treatment Groups:       Include All
                                                              Page   1
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 0| 7| 7| 7| 6| 7| 3| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 4| 4| 4| 2| 3| 3| 0| 4| 5| 4| 4| 4| 1| 4| 3| 4| 4| 4| 3| 4| 4| 4| 3| 3|             
                                           | 0| 2| 0| 3| 3| 7| 7| 6| 1| 9| 0| 3| 0| 8| 2| 7| 1| 3| 1| 7| 0| 0| 1| 7| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Clear Cell Focus                     |                                                                   X      |             
      Eosinophilic Focus                   |       X                 X        X              X     X  X        X      |             
      Fatty Change                         |       1                    2  1                          1           1   |             
      Hematopoietic Cell Proliferation     |                                              1                          2|             
      Infiltration Cellular, Lymphocyte    |       2                                                                  |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |                                        2                                 |             
      Mixed Cell Focus                     |                                                                          |             
      Necrosis                             |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |             +           +        +  +                 +                  |             
      Fat, Necrosis                        |             4           3        3  3                 2                  |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Infiltration Cellular, Lymphocyte    |       1                                                                  |             
      Inflammation, Chronic                |                2                                                         |             
      Arteriole, Infiltration Cellular,    |                                                                          |             
           Lymphocyte                      |                                                                      3  3|             
      Arteriole, Inflammation, Chronic     |                                           2                              |             
      Duct, Ectasia                        |                                                                          |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                      2                                                   |             
      Infiltration Cellular, Lymphocyte    |       2                                                                  |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |             2                       2              2                 2   |             
      Inflammation, Chronic                |                                                    2                     |             
      Ulcer                                |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Erosion                              |                   2        3           2                                 |             
      Hyperplasia                          |                         2                                                |             
      Mineralization                       |                                                                          |             
      Ulcer                                |                            1                                             |             
      Glands, Dilatation                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   2                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 0| 7| 7| 7| 6| 7| 3| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 4| 4| 4| 2| 3| 3| 0| 4| 5| 4| 4| 4| 1| 4| 3| 4| 4| 4| 3| 4| 4| 4| 3| 3|             
                                           | 0| 2| 0| 3| 3| 7| 7| 6| 1| 9| 0| 3| 0| 8| 2| 7| 1| 3| 1| 7| 0| 0| 1| 7| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |    +  +  +                    +                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |       +                                                                  |             
      Abscess                              |                                                                          |             
      Dysplasia                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                      2                                                  2|             
      Degeneration                         |                                                    1                     |             
      Inflammation, Chronic                |                                              1                           |             
      Valve, Degeneration                  |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                            1                                             |             
      Capsule, Accessory Adrenal Cortical  |                                                                          |             
          Nodule                           |             X                                                            |             
      Capsule, Hyperplasia                 |    3  2  2  2  2  1  2  2  2  1  1     2  2  1  2  2  1  2  1  1  1  1  2|             
      Capsule, Inflammation, Chronic       |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pigmentation                         |                                        1                                 |             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |             3           1     1        2  1     3  1  1  2     2     3  2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  M  +  +  M  +  +  +  M  M  M  +  +  +  +  +  +  +  +  M  +  +  +|             
      Cyst                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | M  +  +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                            X                                             |             
      Pars Distalis, Hyperplasia           |    2     1     1           1  2  2           3  2  1     3               |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Follicular Cell, Hyperplasia         |    2  1                 3           1        3  1     1  2              1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tissue NOS                              |             +                                                            |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  M  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +|             
      Atrophy                              |                      1                                                   |             
      Hyperplasia, Squamous                |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                         4|             
      Angiectasis                          |                      2                                                   |             
      Cyst                                 |                         X                                                |             
      Hemorrhage                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   3                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 0| 7| 7| 7| 6| 7| 3| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 4| 4| 4| 2| 3| 3| 0| 4| 5| 4| 4| 4| 1| 4| 3| 4| 4| 4| 3| 4| 4| 4| 3| 3|             
                                           | 0| 2| 0| 3| 3| 7| 7| 6| 1| 9| 0| 3| 0| 8| 2| 7| 1| 3| 1| 7| 0| 0| 1| 7| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Pigmentation                         |                                                                          |             
      Periovarian Tissue, Cyst             |                                  X  X                                    |             
      Periovarian Tissue, Necrosis         |                                                                          |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |       3                                         3           3            |             
      Inflammation, Acute                  |                                                                         2|             
      Endometrium, Atrophy                 |                                                                          |             
      Endometrium, Hyperplasia, Cystic     |    2  1     2  2     1  3  2  2  2  2  1  3  3  1  3  2  2     2  2  2  2|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        |    1           1        1     2  2  1  2  1     1  2  2     2  1  1  1  1|             
      Proliferation                        |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node                              |          +     +                 +                                       |             
      Lumbar, Cyst                         |                                  X                                       |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                                                                          |             
      Hyperplasia, Lymphoid                |       2                       1                 2        2               |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                        2                                 |             
      Hyperplasia, Lymphoid                |                                                 2                        |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Lymphoid Follicle, Atrophy           | 2                 2  2     2           2                                 |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |       3                       2  2        2  1  2  2  1  1  1  2  2  2  2|             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    2  2  2  3  2     3  2  2  3  1  2     2  3  2  2  2  2  2  2  2  2  3|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |                                                                          |             
      Hyperplasia, Lymphoid                |       2                                                                  |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                            3                                             |             
      Inflammation, Chronic                |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   4                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 0| 7| 7| 7| 6| 7| 3| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 4| 4| 4| 2| 3| 3| 0| 4| 5| 4| 4| 4| 1| 4| 3| 4| 4| 4| 3| 4| 4| 4| 3| 3|             
                                           | 0| 2| 0| 3| 3| 7| 7| 6| 1| 9| 0| 3| 0| 8| 2| 7| 1| 3| 1| 7| 0| 0| 1| 7| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                1                                                         |             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                  1        1                       1      |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |       2                                                                  |             
      Inflammation, Acute                  |                                                                          |             
      Mineralization                       |    1  2  2     2                 1     2  1  1     1  2  1     1  2     2|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                                                          |             
      Perineural, Inflammation, Chronic    |                                                                          |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Meninges, Inflammation, Acute        |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                                           1                              |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
      Bronchiole, Hyperplasia              |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
      Foreign Body                         |                                                                          |             
      Inflammation, Acute                  | 2                                                                        |             
      Inflammation, Chronic                |    1  2     1  2  2     2  2  1  1        1        1        1           1|             
      Inflammation, Chronic Active         |                                                                          |             
      Lumen, Exudate                       | 3                                                                        |             
      Nasolacrimal Duct, Hyperplasia       |                            2                                             |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
      Respiratory Epithelium, Hyperplasia  |                                                                          |             
      Respiratory Epithelium, Metaplasia,  |                                                                          |             
           Squamous                        |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |       +                                                  +               |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |       2                                                                  |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   5                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 0| 7| 7| 7| 6| 7| 3| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 4| 4| 4| 2| 3| 3| 0| 4| 5| 4| 4| 4| 1| 4| 3| 4| 4| 4| 3| 4| 4| 4| 3| 3|             
                                           | 0| 2| 0| 3| 3| 7| 7| 6| 1| 9| 0| 3| 0| 8| 2| 7| 1| 3| 1| 7| 0| 0| 1| 7| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Mineralization                       |       1     1           1  1  1  1  1        1  1     1  1  1  1  1      |             
      Nephropathy                          |       1  1           2  1  1  1  1  1     1     2     1     1     1  2  1|             
      Glomerulus, Amyloid Deposition       |                                        3                                 |             
      Renal Tubule, Degeneration, Hyaline  |                                                                          |             
      Renal Tubule, Necrosis               |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
      Transitional Epithelium, Hyperplasia |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   6                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 9| 4| 1| 3| 4| 4| 3| 4| 4| 4| 7| 3| 4| 4| 4| 4| 8| 3| 4| 3| 3| 3| 4| 4| 3|             
                                           | 5| 0| 0| 7| 2| 1| 7| 2| 1| 1| 7| 7| 2| 3| 0| 1| 6| 2| 0| 7| 7| 7| 2| 3| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  A  +  +  +  +  +  +  +  A  +  +  +  M  +  +  M  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                    2                     |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Clear Cell Focus                     |                                                                          |             
      Eosinophilic Focus                   |                                              X                    X      |             
      Fatty Change                         |    1                 2           1              1  1     1  1        2   |             
      Hematopoietic Cell Proliferation     | 1                                1  1                                    |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Acute                  |          1                                                               |             
      Inflammation, Chronic                |                                                                          |             
      Mixed Cell Focus                     |                   X                       X                              |             
      Necrosis                             | 1                                                                 1      |             
                                            __________________________________________________________________________|             
   Mesentery                               |             +                       +  +                          +      |             
      Fat, Necrosis                        |             3                          3                          4      |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              | 1                                                                        |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                | 2                                                     2           2      |             
      Arteriole, Infiltration Cellular,    |                                                                          |             
           Lymphocyte                      |                                                                          |             
      Arteriole, Inflammation, Chronic     |                                                                          |             
      Duct, Ectasia                        |                                                                   4      |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                                                       +                  |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                    2                     |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |             1                          1           1        2     2     4|             
      Inflammation, Chronic                |                                                                          |             
      Ulcer                                |                                                                   2      |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Erosion                              |                                                                          |             
      Hyperplasia                          |          2                                                              2|             
      Mineralization                       |          1                                                               |             
      Ulcer                                |                                                                          |             
      Glands, Dilatation                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   7                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 9| 4| 1| 3| 4| 4| 3| 4| 4| 4| 7| 3| 4| 4| 4| 4| 8| 3| 4| 3| 3| 3| 4| 4| 3|             
                                           | 5| 0| 0| 7| 2| 1| 7| 2| 1| 1| 7| 7| 2| 3| 0| 1| 6| 2| 0| 7| 7| 7| 2| 3| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |                                              +        +                  |             
      Abscess                              |                                                       3                  |             
      Dysplasia                            |                                              1        2                  |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |       2           2  1                    1                              |             
      Degeneration                         |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Valve, Degeneration                  | 1                                                                        |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
      Capsule, Accessory Adrenal Cortical  |                                                                          |             
          Nodule                           |             X                                                            |             
      Capsule, Hyperplasia                 | 2  1  1  2  2  2  2  2  1  3     2  2  2  1  1  1  2  1  2  2  1  1  1  1|             
      Capsule, Inflammation, Chronic       | 2                                                                        |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pigmentation                         |                                                                          |             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                   2  1     1     2  2  2  1  2           2  2     2  1   |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  M  M  M  +  +  +  +  M  +  +  M  +  +|             
      Cyst                                 |                            X                                             |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  M  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                            X                                            X|             
      Pars Distalis, Hyperplasia           |    2           1     3     3     2     3  2  3  1  3     1               |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Follicular Cell, Hyperplasia         |          1     1  1  2  2        2  1     1     1        2  2  1     1  1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tissue NOS                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Hyperplasia, Squamous                |                                                                         2|             
      Inflammation, Chronic                | 1                                                                       2|             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              | 4                                                                        |             
      Angiectasis                          |                                                                1         |             
      Cyst                                 |                X           X                                             |             
      Hemorrhage                           |                            2                                             |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   8                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 9| 4| 1| 3| 4| 4| 3| 4| 4| 4| 7| 3| 4| 4| 4| 4| 8| 3| 4| 3| 3| 3| 4| 4| 3|             
                                           | 5| 0| 0| 7| 2| 1| 7| 2| 1| 1| 7| 7| 2| 3| 0| 1| 6| 2| 0| 7| 7| 7| 2| 3| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |       2                                                                  |             
      Infiltration Cellular, Lymphocyte    |                                                 2                        |             
      Inflammation, Chronic                |                                                    1                     |             
      Pigmentation                         |                                  2                                       |             
      Periovarian Tissue, Cyst             |                                              X                           |             
      Periovarian Tissue, Necrosis         |                   2                                                      |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                   3                 4     3           4                 4|             
      Inflammation, Acute                  |                            4                                             |             
      Endometrium, Atrophy                 |                                                                         4|             
      Endometrium, Hyperplasia, Cystic     | 2  2     3  2  1  1  3  4  2  2  2     1  2  3  3  2  3  3  3  4  2  2  2|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        |    1  1  2  1  1     1           1  2  1        1     1  1     1     1   |             
      Proliferation                        |                            3                                            2|             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                     +                                   +|             
      Lumbar, Cyst                         |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  M  M  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                                                    1                     |             
      Hyperplasia, Lymphoid                |                                     2           3                        |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  M  +  +  +  A  +  +  M  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Hyperplasia, Lymphoid                |                                     2                                1   |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |       3                                                                  |             
      Lymphoid Follicle, Atrophy           | 3                                                  3                     |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |             1        1  2        2  2  2     1        2     1  1  1      |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    | 3  2  3     2  3  2  2     3     2  2  2  1  3  2  2  3  2  3  2  3  2  3|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |          X        X     X                    X                           |             
      Hyperplasia, Lymphoid                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
      Hyperplasia                          |                   2                                                      |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                | 2                    4                                                   |             
      Inflammation, Chronic Active         |                                                                         3|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page   9                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 9| 4| 1| 3| 4| 4| 3| 4| 4| 4| 7| 3| 4| 4| 4| 4| 8| 3| 4| 3| 3| 3| 4| 4| 3|             
                                           | 5| 0| 0| 7| 2| 1| 7| 2| 1| 1| 7| 7| 2| 3| 0| 1| 6| 2| 0| 7| 7| 7| 2| 3| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         | 1                                   1                                    |             
      Infiltration Cellular, Lymphocyte    |       1                 1  1        2                                    |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Acute                  | 2                                                                        |             
      Mineralization                       | 1  1  1  1                    1     1           2     1  2  2  2     1  1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                                                          |             
      Perineural, Inflammation, Chronic    | 2                                                                        |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Meninges, Inflammation, Acute        | 3                                                                        |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                                                    1              1      |             
      Infiltration Cellular, Lymphocyte    |                                                                2         |             
      Inflammation, Chronic                |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
      Bronchiole, Hyperplasia              |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Foreign Body                         |                                                                          |             
      Inflammation, Acute                  |          2     1                    2                                    |             
      Inflammation, Chronic                |    1        2                 2                 1  1     1        2     2|             
      Inflammation, Chronic Active         |                                                                          |             
      Lumen, Exudate                       |                                     2                                    |             
      Nasolacrimal Duct, Hyperplasia       |                                                 1                        |             
      Olfactory Epithelium, Hyperplasia    |                                  1                                       |             
      Respiratory Epithelium, Hyperplasia  |                                                                          |             
      Respiratory Epithelium, Metaplasia,  |                                                                          |             
           Squamous                        |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                +                                                         |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                          +               |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  10                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 9| 4| 1| 3| 4| 4| 3| 4| 4| 4| 7| 3| 4| 4| 4| 4| 8| 3| 4| 3| 3| 3| 4| 4| 3|             
                                           | 5| 0| 0| 7| 2| 1| 7| 2| 1| 1| 7| 7| 2| 3| 0| 1| 6| 2| 0| 7| 7| 7| 2| 3| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    0                                      | 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Mineralization                       |          1  1                       1  1  1  1        1  1  1            |             
      Nephropathy                          |    1     1  1  1  1  1     1     1  1  1  1  1        1  1  1     2     1|             
      Glomerulus, Amyloid Deposition       |                                                                          |             
      Renal Tubule, Degeneration, Hyaline  |                                                                          |             
      Renal Tubule, Necrosis               | 2                                                  3                     |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                               2                                          |             
      Transitional Epithelium, Hyperplasia |       2                                                                  |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  11                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 6| 7| 7| 4| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 3| 3| 7| 3| 4| 5| 4| 4| 4|                                            |            |
                                           | 2| 7| 7| 7| 7| 0| 6| 0| 2| 1|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|                                            |      A     |
    0                                      | 4| 4| 4| 4| 5| 5| 5| 5| 5| 5|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | M  +  +  +  +  +  +  M  +  +                                             |  53        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Atrophy                              |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Angiectasis                          |                            1                                             |      1  1.0|
      Clear Cell Focus                     |                                                                          |      1     |
      Eosinophilic Focus                   |                                                                          |      9     |
      Fatty Change                         |                                                                          |     13  1.2|
      Hematopoietic Cell Proliferation     |             2                                                            |      6  1.3|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Inflammation, Acute                  |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Mixed Cell Focus                     |                                                                          |      2     |
      Necrosis                             |                                                                          |      2  1.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |          +           +                                                   |  11        |
      Fat, Necrosis                        |          2                                                               |      9  3.0|
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Atrophy                              |                                                                          |      1  1.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      4  2.0|
      Arteriole, Infiltration Cellular,    |                                                                          |            |
           Lymphocyte                      |                                                                          |      2  3.0|
      Arteriole, Inflammation, Chronic     |                                                                          |      1  2.0|
      Duct, Ectasia                        |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Pharynx                                 |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Atrophy                              |                                                                          |      2  2.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Hyperplasia, Squamous                |       4  3        2  4     2                                             |     15  2.3|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Ulcer                                |       1                                                                  |      2  1.5|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +                                             |  58        |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  12                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 6| 7| 7| 4| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 3| 3| 7| 3| 4| 5| 4| 4| 4|                                            |            |
                                           | 2| 7| 7| 7| 7| 0| 6| 0| 2| 1|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|                                            |      A     |
    0                                      | 4| 4| 4| 4| 5| 5| 5| 5| 5| 5|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Erosion                              |                                                                          |      3  2.3|
      Hyperplasia                          |                                                                          |      3  2.0|
      Mineralization                       |                                                                          |      1  1.0|
      Ulcer                                |                                                                          |      1  1.0|
      Glands, Dilatation                   |          1                                                               |      1  1.0|
                                            __________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   4        |
                                            __________________________________________________________________________|____________|
   Tooth                                   |                                                                          |   3        |
      Abscess                              |                                                                          |      1  3.0|
      Dysplasia                            |                                                                          |      2  1.5|
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Cardiomyopathy                       |                                                                          |      6  1.7|
      Degeneration                         |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Valve, Degeneration                  |                                                                          |      1  1.0|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          |                                                                          |      1  1.0|
      Capsule, Accessory Adrenal Cortical  |                                                                          |            |
          Nodule                           |                         X                                                |      3     |
      Capsule, Hyperplasia                 | 2  1  2  1  2  1  1  2  2  1                                             |     57  1.6|
      Capsule, Inflammation, Chronic       |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Pigmentation                         |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          | 1  3  1        1           1                                             |     29  1.7|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +                                             |  49        |
      Cyst                                 |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +                                             |  55        |
      Pars Distalis, Cyst                  |                                                                          |      3     |
      Pars Distalis, Hyperplasia           |    3  1     2              2                                             |     25  2.0|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Follicular Cell, Hyperplasia         |    2        1  1     2     1                                             |     28  1.5|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Tissue NOS                              |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  13                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 6| 7| 7| 4| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 3| 3| 7| 3| 4| 5| 4| 4| 4|                                            |            |
                                           | 2| 7| 7| 7| 7| 0| 6| 0| 2| 1|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|                                            |      A     |
    0                                      | 4| 4| 4| 4| 5| 5| 5| 5| 5| 5|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Atrophy                              |                                                                          |      1  1.0|
      Hyperplasia, Squamous                |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      2  1.5|
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Abscess                              |                                                                          |      2  4.0|
      Angiectasis                          |                                                                          |      2  1.5|
      Cyst                                 |                                                                          |      3     |
      Hemorrhage                           |    3                                                                     |      2  2.5|
      Hyperplasia                          |                                                                          |      1  2.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Pigmentation                         |                                                                          |      1  2.0|
      Periovarian Tissue, Cyst             |                                                                          |      3     |
      Periovarian Tissue, Necrosis         |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                4           4                                             |     10  3.5|
      Inflammation, Acute                  |                                                                          |      2  3.0|
      Endometrium, Atrophy                 |                                                                          |      1  4.0|
      Endometrium, Hyperplasia, Cystic     | 2  3  2     2  3     1  3  4                                             |     52  2.2|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Myelofibrosis                        |    1        1  1        3  1                                             |     35  1.3|
      Proliferation                        |                                                                          |      2  2.5|
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                      +                                                   |   6        |
      Lumbar, Cyst                         |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +                                             |  56        |
      Hemorrhage                           |                                                                          |      1  1.0|
      Hyperplasia, Lymphoid                |                                                                          |      6  2.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Angiectasis                          |                                                                          |      1  2.0|
      Hyperplasia, Lymphoid                |                                                                          |      3  1.7|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Angiectasis                          |                                                                          |      1  3.0|
      Lymphoid Follicle, Atrophy           |          3        3                                                      |      9  2.4|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |    1  1     1  2           2                                             |     30  1.6|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  14                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 6| 7| 7| 4| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 3| 3| 7| 3| 4| 5| 4| 4| 4|                                            |            |
                                           | 2| 7| 7| 7| 7| 0| 6| 0| 2| 1|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|                                            |      A     |
    0                                      | 4| 4| 4| 4| 5| 5| 5| 5| 5| 5|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    | 2  3  1  3  3  2     3  2  2                                             |     53  2.3|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Cyst                                 |                X        X                                                |      6     |
      Hyperplasia, Lymphoid                |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Inflammation, Acute                  |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      2  3.0|
      Inflammation, Chronic Active         |                                                                          |      1  3.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Inflammation, Chronic                |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Degeneration                         |                   1                                                      |      6  1.0|
      Infiltration Cellular, Lymphocyte    |       1        1        1                                                |      7  1.1|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Mineralization                       |       2     2  1  1        1                                             |     32  1.4|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Degeneration                         |                   1                                                      |      1  1.0|
      Perineural, Inflammation, Chronic    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Meninges, Inflammation, Acute        |                                                                          |      1  3.0|
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hemorrhage                           |                                                                          |      3  1.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Inflammation, Chronic                |             1                                                            |      1  1.0|
      Inflammation, Chronic Active         |                   3                                                      |      1  3.0|
      Bronchiole, Hyperplasia              |             1                                                            |      1  1.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  15                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 6| 7| 7| 4| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 3| 3| 7| 3| 4| 5| 4| 4| 4|                                            |            |
                                           | 2| 7| 7| 7| 7| 0| 6| 0| 2| 1|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|                                            |      A     |
    0                                      | 4| 4| 4| 4| 5| 5| 5| 5| 5| 5|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Foreign Body                         |                   3                                                      |      1  3.0|
      Inflammation, Acute                  |                                                                          |      4  1.8|
      Inflammation, Chronic                | 1     1                 1                                                |     24  1.4|
      Inflammation, Chronic Active         |                   3                                                      |      1  3.0|
      Lumen, Exudate                       |                                                                          |      2  2.5|
      Nasolacrimal Duct, Hyperplasia       |                                                                          |      2  1.5|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      1  1.0|
      Respiratory Epithelium, Hyperplasia  |                   2                                                      |      1  2.0|
      Respiratory Epithelium, Metaplasia,  |                                                                          |            |
           Squamous                        |                   1                                                      |      1  1.0|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Ear                                     |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   3        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Mineralization                       |       1        1        1  1                                             |     27  1.0|
      Nephropathy                          | 2  1     1  2  1     3  1                                                |     39  1.2|
      Glomerulus, Amyloid Deposition       |                                                                          |      1  3.0|
      Renal Tubule, Degeneration, Hyaline  |          2                                                               |      1  2.0|
      Renal Tubule, Necrosis               |                                                                          |      2  2.5|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Dilatation                           |                                                                          |      1  2.0|
      Transitional Epithelium, Hyperplasia |                                                                          |      1  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  16                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 3| 7| 7| 7| 6| 7| 7|             
                             DAY ON TEST   | 3| 3| 9| 4| 4| 4| 4| 4| 9| 0| 4| 6| 4| 4| 3| 4| 4| 4| 9| 4| 4| 4| 8| 1| 4|             
                                           | 7| 7| 4| 2| 0| 1| 2| 3| 9| 6| 2| 1| 2| 0| 7| 3| 1| 2| 2| 1| 2| 3| 1| 4| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    125                                    | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Epithelium, Ulcer, Chronic Active    |                         2                                                |             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Serosa, Inflammation, Chronic        |                                                                   2      |             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dysplasia                            |                                                                      1   |             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Serosa, Inflammation, Chronic        |                                                                   2      |             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                                                                          |             
      Clear Cell Focus                     |                                  X                 X                     |             
      Fatty Change                         | 2                                2                                       |             
      Hematopoietic Cell Proliferation     |                         4                                                |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Mixed Cell Focus                     |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                   +      |             
      Inflammation, Chronic Active         |                                                                   4      |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrosis                             |                                                                      3   |             
      Inflammation, Chronic                |                                                    2              4  3   |             
      Inflammation                         |                                                          1               |             
      Duct, Ectasia                        |                                                    3                     |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                               +                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                | 2           3                 1     1  4     2  2        3        3      |             
      Ulcer                                |             3                          3                 2               |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Tongue                                  |                                              +                           |             
                                            __________________________________________________________________________|             
   Tooth                                   |                                                                          |             
      Dysplasia                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                        1                 1               |             
      Inflammation, Chronic                |                         1                                                |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  17                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 3| 7| 7| 7| 6| 7| 7|             
                             DAY ON TEST   | 3| 3| 9| 4| 4| 4| 4| 4| 9| 0| 4| 6| 4| 4| 3| 4| 4| 4| 9| 4| 4| 4| 8| 1| 4|             
                                           | 7| 7| 4| 2| 0| 1| 2| 3| 9| 6| 2| 1| 2| 0| 7| 3| 1| 2| 2| 1| 2| 3| 1| 4| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    125                                    | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |                                                                         1|             
      Capsule, Accessory Adrenal Cortical  |                                                                          |             
          Nodule                           |                                                                          |             
      Capsule, Hyperplasia                 | 2  1  1  1  2  2  1  1  2  2  2  1  1  1  1  2  2  2  1  2  2  1  2  1  2|             
      Capsule, Inflammation, Chronic       |                         1                                                |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |          1  1  2  2           2  3     1  2     2  1  1  1  1  1     1  2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  M  +  +  +  +  M  +  M  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |                X                                                         |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                                              X                           |             
      Pars Distalis, Hyperplasia           |    1     1        1           1              2     3     2              2|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |             1                                                            |             
      Follicular Cell, Hyperplasia         | 2     1     1  2  1  1  1  2  1  1  2  4  1  2     1        1  1        3|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
      Dilatation                           |                            2                                      1      |             
      Hyperplasia, Squamous                |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +|             
      Abscess                              |                         4                                               4|             
      Cyst                                 |                                                                          |             
      Hemorrhage                           |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Periovarian Tissue, Cyst             |                                                                          |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                              3  4  3                    2|             
      Inflammation, Chronic                |                                                                   4      |             
      Endometrium, Hyperplasia, Cystic     | 3  2  2  2  2  2  1  1  1  1  1  1  2  1  1  2  1  2     2  2  2  2     1|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        | 1  1     1  1  2     1        1  1  2  1     2     1     2  1  2         |             
      Proliferation                        |                         X                                                |             
                                            __________________________________________________________________________|             
   Lymph Node                              |       +                                                                  |             
      Pancreatic, Hyperplasia, Lymphoid    |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Lymphoid                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  18                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 3| 7| 7| 7| 6| 7| 7|             
                             DAY ON TEST   | 3| 3| 9| 4| 4| 4| 4| 4| 9| 0| 4| 6| 4| 4| 3| 4| 4| 4| 9| 4| 4| 4| 8| 1| 4|             
                                           | 7| 7| 4| 2| 0| 1| 2| 3| 9| 6| 2| 1| 2| 0| 7| 3| 1| 2| 2| 1| 2| 3| 1| 4| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    125                                    | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Pigmentation, Hemosiderin            |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                   3                                                      |             
      Fibrosis                             |                                                                      4   |             
      Hyperplasia, Lymphoid                |                                                                          |             
      Inflammation, Chronic                |                                                                   4      |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                                                                      2   |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |             2     2  1        1        1     1     1     2               |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |       3     3  2  2  2  4        3     3     2  2  2     2  2     3  2  2|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  M  +|             
      Cyst                                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrosis                             |                                                                      4   |             
      Infiltration Cellular, Lymphocyte    |                                                          2               |             
      Inflammation, Chronic                |                                                                      4   |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                   2      |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |       2                                                           1      |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       | 1              1  1  1        1     1        1  1  1  1  1  1        1   |             
      Hippocampus, Neuron, Necrosis        |                                                                      2   |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |          1                                                               |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                      1                    1                              |             
      Infiltration Cellular, Lymphocyte    |                            1                                             |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  19                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 3| 7| 7| 7| 6| 7| 7|             
                             DAY ON TEST   | 3| 3| 9| 4| 4| 4| 4| 4| 9| 0| 4| 6| 4| 4| 3| 4| 4| 4| 9| 4| 4| 4| 8| 1| 4|             
                                           | 7| 7| 4| 2| 0| 1| 2| 3| 9| 6| 2| 1| 2| 0| 7| 3| 1| 2| 2| 1| 2| 3| 1| 4| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
    125                                    | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                                                                1         |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |             3                                                  2         |             
      Inflammation, Chronic                |    1           1     1           2     2  3  2  2  1  2  2           2  3|             
      Olfactory Epithelium, Hyperplasia    |                                           2                          2   |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                                           +                              |             
      Middle Ear, Inflammation, Chronic    |                                                                          |             
          Active                           |                                           4                              |             
      Mucosa, Middle Ear, Hyperplasia      |                                           3                              |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Metaplasia, Osseous                  |                                                                          |             
      Mineralization                       |                      1              1        1  1  1                     |             
      Nephropathy                          |                1  1     1     1  1     1     1                 1  2      |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    | 2                                                                        |             
      Inflammation, Chronic                |                                                                   4      |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  20                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 2| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 4| 4| 0| 4| 4| 4| 4| 4| 4| 9| 4| 4| 4| 4| 4| 4| 4| 3| 4| 4| 4| 4|             
                                           | 3| 2| 1| 0| 1| 1| 7| 2| 2| 2| 0| 1| 0| 3| 0| 1| 0| 1| 0| 0| 7| 2| 2| 2| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                             1            |             
      Epithelium, Ulcer, Chronic Active    |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Serosa, Inflammation, Chronic        |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dysplasia                            |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Serosa, Inflammation, Chronic        |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                            X                                            X|             
      Clear Cell Focus                     |          X                                                               |             
      Fatty Change                         |                                                                          |             
      Hematopoietic Cell Proliferation     |                                                                   1      |             
      Infiltration Cellular, Lymphocyte    |                                        2                                 |             
      Mixed Cell Focus                     |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrosis                             |                                                                          |             
      Inflammation, Chronic                |                                                                   1     1|             
      Inflammation                         |                                                                          |             
      Duct, Ectasia                        |                                                                          |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |             3                                                            |             
      Ulcer                                |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |                                                                          |             
      Dysplasia                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  21                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 2| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 4| 4| 0| 4| 4| 4| 4| 4| 4| 9| 4| 4| 4| 4| 4| 4| 4| 3| 4| 4| 4| 4|             
                                           | 3| 2| 1| 0| 1| 1| 7| 2| 2| 2| 0| 1| 0| 3| 0| 1| 0| 1| 0| 0| 7| 2| 2| 2| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |                            1                                             |             
      Capsule, Accessory Adrenal Cortical  |                                                                          |             
          Nodule                           |                                                                          |             
      Capsule, Hyperplasia                 | 1  2  2  2  1  1  1  2  2  2  2  1  2  2  2  2  2  1  2  2  1  2  1  2  2|             
      Capsule, Inflammation, Chronic       |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |    1     1  1        1     1     2     1  3     2        2           2  1|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
      Cyst                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |          2                    3  3                    2           2     1|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |       1                                                                  |             
      Follicular Cell, Hyperplasia         | 2  1  1  2  2  1     2  2  2     2           2  1     2  1  2  1  1  3  1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                2                                                         |             
      Hyperplasia, Squamous                |                      1                                                   |             
      Inflammation, Chronic                |                                  2                                       |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Cyst                                 |                                                                          |             
      Hemorrhage                           |                                                                          |             
      Inflammation, Chronic                |                                           4                              |             
      Periovarian Tissue, Cyst             |                         X                                                |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Endometrium, Hyperplasia, Cystic     | 1  2  2  2  1        1  2  1     3  2  2  2  1  2  1  1  2  2  1  1     1|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        | 1     1  2           1  1  1     1  1     1  1  1  1  1     1  2  1     2|             
      Proliferation                        |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node                              |             +                                                           +|             
      Pancreatic, Hyperplasia, Lymphoid    |                                                                         4|             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Lymphoid                |          3              3                                                |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  22                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 2| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 4| 4| 0| 4| 4| 4| 4| 4| 4| 9| 4| 4| 4| 4| 4| 4| 4| 3| 4| 4| 4| 4|             
                                           | 3| 2| 1| 0| 1| 1| 7| 2| 2| 2| 0| 1| 0| 3| 0| 1| 0| 1| 0| 0| 7| 2| 2| 2| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Inflammation, Chronic                |                                                             2            |             
      Pigmentation, Hemosiderin            |          2                                                               |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                      2   |             
      Fibrosis                             |                                                                          |             
      Hyperplasia, Lymphoid                |                                        3                                 |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                                                                          |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |       1              2  1           3  4              1  1              2|             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    | 2  2  2     2           1     2     3  1  2           2  2     2  1  2  2|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |                         X                                X     X  X  X   |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrosis                             |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                             1            |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |       1           1     1  1        1  1  1  1  1        1        1      |             
      Hippocampus, Neuron, Necrosis        |                                                                          |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |    1                                   1  1                       1  1   |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Acute                  |                               2                                          |             
      Inflammation, Chronic                |                                     1                                    |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  23                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 2| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 4| 4| 0| 4| 4| 4| 4| 4| 4| 9| 4| 4| 4| 4| 4| 4| 4| 3| 4| 4| 4| 4|             
                                           | 3| 2| 1| 0| 1| 1| 7| 2| 2| 2| 0| 1| 0| 3| 0| 1| 0| 1| 0| 0| 7| 2| 2| 2| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  | 3                       2                             2                  |             
      Inflammation, Chronic                |                                                    2           1        1|             
      Olfactory Epithelium, Hyperplasia    | 3                                                                        |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                                                                          |             
      Middle Ear, Inflammation, Chronic    |                                                                          |             
          Active                           |                                                                          |             
      Mucosa, Middle Ear, Hyperplasia      |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |    +                                                                     |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Metaplasia, Osseous                  |                                                                   1      |             
      Mineralization                       | 1     1     1           1        1                 1              1     1|             
      Nephropathy                          |    1                    1  1     1                 1           1  1  1  1|             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |    1                                   2                                 |             
      Inflammation, Chronic                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  24                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 4| 4| 3| 3| 3| 4| 4| 4|                                            |            |
                                           | 1| 0| 2| 1| 7| 7| 7| 1| 0| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Epithelium, Ulcer, Chronic Active    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Serosa, Inflammation, Chronic        |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dysplasia                            |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Serosa, Inflammation, Chronic        |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Basophilic Focus                     |                                                                          |      2     |
      Clear Cell Focus                     |                                                                          |      3     |
      Fatty Change                         |                   1                                                      |      3  1.7|
      Hematopoietic Cell Proliferation     |                                                                          |      2  2.5|
      Infiltration Cellular, Lymphocyte    |          1                                                               |      2  1.5|
      Mixed Cell Focus                     |          X                                                               |      1     |
                                            __________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
      Inflammation, Chronic Active         |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Fibrosis                             |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      5  2.2|
      Inflammation                         |                                                                          |      1  1.0|
      Duct, Ectasia                        |          1                                                               |      2  2.0|
                                            __________________________________________________________________________|____________|
   Pharynx                                 |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia, Squamous                | 3                                                                        |     11  2.5|
      Ulcer                                | 2                                                                        |      4  2.5|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Tooth                                   |          +                                                               |   1        |
      Dysplasia                            |          2                                                               |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  25                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 4| 4| 3| 3| 3| 4| 4| 4|                                            |            |
                                           | 1| 0| 2| 1| 7| 7| 7| 1| 0| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
      Cardiomyopathy                       | 1                       2                                                |      4  1.3|
      Inflammation, Chronic                |                                                                          |      1  1.0|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia                          |                                                                          |      2  1.0|
      Capsule, Accessory Adrenal Cortical  |                                                                          |            |
          Nodule                           |    X                 X                                                   |      2     |
      Capsule, Hyperplasia                 | 2  2  1  2  1  3  2  1  2  1                                             |     60  1.6|
      Capsule, Inflammation, Chronic       |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia                          |          1     1  1  2     3                                             |     33  1.5|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  +  +  +  +  +  +  +                                             |  54        |
      Cyst                                 |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Pars Distalis, Cyst                  |                            X                                             |      2     |
      Pars Distalis, Hyperplasia           | 1        1     1  2        1                                             |     19  1.7|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |          1                                                               |      3  1.0|
      Follicular Cell, Hyperplasia         | 4  2  1  1  1  2  1  4  2                                                |     46  1.7|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Dilatation                           |                                                                          |      3  1.7|
      Hyperplasia, Squamous                |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Abscess                              |                                                                          |      2  4.0|
      Cyst                                 |                X                                                         |      1     |
      Hemorrhage                           |                2                                                         |      1  2.0|
      Inflammation, Chronic                |                            2                                             |      2  3.0|
      Periovarian Tissue, Cyst             |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                                                                          |      4  3.0|
      Inflammation, Chronic                |                                                                          |      1  4.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  26                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 4| 4| 3| 3| 3| 4| 4| 4|                                            |            |
                                           | 1| 0| 2| 1| 7| 7| 7| 1| 0| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Endometrium, Hyperplasia, Cystic     | 1  1  1  1  1  2  2  2     2                                             |     53  1.6|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Myelofibrosis                        | 1        1  1  1  1  2  2  2                                             |     40  1.3|
      Proliferation                        |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   3        |
      Pancreatic, Hyperplasia, Lymphoid    |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia, Lymphoid                |                                                                          |      2  3.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Pigmentation, Hemosiderin            |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Angiectasis                          |                                                                          |      2  2.5|
      Fibrosis                             |                                                                          |      1  4.0|
      Hyperplasia, Lymphoid                |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Lymphoid Follicle, Atrophy           |                                                                          |      1  2.0|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |          1     1                                                         |     18  1.6|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    |       2     3     1  2  3  1                                             |     37  2.1|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Cyst                                 | X  X           X  X                                                      |      9     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Fibrosis                             |                                                                          |      1  4.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Abscess                              |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Degeneration                         |                         1                                                |      3  1.3|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  27                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 4| 4| 3| 3| 3| 4| 4| 4|                                            |            |
                                           | 1| 0| 2| 1| 7| 7| 7| 1| 0| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Mineralization                       |       1              1     1                                             |     27  1.0|
      Hippocampus, Neuron, Necrosis        |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hemorrhage                           |          1                                                               |      8  1.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Alveolus, Infiltration Cellular,     |                                                                          |            |
           Histiocyte                      |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Inflammation, Acute                  |                                                                          |      5  2.4|
      Inflammation, Chronic                |    1  1     1     1     1  1                                             |     22  1.5|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      3  2.3|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Ear                                     |                                                                          |   1        |
      Middle Ear, Inflammation, Chronic    |                                                                          |            |
          Active                           |                                                                          |      1  4.0|
      Mucosa, Middle Ear, Hyperplasia      |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Metaplasia, Osseous                  |                                                                          |      1  1.0|
      Mineralization                       |          1  1        1     1                                             |     17  1.0|
      Nephropathy                          |          1  1     1     1                                                |     22  1.0|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      3  1.7|
      Inflammation, Chronic                |                                                                          |      1  4.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  28                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 7| 7| 7| 6| 7| 6| 7| 7| 3| 7| 5| 2| 7| 7|             
                             DAY ON TEST   | 4| 4| 9| 4| 4| 4| 4| 0| 4| 3| 0| 4| 3| 3| 7| 3| 5| 4| 4| 7| 4| 4| 6| 4| 4|             
                                           | 3| 2| 4| 1| 2| 1| 0| 9| 3| 5| 5| 2| 2| 7| 0| 7| 1| 0| 2| 4| 2| 8| 0| 3| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  A  M  +  +  M  M  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  A  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  A  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  A  +  A  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Basophilic Focus                     |                X                                                         |             
      Eosinophilic Focus                   |                         X                                                |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Infarct                              |                                                                          |             
      Mixed Cell Focus                     |                                                                          |             
      Central Vein, Dilatation             |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
      Fat, Necrosis                        |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                  1                                       |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Hyperkeratosis                       |                                                                          |             
      Hyperplasia, Squamous                |                                  2     1                                 |             
      Inflammation, Chronic                |                                                                          |             
      Ulcer                                |                                  3                                       |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Erosion                              |                                                 2                        |             
      Mineralization                       |                                        1     1                           |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                  2                                       |             
      Atrium, Thrombosis                   |                                                                          |             
      Valve, Bacterium                     |                                                          3     4         |             
      Valve, Inflammation, Chronic         |                                                          3     4         |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
      Capsule, Hyperplasia                 | 1  1  2  2  2  2  2  1  1  1     2  1  2  2  1  1  1  1  1  1  2  1  2  2|             
      Zona Reticularis, Hemorrhage         |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  29                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 7| 7| 7| 6| 7| 6| 7| 7| 3| 7| 5| 2| 7| 7|             
                             DAY ON TEST   | 4| 4| 9| 4| 4| 4| 4| 0| 4| 3| 0| 4| 3| 3| 7| 3| 5| 4| 4| 7| 4| 4| 6| 4| 4|             
                                           | 3| 2| 4| 1| 2| 1| 0| 9| 3| 5| 5| 2| 2| 7| 0| 7| 1| 0| 2| 4| 2| 8| 0| 3| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |             2     1  1                       1  1        1           2   |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  +  +  +  +  M  +  M  +  +  +  +  +  +  M  M  +  +  M  +  M|             
      Cyst                                 |          X                                                               |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |       2     1                                3                           |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                        2                                 |             
      Follicular Cell, Hyperplasia         | 1     1  1  2  2  2              1  1  1           2  1     2        2  1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                            1                                             |             
      Cyst                                 |                                                                          |             
      Inflammation, Acute                  |                                                    2                     |             
      Periovarian Tissue, Cyst             |                      X                                                   |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |    3                                               3                     |             
      Endometrium, Hyperplasia, Cystic     | 1  2  1  2  1  1  2  1  1  1     2     1  2  2     1  1  1  2  1     2  1|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Blood                                   |                         A                                                |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Myelofibrosis                        | 1  1        1  1  2  1                 1     2        1                 1|             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  M  +  A  +  A  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                              2                           |             
      Atrophy                              |                                                 2                        |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                               1                 2                        |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         | 3  2  1  4                                   2     2        1  1         |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  30                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 7| 7| 7| 6| 7| 6| 7| 7| 3| 7| 5| 2| 7| 7|             
                             DAY ON TEST   | 4| 4| 9| 4| 4| 4| 4| 0| 4| 3| 0| 4| 3| 3| 7| 3| 5| 4| 4| 7| 4| 4| 6| 4| 4|             
                                           | 3| 2| 4| 1| 2| 1| 0| 9| 3| 5| 5| 2| 2| 7| 0| 7| 1| 0| 2| 4| 2| 8| 0| 3| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
          Proliferation                    |    1  3  1     2  2     2                    3     3     2  1  3         |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  M  +  +  +  +  +  +  +  +  A  +  A  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |    X           X                                      X     X            |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                            1                                             |             
      Infiltration Cellular, Lymphocyte    |                                                    1                     |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  M  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |             1        1  1  1     1                          1  1        1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Congestion                           |                            2                                             |             
      Hemorrhage                           |                   1                                                      |             
      Inflammation, Acute                  |                                                          2               |             
      Inflammation, Chronic                |       2                                                                  |             
      Alveolar Epithelium, Hyperplasia     |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                         1                                   3            |             
      Inflammation, Chronic                |          1  1  2     3     2                 2     2           2     1   |             
      Nasolacrimal Duct, Hyperplasia       |                                                                2         |             
      Olfactory Epithelium, Hyperplasia    |                      2                                                   |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                 +                        |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       | 1                                                  1                     |             
      Nephropathy                          | 1        1     4        2  1     1           3        1        1         |             
      Pelvis, Inflammation, Chronic        |                2                                                         |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                      4                                                   |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  31                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 7| 7| 7| 6| 7| 6| 7| 7| 3| 7| 5| 2| 7| 7|             
                             DAY ON TEST   | 4| 4| 9| 4| 4| 4| 4| 0| 4| 3| 0| 4| 3| 3| 7| 3| 5| 4| 4| 7| 4| 4| 6| 4| 4|             
                                           | 3| 2| 4| 1| 2| 1| 0| 9| 3| 5| 5| 2| 2| 7| 0| 7| 1| 0| 2| 4| 2| 8| 0| 3| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                3                                                         |             
      Transitional Epithelium, Hyperplasia |                2                                                         |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  32                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 2| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 6| 3| 7| 7|             
                             DAY ON TEST   | 4| 4| 5| 4| 4| 4| 4| 3| 4| 4| 3| 4| 4| 3| 3| 4| 4| 4| 4| 4| 4| 7| 0| 4| 3|             
                                           | 0| 1| 5| 1| 2| 4| 0| 7| 2| 3| 7| 2| 0| 7| 7| 0| 1| 3| 2| 3| 1| 4| 8| 0| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                2         |             
      Basophilic Focus                     |                                                                          |             
      Eosinophilic Focus                   |                                                                          |             
      Hematopoietic Cell Proliferation     |                                           2                    2         |             
      Infarct                              |                                           X                              |             
      Mixed Cell Focus                     |                                                                          |             
      Central Vein, Dilatation             |                               2                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |       +                                                                  |             
      Fat, Necrosis                        |       2                                                                  |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                           2                       1      |             
                                            __________________________________________________________________________|             
   Pharynx                                 |                                                    +                     |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperkeratosis                       |                                                             1            |             
      Hyperplasia, Squamous                |                               3  3  3  2              1                  |             
      Inflammation, Chronic                |                                        1                                 |             
      Ulcer                                |                               2  1  3                                    |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Erosion                              |                                                                          |             
      Mineralization                       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |             2        2                                                   |             
      Atrium, Thrombosis                   |                                                                X         |             
      Valve, Bacterium                     |                                                                   3      |             
      Valve, Inflammation, Chronic         |                                                                   3      |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                           2                          2   |             
      Capsule, Hyperplasia                 | 1  2  1  2  2  1  2  1  2  2  2  2  1  2  2  2  2  2  2  2  2  1  1  2  2|             
      Zona Reticularis, Hemorrhage         |                                                                3         |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  33                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 2| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 6| 3| 7| 7|             
                             DAY ON TEST   | 4| 4| 5| 4| 4| 4| 4| 3| 4| 4| 3| 4| 4| 3| 3| 4| 4| 4| 4| 4| 4| 7| 0| 4| 3|             
                                           | 0| 1| 5| 1| 2| 4| 0| 7| 2| 3| 7| 2| 0| 7| 7| 0| 1| 3| 2| 3| 1| 4| 8| 0| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Hyperplasia                          |                                                                      2   |             
      Inflammation, Chronic                |                                                                   1      |             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          | 2                 2                    1        1           2        1  2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  M  +  +  +  +  M  +  +  +  +  M  +  +  +  M  +  +|             
      Cyst                                 |                                              X     X                     |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  | X                                                                        |             
      Pars Distalis, Hyperplasia           |                         1              3           1        2  2         |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                                         1|             
      Follicular Cell, Hyperplasia         | 2        2  2  1  1  1  2     1  1  2  1  1  2  2  2        1  2     1  1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +  M  +  +|             
      Abscess                              |                                           4                              |             
      Inflammation, Chronic                |             1                                                            |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Cyst                                 |                         X              X                                 |             
      Inflammation, Acute                  |                                                                          |             
      Periovarian Tissue, Cyst             |                                                                          |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                               2                          2           3   |             
      Endometrium, Hyperplasia, Cystic     | 2  1     1  1  1  2  1  1  1  1  2  2  2     3  1  1  2     2  1  1  1  1|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Blood                                   |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Myelofibrosis                        | 1  1     1        1     1  2  1  1  1  1  1  1     1           2     2  1|             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Atrophy                              |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                                                                          |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |                   1        1  3  1     2           2                 3   |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  34                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 2| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 6| 3| 7| 7|             
                             DAY ON TEST   | 4| 4| 5| 4| 4| 4| 4| 3| 4| 4| 3| 4| 4| 3| 3| 4| 4| 4| 4| 4| 4| 7| 0| 4| 3|             
                                           | 0| 1| 5| 1| 2| 4| 0| 7| 2| 3| 7| 2| 0| 7| 7| 0| 1| 3| 2| 3| 1| 4| 8| 0| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
          Proliferation                    | 2  1           2  2        1     2  2  1  4                    3  3  2   |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |                   X                                                      |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                2        1                                                |             
      Infiltration Cellular, Lymphocyte    |                            1                                             |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |    2     2           1  1     1        1              1  1  1  1     1  1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Congestion                           |                                                                          |             
      Hemorrhage                           |                                                                          |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |                                                                3         |             
      Alveolar Epithelium, Hyperplasia     |                         1                                                |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  | 2           2                       3                                    |             
      Inflammation, Chronic                |    1     2     1           1           1                 1  1           1|             
      Nasolacrimal Duct, Hyperplasia       |                                                                          |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |                                                                      1   |             
      Nephropathy                          |                                     1        1                 3         |             
      Pelvis, Inflammation, Chronic        |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  35                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 2| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 6| 3| 7| 7|             
                             DAY ON TEST   | 4| 4| 5| 4| 4| 4| 4| 3| 4| 4| 3| 4| 4| 3| 3| 4| 4| 4| 4| 4| 4| 7| 0| 4| 3|             
                                           | 0| 1| 5| 1| 2| 4| 0| 7| 2| 3| 7| 2| 0| 7| 7| 0| 1| 3| 2| 3| 1| 4| 8| 0| 7|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Infiltration Cellular, Lymphocyte    | 1                                                                        |             
      Inflammation, Chronic                |                                                                          |             
      Transitional Epithelium, Hyperplasia |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  36                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 4| 4| 4| 4| 4| 3| 4| 4| 4|                                            |            |
                                           | 7| 3| 1| 1| 0| 0| 2| 1| 1| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +                                             |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +                                             |  58        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +                                             |  58        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +                                             |  58        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Atrophy                              |                                                                          |      1  2.0|
      Basophilic Focus                     |                                                                          |      1     |
      Eosinophilic Focus                   |                                                                          |      1     |
      Hematopoietic Cell Proliferation     |                                                                          |      2  2.0|
      Infarct                              |                                                                          |      1     |
      Mixed Cell Focus                     |    X           X                                                         |      2     |
      Central Vein, Dilatation             |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
      Fat, Necrosis                        |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Inflammation, Chronic                |                                                                          |      3  1.3|
                                            __________________________________________________________________________|____________|
   Pharynx                                 |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Hyperkeratosis                       |                                                                          |      1  1.0|
      Hyperplasia, Squamous                | 1              4  2                                                      |     10  2.2|
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Ulcer                                |                2  2                                                      |      6  2.2|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Erosion                              |                                                                          |      1  2.0|
      Mineralization                       |                                                                          |      2  1.0|
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Cardiomyopathy                       |             2  2                                                         |      5  2.0|
      Atrium, Thrombosis                   |                                                                          |      1     |
      Valve, Bacterium                     |                                                                          |      3  3.3|
      Valve, Inflammation, Chronic         |                                                                          |      3  3.3|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  37                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 4| 4| 4| 4| 4| 3| 4| 4| 4|                                            |            |
                                           | 7| 3| 1| 1| 0| 0| 2| 1| 1| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia                          |                                                                          |      2  2.0|
      Capsule, Hyperplasia                 | 2  2  2  2  3  2  1  2  2  2                                             |     59  1.7|
      Zona Reticularis, Hemorrhage         |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia                          |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          |          2  1  3     1     1                                             |     19  1.5|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +                                             |  49        |
      Cyst                                 |          X                                                               |      4     |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Pars Distalis, Cyst                  |                                                                          |      1     |
      Pars Distalis, Hyperplasia           |    1  2                                                                  |     10  1.8|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      2  1.5|
      Follicular Cell, Hyperplasia         | 1  1  1     1        3  1  2                                             |     40  1.5|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +                                             |  56        |
      Abscess                              |                                                                          |      1  4.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Angiectasis                          |                                                                          |      1  1.0|
      Cyst                                 |                                                                          |      2     |
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Periovarian Tissue, Cyst             |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                                                                          |      5  2.6|
      Endometrium, Hyperplasia, Cystic     | 1  1  1  2  2  2     2  1  1                                             |     52  1.4|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Blood                                   |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Angiectasis                          |                3                                                         |      1  3.0|
      Myelofibrosis                        | 1  1  2     1           1                                                |     31  1.2|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  38                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 4| 4| 4| 4| 4| 3| 4| 4| 4|                                            |            |
                                           | 7| 3| 1| 1| 0| 0| 2| 1| 1| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                   +                                                      |   1        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +                                             |  59        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Angiectasis                          |                                                                          |      1  2.0|
      Atrophy                              |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Lymphoid Follicle, Atrophy           |                                                                          |      2  1.5|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         | 2                    2                                                   |     17  1.9|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    | 1           2  1  1  1                                                   |     28  1.9|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +                                             |  56        |
      Cyst                                 |    X                                                                     |      6     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Degeneration                         |                                                                          |      3  1.3|
      Infiltration Cellular, Lymphocyte    |                                                                          |      2  1.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Mineralization                       | 1  1           1  1        1                                             |     25  1.1|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Congestion                           |                                                                          |      1  2.0|
      Hemorrhage                           |                         1                                                |      2  1.0|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      2  2.5|
      Alveolar Epithelium, Hyperplasia     |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Inflammation, Acute                  |                            1                                             |      6  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  39                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 4| 4| 4| 4| 4| 3| 4| 4| 4|                                            |            |
                                           | 7| 3| 1| 1| 0| 0| 2| 1| 1| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|                                            |      A     |
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
      Inflammation, Chronic                |    1                 1                                                   |     19  1.4|
      Nasolacrimal Duct, Hyperplasia       |                                                                          |      1  2.0|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +                                                |  59        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Mineralization                       |                1     1  1                                                |      6  1.0|
      Nephropathy                          | 1           1           1                                                |     15  1.5|
      Pelvis, Inflammation, Chronic        |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                                                                          |      1  4.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      1  3.0|
      Transitional Epithelium, Hyperplasia |                                                                          |      1  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  40                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 6| 4| 5| 2| 7| 7| 2| 7| 6| 7| 7| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7|             
                             DAY ON TEST   | 4| 4| 0| 4| 7| 9| 6| 1| 4| 3| 1| 3| 4| 4| 4| 4| 7| 4| 4| 3| 4| 3| 9| 4| 4|             
                                           | 3| 0| 1| 1| 2| 5| 7| 0| 0| 7| 5| 7| 2| 3| 0| 2| 4| 1| 0| 7| 1| 7| 8| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    500                                    | 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Perforation                          |                                                                          |             
      Periesophageal Tissue, Inflammation, |                                                                          |             
           Subacute                        |                                                                          |             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +  A  +  A  +  +  +  A  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                            X                                             |             
      Congestion                           |                                                                          |             
      Eosinophilic Focus                   |          X                                                               |             
      Fatty Change                         |                                                                          |             
      Hematopoietic Cell Proliferation     |                         1                                         1      |             
      Inflammation, Acute                  |                                     2                                    |             
      Necrosis                             |                                                                          |             
      Bile Duct, Hyperplasia               |                                                                          |             
      Centrilobular, Fibrosis              |                                                          1               |             
                                            __________________________________________________________________________|             
   Mesentery                               |       +                                                                  |             
      Inflammation, Chronic                |       3                                                                  |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |       2                                                                  |             
      Duct, Ectasia                        |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |                                           1                              |             
      Ulcer                                |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dysplasia                            |                                                                          |             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |                                     +     +                              |             
      Abscess                              |                                     3                                    |             
      Dysplasia                            |                                           1                              |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Epicardium, Inflammation, Acute      |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  41                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 6| 4| 5| 2| 7| 7| 2| 7| 6| 7| 7| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7|             
                             DAY ON TEST   | 4| 4| 0| 4| 7| 9| 6| 1| 4| 3| 1| 3| 4| 4| 4| 4| 7| 4| 4| 3| 4| 3| 9| 4| 4|             
                                           | 3| 0| 1| 1| 2| 5| 7| 0| 0| 7| 5| 7| 2| 3| 0| 2| 4| 1| 0| 7| 1| 7| 8| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    500                                    | 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
      Capsule, Hyperplasia                 | 1  3     1     1  1  1  1  2  1  2  1  2  2  1  1  2  1  1  1  2  1  2  1|             
      Zona Reticularis, Necrosis           |                                     3                                    |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                     1           1           2     1      |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  M  +  +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Hyperplasia           |                                        3                                 |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular,               |                                                                          |             
          Polymorphonuclear                |             1                                                            |             
      Inflammation, Chronic                |                                                                          |             
      Follicular Cell, Hyperplasia         | 1     1  2  1              1     1     1     1     1  2     1  1     2  1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Inflammation, Chronic                |             1                                                            |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |       3                                                                  |             
      Cyst                                 | X                       X              X                                 |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |       3                                                                  |             
      Periovarian Tissue, Cyst             |                                                                X         |             
      Periovarian Tissue, Inflammation,    |                                                                          |             
           Chronic                         |                                                                          |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |       4                                                     2        3   |             
      Endometrium, Hyperplasia, Cystic     |    1     1        1        1     1     2  1  1     1  1  1     1     1  1|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        | 1  1        1           1  2     1     3     1           1        1     1|             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
      Bronchial, Amyloid Deposition        |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  M  +  +  +  +  +  M  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Congestion                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  42                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 6| 4| 5| 2| 7| 7| 2| 7| 6| 7| 7| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7|             
                             DAY ON TEST   | 4| 4| 0| 4| 7| 9| 6| 1| 4| 3| 1| 3| 4| 4| 4| 4| 7| 4| 4| 3| 4| 3| 9| 4| 4|             
                                           | 3| 0| 1| 1| 2| 5| 7| 0| 0| 7| 5| 7| 2| 3| 0| 2| 4| 1| 0| 7| 1| 7| 8| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    500                                    | 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Hyperplasia, Lymphoid                |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                          2               |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                2  2                             2                        |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |          3                 1                                             |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |                                           2           2     3        1   |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +|             
      Abscess                              |                                                                          |             
      Cyst                                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                   1                 1                                    |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |    1  1        1  1              1     1  1        1                 1   |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    | 1                                                                        |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Hemorrhage                           |             2              2                       2              2      |             
      Inflammation, Acute                  |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                                                       2                  |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |       1           1  1  1           3  1  1           1              1   |             
      Olfactory Epithelium, Hyperplasia    |                                     2                                    |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  43                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 6| 4| 5| 2| 7| 7| 2| 7| 6| 7| 7| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7|             
                             DAY ON TEST   | 4| 4| 0| 4| 7| 9| 6| 1| 4| 3| 1| 3| 4| 4| 4| 4| 7| 4| 4| 3| 4| 3| 9| 4| 4|             
                                           | 3| 0| 1| 1| 2| 5| 7| 0| 0| 7| 5| 7| 2| 3| 0| 2| 4| 1| 0| 7| 1| 7| 8| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    500                                    | 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                          +               |             
      Cornea, Inflammation, Chronic        |                                                          2               |             
      Lens, Cataract                       |                                                          3               |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                          +               |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
      Mineralization                       |             1                       1                                    |             
      Nephropathy                          | 1  1     1  1              1     1  1     1  1     1  1        1     1  2|             
      Pelvis, Inflammation, Chronic        |                                                                          |             
      Renal Tubule, Bacterium              |                                                                          |             
      Renal Tubule, Necrosis               |                3                                                         |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
      Infiltration Cellular, Lymphocyte    |          3                                                               |             
      Inflammation, Chronic                | 3                                                                        |             
      Transitional Epithelium, Hyperplasia | 2                                                                        |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  44                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 3| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7| 7| 7| 7| 7| 7| 0| 7| 7| 0| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 9| 3| 4| 3| 4| 4| 4| 4| 2| 4| 4| 4| 4| 4| 2| 4| 0| 4| 2| 8| 3| 4|             
                                           | 0| 2| 3| 8| 7| 5| 7| 1| 3| 2| 2| 7| 2| 0| 0| 0| 0| 7| 2| 5| 1| 7| 4| 7| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|             
    500                                    | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Perforation                          |                                                                   X      |             
      Periesophageal Tissue, Inflammation, |                                                                          |             
           Subacute                        |                                                                   3      |             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  A  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  A  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  A  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                                                                          |             
      Congestion                           |                                                          3               |             
      Eosinophilic Focus                   |                                                                          |             
      Fatty Change                         |                                                                1         |             
      Hematopoietic Cell Proliferation     |                                  3                                       |             
      Inflammation, Acute                  |                                                                          |             
      Necrosis                             |                                                                          |             
      Bile Duct, Hyperplasia               |                                                                1         |             
      Centrilobular, Fibrosis              |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                            +                                             |             
      Inflammation, Chronic                |                            3                                             |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
      Inflammation, Chronic                |          2                 3                                             |             
      Duct, Ectasia                        |                            1                                            3|             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                    2                     |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Hyperplasia, Squamous                |                         1     2                             2  3     2   |             
      Ulcer                                |                               2                             1  3         |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Dysplasia                            |                                                                          |             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |                                                                          |             
      Abscess                              |                                                                          |             
      Dysplasia                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                      2                                                   |             
      Inflammation, Chronic                |                         2                                                |             
      Epicardium, Inflammation, Acute      |                                  2                                       |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  45                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 3| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7| 7| 7| 7| 7| 7| 0| 7| 7| 0| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 9| 3| 4| 3| 4| 4| 4| 4| 2| 4| 4| 4| 4| 4| 2| 4| 0| 4| 2| 8| 3| 4|             
                                           | 0| 2| 3| 8| 7| 5| 7| 1| 3| 2| 2| 7| 2| 0| 0| 0| 0| 7| 2| 5| 1| 7| 4| 7| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|             
    500                                    | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
      Capsule, Hyperplasia                 | 2  2  2  1  1  1  2  2  2  1  2  1  1  1  1  2  1  1  1     2  2  1  1  2|             
      Zona Reticularis, Necrosis           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Hyperplasia                          |                   1                                            1         |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  M  +  M  +  M  +  +  +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  I  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Hyperplasia           |       1     2     3                             2              1        3|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular,               |                                                                          |             
          Polymorphonuclear                |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Follicular Cell, Hyperplasia         |       1     3     1  2  1  2           2        1     1     1           1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  M  +  +  +  M  +  +  +  +  M  +  +  +  M  +  +  +  +|             
      Abscess                              |                            2                                             |             
      Inflammation, Chronic                |                                                    1  2                  |             
                                            __________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Cyst                                 |    X        X                                                            |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Periovarian Tissue, Cyst             |                         X                                                |             
      Periovarian Tissue, Inflammation,    |                                                                          |             
           Chronic                         |                            2                                             |             
                                            __________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                            2              1                          4   |             
      Endometrium, Hyperplasia, Cystic     | 1  1  1     1     1  1  1     2        1  1  1  1     1     1  1     2  2|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Myelofibrosis                        | 1     1           2           1           2     1  1  1     2            |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                            +                                   +         |             
      Bronchial, Amyloid Deposition        |                            3                                             |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Congestion                           |                                                          2               |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  46                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 3| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7| 7| 7| 7| 7| 7| 0| 7| 7| 0| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 9| 3| 4| 3| 4| 4| 4| 4| 2| 4| 4| 4| 4| 4| 2| 4| 0| 4| 2| 8| 3| 4|             
                                           | 0| 2| 3| 8| 7| 5| 7| 1| 3| 2| 2| 7| 2| 0| 0| 0| 0| 7| 2| 5| 1| 7| 4| 7| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|             
    500                                    | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Hyperplasia, Lymphoid                |                                                          1               |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |          2                                                               |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |    1  2     1              1  1     2  1        1     1     2           2|             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    1        2              2  2  3  1  2  1        3  1     2     2     2|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                  2                                       |             
      Cyst                                 |             X                                X        X              X  X|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                            2                                             |             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |             1     1     1     1     1  1        1  1                 1   |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Infiltration Cellular, Lymphocyte    |                                                 1                        |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                  4                                       |             
      Hemorrhage                           | 1              2                                                        1|             
      Inflammation, Acute                  |                                  4                                       |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                               2                                          |             
      Inflammation, Chronic                |             2           1     2  2  1                 1              1   |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  47                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 3| 7| 1| 7| 7| 7| 7| 7| 1| 7| 7| 7| 7| 7| 7| 7| 0| 7| 7| 0| 7| 7|             
                             DAY ON TEST   | 4| 4| 4| 9| 3| 4| 3| 4| 4| 4| 4| 2| 4| 4| 4| 4| 4| 2| 4| 0| 4| 2| 8| 3| 4|             
                                           | 0| 2| 3| 8| 7| 5| 7| 1| 3| 2| 2| 7| 2| 0| 0| 0| 0| 7| 2| 5| 1| 7| 4| 7| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|             
    500                                    | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Cornea, Inflammation, Chronic        |                                                                          |             
      Lens, Cataract                       |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                2                                                         |             
      Inflammation, Chronic Active         |                                                    4                     |             
      Mineralization                       |                                                             1            |             
      Nephropathy                          | 1  1  1     1     1  1  1  1        1  1  2  1  1     1     2     1  1  1|             
      Pelvis, Inflammation, Chronic        |                                                    2                     |             
      Renal Tubule, Bacterium              |                                                    X                     |             
      Renal Tubule, Necrosis               |          2                                                               |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                    3                     |             
      Transitional Epithelium, Hyperplasia |                                                    2                     |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  48                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 3| 7| 7| 6| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 3| 4| 1| 3| 3| 8| 2| 4|                                            |            |
                                           | 0| 2| 7| 3| 3| 7| 7| 2| 2| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|                                            |      A     |
    500                                    | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | M  +  +  +  +  +  +  +  +  +                                             |  59        |
      Perforation                          |                                                                          |      1     |
      Periesophageal Tissue, Inflammation, |                                                                          |            |
           Subacute                        |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  A  +  +  +  +  +                                             |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  A  +  +  +  +  +                                             |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  A  +  +  +  +  +                                             |  55        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  A  +  +  +  +  +                                             |  55        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Basophilic Focus                     |                                                                          |      1     |
      Congestion                           |                                                                          |      1  3.0|
      Eosinophilic Focus                   |                                                                          |      1     |
      Fatty Change                         |                      2                                                   |      2  1.5|
      Hematopoietic Cell Proliferation     |                                                                          |      3  1.7|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Necrosis                             |    1                                                                     |      1  1.0|
      Bile Duct, Hyperplasia               |                                                                          |      1  1.0|
      Centrilobular, Fibrosis              |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |                      +                                                   |   3        |
      Inflammation, Chronic                |                                                                          |      2  3.0|
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  A  +  +  +  +  +                                             |  57        |
      Inflammation, Chronic                |                                                                          |      3  2.3|
      Duct, Ectasia                        |       3                                                                  |      3  2.3|
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Atrophy                              |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Hyperplasia, Squamous                |    2  3                    4                                             |      9  2.2|
      Ulcer                                |    2                                                                     |      4  2.0|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Dysplasia                            |                            1                                             |      1  1.0|
      Hyperplasia                          |                            1                                             |      1  1.0|
                                            __________________________________________________________________________|____________|
   Tongue                                  |                      +                                                   |   1        |
                                            __________________________________________________________________________|____________|
   Tooth                                   |                      +                                                   |   3        |
      Abscess                              |                                                                          |      1  3.0|
      Dysplasia                            |                      1                                                   |      2  1.0|
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  49                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 3| 7| 7| 6| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 3| 4| 1| 3| 3| 8| 2| 4|                                            |            |
                                           | 0| 2| 7| 3| 3| 7| 7| 2| 2| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|                                            |      A     |
    500                                    | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Cardiomyopathy                       |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Epicardium, Inflammation, Acute      |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hyperplasia                          |          1                                                               |      1  1.0|
      Capsule, Hyperplasia                 | 2  1  1  2  1  1  1  2  1  2                                             |     57  1.4|
      Zona Reticularis, Necrosis           |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  A  +  +  +  +  +                                             |  56        |
      Hyperplasia                          | 1                    2     1                                             |      9  1.2|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  M  +  +  M  +  M                                             |  51        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  M  +  +  +  +  +                                             |  57        |
      Pars Distalis, Hyperplasia           |          2                                                               |      8  2.1|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Infiltration Cellular,               |                                                                          |            |
          Polymorphonuclear                |                                                                          |      1  1.0|
      Inflammation, Chronic                |                         2                                                |      1  2.0|
      Follicular Cell, Hyperplasia         | 1  2  1  1     1  1  1  4                                                |     33  1.4|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  M  +  +  +                                             |  54        |
      Abscess                              |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      3  1.3|
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  M  +  +  +  +  +  +  +  +                                             |  59        |
      Abscess                              |                                                                          |      1  3.0|
      Cyst                                 |                            X                                             |      6     |
      Infiltration Cellular, Lymphocyte    |          2                                                               |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  3.0|
      Periovarian Tissue, Cyst             |                                                                          |      2     |
      Periovarian Tissue, Inflammation,    |                                                                          |            |
           Chronic                         |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  50                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 3| 7| 7| 6| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 3| 4| 1| 3| 3| 8| 2| 4|                                            |            |
                                           | 0| 2| 7| 3| 3| 7| 7| 2| 2| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|                                            |      A     |
    500                                    | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Dilatation                           |          3                                                               |      7  2.7|
      Endometrium, Hyperplasia, Cystic     | 1     1  1     1  1  1  1  1                                             |     39  1.1|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Myelofibrosis                        |    2     1        1                                                      |     23  1.3|
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   2        |
      Bronchial, Amyloid Deposition        |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Congestion                           |                                                                          |      1  2.0|
      Hyperplasia, Lymphoid                |          2                                                               |      2  1.5|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  A  +  +  +  M  +                                             |  53        |
      Angiectasis                          |    2                                                                     |      2  2.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Lymphoid Follicle, Atrophy           |                                                                          |      4  2.0|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |    2  2  3     2  1        1                                             |     19  1.6|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    | 3  1  1  1           1     1                                             |     23  1.7|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +                                             |  58        |
      Abscess                              |                                                                          |      1  2.0|
      Cyst                                 |       X  X                 X                                             |      8     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Inflammation, Chronic                |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Degeneration                         |                         1                                                |      3  1.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Mineralization                       |    1  1        1  1  1                                                   |     23  1.0|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Infiltration Cellular, Lymphocyte    |                                                                          |      2  1.0|
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +                                             |  59        |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  51                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7| 7| 3| 7| 7| 6| 7| 7|                                            |            |
                             DAY ON TEST   | 4| 4| 3| 4| 1| 3| 3| 8| 2| 4|                                            |            |
                                           | 0| 2| 7| 3| 3| 7| 7| 2| 2| 2|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5|                                            |      A     |
    500                                    | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|                                            |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 NERVOUS SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Abscess                              |                                                                          |      1  4.0|
      Hemorrhage                           |                1                                                         |      8  1.6|
      Inflammation, Acute                  |                                                                          |      1  4.0|
      Alveolus, Infiltration Cellular,     |                                                                          |            |
           Histiocyte                      |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                |                   2  1                                                   |     18  1.3|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Eye                                     |                                                                          |   1        |
      Cornea, Inflammation, Chronic        |                                                                          |      1  2.0|
      Lens, Cataract                       |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hemorrhage                           |                                                                          |      1  2.0|
      Inflammation, Chronic Active         |                                                                          |      1  4.0|
      Mineralization                       |                                                                          |      3  1.0|
      Nephropathy                          | 1  1  1           2     1  1                                             |     38  1.1|
      Pelvis, Inflammation, Chronic        |                                                                          |      1  2.0|
      Renal Tubule, Bacterium              |                                                                          |      1     |
      Renal Tubule, Necrosis               |                                                                          |      2  2.5|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Dilatation                           |                         4                                                |      1  4.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      2  3.0|
      Transitional Epithelium, Hyperplasia |                                                                          |      2  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  52                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 6| 4| 4| 7| 7| 7| 1| 7| 7| 7| 4| 7| 6| 7| 7| 7| 5| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 7| 6| 6| 3| 0| 3| 4| 3| 3| 3| 6| 3| 7| 3| 3| 3| 5| 2|             
                                           | 4| 5| 4| 5| 5| 4| 0| 8| 3| 1| 0| 5| 4| 6| 1| 5| 0| 3| 6| 2| 0| 5| 6| 4| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  M  M  +  +  A        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +        +  A  +  +  +  +  +     +  +  +  +  +  +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                2                                                         |             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Basophilic Focus                     |                                                                          |             
      Clear Cell Focus                     |                   X           X                             X  X         |             
      Eosinophilic Focus                   | X  X  X  X                    X     X                 X     X            |             
      Fatty Change                         |    1  1  2  2     1  2        1     2                                    |             
      Hematopoietic Cell Proliferation     | 2                                                                 2      |             
      Infarct                              |                                                                          |             
      Necrosis                             |                                                                          |             
      Regeneration                         |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                               +                       +              +   |             
      Fat, Necrosis                        |                               2                       3              3   |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Hyperplasia, Lymphoid                |                                     2                                    |             
      Duct, Hyperplasia                    |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |                      2                 3                 3               |             
      Ulcer                                |                      2                 2                                 |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Erosion                              |                                                                      1  1|             
      Hyperplasia                          |                                                                         2|             
      Mineralization                       |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                          +               |             
      Epithelium, Hyperplasia, Squamous    |                                                          2               |             
                                            __________________________________________________________________________|             
   Tooth                                   |    +        +  +  +  +           +  +     +  +  +     +     +  +         |             
      Abscess                              |                4                                                         |             
      Dysplasia                            |    1        1     4  3           3  4     4  2  2     4     2  1         |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                                                          |             
      Mineralization                       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  53                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 6| 4| 4| 7| 7| 7| 1| 7| 7| 7| 4| 7| 6| 7| 7| 7| 5| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 7| 6| 6| 3| 0| 3| 4| 3| 3| 3| 6| 3| 7| 3| 3| 3| 5| 2|             
                                           | 4| 5| 4| 5| 5| 4| 0| 8| 3| 1| 0| 5| 4| 6| 1| 5| 0| 3| 6| 2| 0| 5| 6| 4| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
      Endothelium, Hyperplasia             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Hyperplasia                          |          1                                                               |             
      Hypertrophy                          | 1                 2                                                      |             
      Capsule, Hyperplasia                 | 3     1  1  2  1  1           1  1  1     2  4  1     2  1  2  1  1  1  1|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  M  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Hyperplasia                          | 4  2     3     4  3  2        2  3  2     4  1  1     4  2  4  4         |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  M  +  +  M  M  +  +        +  +  +  M  +  +  +     +  +  +  +  +  M  +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |    1              1                          2        1                 3|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Follicular Cell, Hyperplasia         |       1  1     1              2                                   1     1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                             4            |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Abscess                              |                                           4                              |             
      Atrophy                              |    3  3  4  2  2  2              4  2  3     2           3     3        2|             
      Dilatation                           |                                  4                                       |             
      Inflammation, Chronic                |          1        1  2        2  1           2        2  1  2     3      |             
      Inflammation, Chronic Active         |    2                                                                     |             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Concretion                           |       2                                                                  |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Dilatation                           | 4                    3                                                   |             
      Fibrosis                             |                                                                          |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                             2            |             
      Degeneration                         |                                                                          |             
      Granuloma Sperm                      |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Mineralization                       |                                                                          |             
      Interstitial Cell, Hyperplasia       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  54                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 6| 4| 4| 7| 7| 7| 1| 7| 7| 7| 4| 7| 6| 7| 7| 7| 5| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 7| 6| 6| 3| 0| 3| 4| 3| 3| 3| 6| 3| 7| 3| 3| 3| 5| 2|             
                                           | 4| 5| 4| 5| 5| 4| 0| 8| 3| 1| 0| 5| 4| 6| 1| 5| 0| 3| 6| 2| 0| 5| 6| 4| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Hyperplasia, Megakaryocyte           |                                                          2               |             
      Proliferation                        |                      X                                            X      |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                        +                                 |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  M  +  +  +  +  +  +        +  +  M  +  +  +  +     M  +  +  +  +  +  +|             
      Hyperplasia, Lymphoid                |                2                                                         |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Angiectasis                          |                                                 2        3               |             
      Atrophy                              |                      3                                               2  2|             
      Congestion                           |                                                                          |             
      Hematopoietic Cell Proliferation     |                                              2                           |             
      Hyperplasia, Lymphoid                |          2                                                               |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Lymphoid Follicle, Atrophy           |                                                                         2|             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         | 2     1        1                    2                 2           2      |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |       2        1  2           3  2  2     1     2        3     2  2  3   |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  M  +  +|             
      Angiectasis                          |                                                                          |             
      Cyst                                 |             X     X                 X           X     X                  |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  M  +  +  +  M  +        +  M  +  +  +  +  +     +  +  +  +  +  M  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                          |             
      Ulcer                                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Degeneration                         |                      3           1                                       |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Mineralization                       |    2  1  2  1  1  1  2           1  1     2              1  1  1  2  1  1|             
      Cerebrum, Neuron, Necrosis           |                                                                          |             
      Thalamus, Neuron, Necrosis           |                                                                          |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +        +  +  M  +  +  +  +     +  +  +  +  +  +  +|             
      Degeneration                         |                                                                         1|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  55                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 6| 4| 4| 7| 7| 7| 1| 7| 7| 7| 4| 7| 6| 7| 7| 7| 5| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 7| 6| 6| 3| 0| 3| 4| 3| 3| 3| 6| 3| 7| 3| 3| 3| 5| 2|             
                                           | 4| 5| 4| 5| 5| 4| 0| 8| 3| 1| 0| 5| 4| 6| 1| 5| 0| 3| 6| 2| 0| 5| 6| 4| 3|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Edema                                | 1                                                                        |             
      Hemorrhage                           |                   1                       1                              |             
      Inflammation, Chronic                |                                                          1               |             
      Alveolar Epithelium, Hyperplasia     |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      | 2                                                                        |             
      Bronchiole, Hyperplasia              |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                | 2  2           3                 2  1                       1     4     3|             
      Lumen, Foreign Body                  | 2                                                                 3      |             
      Nasolacrimal Duct, Hyperplasia       |                                                                         2|             
      Nasolacrimal Duct, Inflammation,     |                                                                          |             
           Chronic                         |                                                                          |             
      Olfactory Epithelium, Hyperplasia    |                2                                            2     2      |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                          +               |             
      Cornea, Fibrosis                     |                                                          3               |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                          +               |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Cyst                                 |          X  X                 X           X     X     X        X  X      |             
      Hematopoietic Cell Proliferation     |                                                                   1      |             
      Metaplasia, Osseous                  |                                                                          |             
      Mineralization                       | 1  1  1  1  1  1  1  1           1  1     1  1  1     1  1  2  1     1   |             
      Nephropathy                          | 2  2  1  2  2  1  2  1        2  1  1     2  1  2     2  2  2  2  2  1  3|             
      Pelvis, Inflammation, Chronic        |                                                 1                        |             
      Renal Tubule, Hyperplasia            |                                                       2                  |             
      Renal Tubule, Pigmentation           |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +        +  +  +  +  +  +  +     +  +  +  +  +  +  +|             
      Dilatation                           |                      2                          4           2            |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  56                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 4| 7| 4| 7| 7| 5| 4| 7| 7| 7| 7| 6| 4| 7| 4| 4| 5| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 6| 3| 6| 3| 3| 9| 6| 3| 3| 3| 3| 7| 6| 3| 6| 6| 8| 3| 3| 6| 3|             
                                           | 0| 0| 5| 1| 1| 1| 3| 0| 0| 1| 1| 5| 1| 1| 4| 8| 1| 0| 1| 3| 5| 0| 1| 1| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +     +     +  +  +     +  +  +  +  A     +        +  +  +     +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                                                          |             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Angiectasis                          |                            2                                             |             
      Basophilic Focus                     |                                  X                                       |             
      Clear Cell Focus                     |                                                    X           X         |             
      Eosinophilic Focus                   | X  X  X  X                          X              X                     |             
      Fatty Change                         | 1                                2  1  1           1           2  1     1|             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Infarct                              |          X                                                     X         |             
      Necrosis                             |                                                    3        3            |             
      Regeneration                         |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                             +            |             
      Fat, Necrosis                        |                                                             2            |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Atrophy                              |                                                             1            |             
      Hyperplasia, Lymphoid                |                                                                          |             
      Duct, Hyperplasia                    |          3                                                               |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Hyperplasia, Squamous                |                         3  2                                             |             
      Ulcer                                |                         1                                                |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Erosion                              |                            1                                             |             
      Hyperplasia                          |                                                                          |             
      Mineralization                       |                            1                                             |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
      Epithelium, Hyperplasia, Squamous    |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   | +  +  +  +     +     +  +        +  +  +  +  +     +        +  +  +     +|             
      Abscess                              |                                  1                                       |             
      Dysplasia                            | 1  2  1  1     2     3  3        2  2  1  1  2     3        2  1  3     2|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Cardiomyopathy                       |          2     2                    1                                    |             
      Mineralization                       |                            1                                             |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  57                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 4| 7| 4| 7| 7| 5| 4| 7| 7| 7| 7| 6| 4| 7| 4| 4| 5| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 6| 3| 6| 3| 3| 9| 6| 3| 3| 3| 3| 7| 6| 3| 6| 6| 8| 3| 3| 6| 3|             
                                           | 0| 0| 5| 1| 1| 1| 3| 0| 0| 1| 1| 5| 1| 1| 4| 8| 1| 0| 1| 3| 5| 0| 1| 1| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
      Endothelium, Hyperplasia             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Hyperplasia                          |                                  1  1              3                     |             
      Hypertrophy                          |       2        1                    1                             1      |             
      Capsule, Hyperplasia                 | 1  2  1  1     1     1  1        1  1     1  1     3        1  1        3|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Hyperplasia                          |    1  1  2     3        3        2  1  2           3        4     1     2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +     M     +  +  +     +  +  +  +  +     +        +  +  +     +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | M  +  +  +     +     +  +  +     M  +  +  +  +     +        +  +  +     +|             
      Pars Distalis, Cyst                  |                X                    X                                    |             
      Pars Distalis, Hyperplasia           |                                        1                                2|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Follicular Cell, Hyperplasia         |                                  1  1     1                             1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Abscess                              |                                                                          |             
      Atrophy                              |    3  2  4     3     3  2  3     2  1  2  3  4              3  4  3     2|             
      Dilatation                           |                                           3  4                           |             
      Inflammation, Chronic                | 4     1  2     1     2  2  1     2  2        1              1  2  1     2|             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Concretion                           |                                     2                                    |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Dilatation                           |                                                                   3      |             
      Fibrosis                             |    3                                                                     |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Degeneration                         |                                        2                                 |             
      Granuloma Sperm                      |                                                                          |             
      Inflammation, Chronic                |                                        2                                 |             
      Mineralization                       |                                        2                                 |             
      Interstitial Cell, Hyperplasia       |                                           2                              |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  58                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 4| 7| 4| 7| 7| 5| 4| 7| 7| 7| 7| 6| 4| 7| 4| 4| 5| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 6| 3| 6| 3| 3| 9| 6| 3| 3| 3| 3| 7| 6| 3| 6| 6| 8| 3| 3| 6| 3|             
                                           | 0| 0| 5| 1| 1| 1| 3| 0| 0| 1| 1| 5| 1| 1| 4| 8| 1| 0| 1| 3| 5| 0| 1| 1| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Hyperplasia, Megakaryocyte           |                                                                          |             
      Proliferation                        |                         2                    2              2            |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                             +            |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +     +     +  +  +     +  +  +  +  +     M        +  +  M     +|             
      Hyperplasia, Lymphoid                |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | M  +  +  +     +     +  +  +     +  +  +  +  +     +        +  M  +     +|             
      Angiectasis                          |                                                                          |             
      Atrophy                              |                                                                          |             
      Congestion                           |                                                                          |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Hyperplasia, Lymphoid                |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Angiectasis                          |                      3                                                   |             
      Lymphoid Follicle, Atrophy           |                                  1           2                           |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         | 2  2                                   1           2                     |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    2     3     2     4  1  3     1  2  2  1  2              3  2         |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +     +     +  +  M     M  +  +  +  +     +        M  +  +     +|             
      Angiectasis                          |                                              3                           |             
      Cyst                                 |    X                 X              X  X           X                    X|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +     +     +  +  +     +  M  +  +  +     +        +  +  M     +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Inflammation, Chronic                |                                                                          |             
      Ulcer                                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Degeneration                         | 1                          1        1        1                           |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Mineralization                       | 2  1                 1  1  1        2  2  1                 2     2      |             
      Cerebrum, Neuron, Necrosis           |                                                                          |             
      Thalamus, Neuron, Necrosis           |                                                                          |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Degeneration                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  59                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 4| 7| 4| 7| 7| 5| 4| 7| 7| 7| 7| 6| 4| 7| 4| 4| 5| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 6| 3| 6| 3| 3| 9| 6| 3| 3| 3| 3| 7| 6| 3| 6| 6| 8| 3| 3| 6| 3|             
                                           | 0| 0| 5| 1| 1| 1| 3| 0| 0| 1| 1| 5| 1| 1| 4| 8| 1| 0| 1| 3| 5| 0| 1| 1| 0|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Edema                                |                                                                          |             
      Hemorrhage                           |                                        1                                 |             
      Inflammation, Chronic                |                                                                          |             
      Alveolar Epithelium, Hyperplasia     |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                4                                                         |             
      Bronchiole, Hyperplasia              |       1                                                                  |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |    1                 1  2              2                                 |             
      Lumen, Foreign Body                  |                                                                          |             
      Nasolacrimal Duct, Hyperplasia       |                                                                          |             
      Nasolacrimal Duct, Inflammation,     |                                                                          |             
           Chronic                         |                                                                          |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Cornea, Fibrosis                     |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Cyst                                 |          X                       X                                       |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Metaplasia, Osseous                  |                                                                          |             
      Mineralization                       | 1  1  1        1        1  1     1  1  1  1        1        1  1  1     1|             
      Nephropathy                          | 1  1  1  3     1     2  1  2     2  1  1  1  3     2        2  1  1     1|             
      Pelvis, Inflammation, Chronic        |                                                                          |             
      Renal Tubule, Hyperplasia            |                                                                          |             
      Renal Tubule, Pigmentation           |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +     +     +  +  +     +  +  +  +  +     +        +  +  +     +|             
      Dilatation                           |                                              4                           |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  60                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 4| 7| 4| 4| 7| 7| 7| 7| 7| 4| 7| 4| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 6| 3| 6| 6| 3| 3| 3| 3| 3| 6| 3| 6| 3| 3| 7| 0| 3| 3| 3| 3| 3| 3| 6| 6| 3|             
                                           | 3| 1| 1| 1| 6| 4| 0| 4| 5| 1| 4| 1| 6| 4| 2| 7| 6| 1| 8| 6| 5| 6| 3| 3| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Gallbladder                             |    +        +  +  +  +  +     +     +  M  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                                                          |             
                                            __________________________________________________________________________|             
   Liver                                   |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Angiectasis                          |                                                                          |             
      Basophilic Focus                     |                                                                X         |             
      Clear Cell Focus                     |             X                                                            |             
      Eosinophilic Focus                   |                      X              X                       X            |             
      Fatty Change                         |             1           2     1                    2                     |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Infarct                              |                                                                          |             
      Necrosis                             |                                                                          |             
      Regeneration                         |                                              3                           |             
                                            __________________________________________________________________________|             
   Mesentery                               |    +                                                  +                  |             
      Fat, Necrosis                        |                                                       3                  |             
                                            __________________________________________________________________________|             
   Pancreas                                |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Atrophy                              |                                                                          |             
      Hyperplasia, Lymphoid                |                                                                          |             
      Duct, Hyperplasia                    |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia, Squamous                |                                           2                              |             
      Ulcer                                |                                           1                              |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Erosion                              |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Mineralization                       |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
      Epithelium, Hyperplasia, Squamous    |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   |             +  +  +  +  +           +  +  +     +  +     +  +  +        +|             
      Abscess                              |                                                                4         |             
      Dysplasia                            |             3  3  4     3           3  4  2     1  3     3  4  4        4|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Cardiomyopathy                       |                         2                       2                        |             
      Mineralization                       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  61                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 4| 7| 4| 4| 7| 7| 7| 7| 7| 4| 7| 4| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 6| 3| 6| 6| 3| 3| 3| 3| 3| 6| 3| 6| 3| 3| 7| 0| 3| 3| 3| 3| 3| 3| 6| 6| 3|             
                                           | 3| 1| 1| 1| 6| 4| 0| 4| 5| 1| 4| 1| 6| 4| 2| 7| 6| 1| 8| 6| 5| 6| 3| 3| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
      Endothelium, Hyperplasia             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia                          |                   2     2              1                 2  1  1        2|             
      Hypertrophy                          |                      1        1                    1           1         |             
      Capsule, Hyperplasia                 |    1        1  2  1  3  1           1  1  1  2  2  1     2     1        2|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia                          |    1                 3        2        4  4  2     2        1           4|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       |    M        +  +  +  +  +     +     M  +  +  +  M  M  +  M  +  +        M|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  M  +  +  +        +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |                                        1                                 |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Follicular Cell, Hyperplasia         |    1           2                                         1               |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                                          |             
      Inflammation, Chronic                |                                     3                                    |             
                                            __________________________________________________________________________|             
   Preputial Gland                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Abscess                              |                                                                          |             
      Atrophy                              |    2        3  3  4  2  4           3  3  3  2  3  2  4     3  2        2|             
      Dilatation                           |                                                                          |             
      Inflammation, Chronic                |                      1  2           1  3  2              4  2  1        2|             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Prostate                                |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Concretion                           |                      3                             2                     |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Dilatation                           |                                           2           3                  |             
      Fibrosis                             |                                                                          |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Degeneration                         |                2                    3                                    |             
      Granuloma Sperm                      |                                     3                                    |             
      Inflammation, Chronic                |                                                                          |             
      Mineralization                       |                                                                          |             
      Interstitial Cell, Hyperplasia       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  62                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 4| 7| 4| 4| 7| 7| 7| 7| 7| 4| 7| 4| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 6| 3| 6| 6| 3| 3| 3| 3| 3| 6| 3| 6| 3| 3| 7| 0| 3| 3| 3| 3| 3| 3| 6| 6| 3|             
                                           | 3| 1| 1| 1| 6| 4| 0| 4| 5| 1| 4| 1| 6| 4| 2| 7| 6| 1| 8| 6| 5| 6| 3| 3| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia, Megakaryocyte           |                                                                          |             
      Proliferation                        |                                           X  1           2               |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                +                                                         |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  |    +        +  +  M  M  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia, Lymphoid                |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  |    +        +  +  +  M  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Angiectasis                          |                   2                 2                          1         |             
      Atrophy                              |                                                                          |             
      Congestion                           |                                                       2                  |             
      Hematopoietic Cell Proliferation     |                                        2  1                              |             
      Hyperplasia, Lymphoid                |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Angiectasis                          |                                                                          |             
      Lymphoid Follicle, Atrophy           |                                                       3                  |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |                                           2     2  1     2  2  1         |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |                2                       3  3              2  2  1         |             
                                            __________________________________________________________________________|             
   Thymus                                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Angiectasis                          |                                                                          |             
      Cyst                                 |                   X  X  X              X        X                       X|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           |    M        +  +  +  M  +     +     +  +  +  +  +  +  +  +  +  +        +|             
                                            __________________________________________________________________________|             
   Skin                                    |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Inflammation, Chronic                |                                        3                                 |             
      Ulcer                                |                                           4                              |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Hyperplasia                          |                                                                         2|             
      Inflammation, Chronic                |                                                       2                  |             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Degeneration                         |                2                          1     2        1               |             
      Infiltration Cellular, Lymphocyte    |                                                 2                        |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Mineralization                       |                2  1  1  1     2     1  1        2  2  1     2  1        1|             
      Cerebrum, Neuron, Necrosis           |                                                       3                  |             
      Thalamus, Neuron, Necrosis           |                                                       3                  |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        |    +        +  +  +  +  +     +     +  M  +  +  +  +  +  +  +  +        +|             
      Degeneration                         |                                                       2                  |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  63                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 4| 7| 4| 4| 7| 7| 7| 7| 7| 4| 7| 4| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 6| 3| 6| 6| 3| 3| 3| 3| 3| 6| 3| 6| 3| 3| 7| 0| 3| 3| 3| 3| 3| 3| 6| 6| 3|             
                                           | 3| 1| 1| 1| 6| 4| 0| 4| 5| 1| 4| 1| 6| 4| 2| 7| 6| 1| 8| 6| 5| 6| 3| 3| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    0                                      | 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Spinal Cord                             |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Edema                                |                                              3                           |             
      Hemorrhage                           |                                                                          |             
      Inflammation, Chronic                |                                                    1                     |             
      Alveolar Epithelium, Hyperplasia     |             1                                                            |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                2                                2        4               |             
      Bronchiole, Hyperplasia              |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Inflammation, Acute                  |                                                          2               |             
      Inflammation, Chronic                |                   1  1  1     1     2     1     2     1  2  1           1|             
      Lumen, Foreign Body                  |                                                                          |             
      Nasolacrimal Duct, Hyperplasia       |                                                                          |             
      Nasolacrimal Duct, Inflammation,     |                                                                          |             
           Chronic                         |                                              2     2                     |             
      Olfactory Epithelium, Hyperplasia    |                                                          2               |             
                                            __________________________________________________________________________|             
   Trachea                                 |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Cornea, Fibrosis                     |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |    +                                                                     |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Cyst                                 |                                                                         X|             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Metaplasia, Osseous                  |             1                                                            |             
      Mineralization                       |    1        1  1  1  1  1     1     1  1  1  1  1  1  1  1  1  1        1|             
      Nephropathy                          |    1        1  2  1  2  2     1     1  1  1  2  2  2  2  2  2  2        1|             
      Pelvis, Inflammation, Chronic        |                                                                          |             
      Renal Tubule, Hyperplasia            |                                                                          |             
      Renal Tubule, Pigmentation           |                                           2                              |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         |    +        +  +  +  +  +     +     +  +  +  +  +  +  +  +  +  +        +|             
      Dilatation                           |                                              2                           |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  64                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 7| 7| 7|                                                           |            |
                             DAY ON TEST   | 6| 3| 3| 3| 3|                                                           |            |
                                           | 3| 0| 4| 1| 6|                                                           |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0|                                                           |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |      T     |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |      A     |
    0                                      | 7| 7| 7| 7| 8|                                                           |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               |    +  +  +  +                                                            |  62        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             |    +  +  +  +                                                            |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  |    +  +  +  +                                                            |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 |    +  +  +  +                                                            |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  |    +  +  +  +                                                            |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               |    +  +  +  +                                                            |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                |    +  +  +  +                                                            |  60        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  |    +  +  +  +                                                            |  60        |
      Lymphoid Tissue, Hyperplasia,        |                                                                          |            |
          Lymphoid                         |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Liver                                   |    +  +  +  +                                                            |  62        |
      Angiectasis                          |                                                                          |      1  2.0|
      Basophilic Focus                     |                                                                          |      2     |
      Clear Cell Focus                     |                                                                          |      7     |
      Eosinophilic Focus                   |             X                                                            |     18     |
      Fatty Change                         |                                                                          |     20  1.4|
      Hematopoietic Cell Proliferation     |                                                                          |      2  2.0|
      Infarct                              |                                                                          |      2     |
      Necrosis                             |                                                                          |      2  3.0|
      Regeneration                         |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |       +                                                                  |   7        |
      Fat, Necrosis                        |       2                                                                  |      6  2.5|
                                            __________________________________________________________________________|____________|
   Pancreas                                |    +  +  +  +                                                            |  62        |
      Atrophy                              |                                                                          |      1  1.0|
      Hyperplasia, Lymphoid                |                                                                          |      1  2.0|
      Duct, Hyperplasia                    |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Salivary Glands                         |    +  +  +  +                                                            |  62        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    |    +  +  +  +                                                            |  62        |
      Hyperplasia, Squamous                |          4                                                               |      7  2.7|
      Ulcer                                |          3                                                               |      5  1.8|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      |    +  +  +  +                                                            |  62        |
      Erosion                              |                                                                          |      3  1.0|
      Hyperplasia                          |                                                                          |      1  2.0|
      Mineralization                       |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   1        |
      Epithelium, Hyperplasia, Squamous    |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Tooth                                   |    +  +  +  +                                                            |  48        |
      Abscess                              |                                                                          |      3  3.0|
      Dysplasia                            |    2  2  2  4                                                            |     46  2.5|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  65                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 7| 7| 7|                                                           |            |
                             DAY ON TEST   | 6| 3| 3| 3| 3|                                                           |            |
                                           | 3| 0| 4| 1| 6|                                                           |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0|                                                           |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |      T     |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |      A     |
    0                                      | 7| 7| 7| 7| 8|                                                           |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   |    +  +  +  +                                                            |  62        |
      Cardiomyopathy                       |             2                                                            |      6  1.8|
      Mineralization                       |                                                                          |      1  1.0|
      Endothelium, Hyperplasia             |    3                                                                     |      1  3.0|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          |    +  +  +  +                                                            |  62        |
      Hyperplasia                          |    1     3  2                                                            |     14  1.6|
      Hypertrophy                          |                                                                          |     10  1.2|
      Capsule, Hyperplasia                 |    2  2     2                                                            |     52  1.5|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         |    +  +  +  +                                                            |  61        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      |    +  +  +  +                                                            |  62        |
      Hyperplasia                          |    2  1  3  4                                                            |     41  2.5|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       |    +  +  +  +                                                            |  50        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         |    +  +  +  +                                                            |  59        |
      Pars Distalis, Cyst                  |                                                                          |      2     |
      Pars Distalis, Hyperplasia           |             1                                                            |      9  1.4|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           |    +  +  +  +                                                            |  62        |
      Follicular Cell, Hyperplasia         |       1  1  1                                                            |     16  1.1|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +                                                            |  80        |
      Granuloma Sperm                      |                                                                          |      1  4.0|
      Inflammation, Chronic                |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Preputial Gland                         |    +  +  +  +                                                            |  62        |
      Abscess                              |                                                                          |      1  4.0|
      Atrophy                              |             3                                                            |     46  2.8|
      Dilatation                           |                                                                          |      3  3.7|
      Inflammation, Chronic                |    2  1     4                                                            |     36  1.8|
      Inflammation, Chronic Active         |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Prostate                                |    +  +  +  +                                                            |  62        |
      Concretion                           |                                                                          |      4  2.3|
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         |    +  +  +  +                                                            |  62        |
      Dilatation                           |    4        3                                                            |      7  3.1|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  66                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 7| 7| 7|                                                           |            |
                             DAY ON TEST   | 6| 3| 3| 3| 3|                                                           |            |
                                           | 3| 0| 4| 1| 6|                                                           |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0|                                                           |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |      T     |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |      A     |
    0                                      | 7| 7| 7| 7| 8|                                                           |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Fibrosis                             |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +                                                            |  80        |
      Atrophy                              |                                                                          |      1  2.0|
      Degeneration                         |                                                                          |      3  2.3|
      Granuloma Sperm                      |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Mineralization                       |                                                                          |      1  2.0|
      Interstitial Cell, Hyperplasia       |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             |    +  +  +  +                                                            |  62        |
      Hyperplasia, Megakaryocyte           |                                                                          |      1  2.0|
      Proliferation                        |                                                                          |      8  1.8|
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   3        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  |    +  +  +  M                                                            |  54        |
      Hyperplasia, Lymphoid                |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  |    +  +  +  +                                                            |  59        |
      Angiectasis                          |                                                                          |      5  2.0|
      Atrophy                              |                                                                          |      3  2.3|
      Congestion                           |                                                                          |      1  2.0|
      Hematopoietic Cell Proliferation     |                                                                          |      3  1.7|
      Hyperplasia, Lymphoid                |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  |    +  +  +  +                                                            |  62        |
      Angiectasis                          |                                                                          |      1  3.0|
      Lymphoid Follicle, Atrophy           |                                                                          |      4  2.0|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |       1                                                                  |     17  1.6|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    |       1  2                                                               |     33  2.1|
                                            __________________________________________________________________________|____________|
   Thymus                                  |    +  +  +  +                                                            |  58        |
      Angiectasis                          |                                                                          |      1  3.0|
      Cyst                                 |                                                                          |     17     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           |    +  M  M  M                                                            |  51        |
                                            __________________________________________________________________________|____________|
   Skin                                    |    +  +  +  +                                                            |  62        |
      Inflammation, Chronic                |                                                                          |      1  3.0|
      Ulcer                                |                                                                          |      1  4.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  67                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 7| 7| 7|                                                           |            |
                             DAY ON TEST   | 6| 3| 3| 3| 3|                                                           |            |
                                           | 3| 0| 4| 1| 6|                                                           |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0|                                                           |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |      T     |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |      A     |
    0                                      | 7| 7| 7| 7| 8|                                                           |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |            |
                                           |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    |    +  +  +  +                                                            |  62        |
      Hyperplasia                          |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         |    +  +  +  +                                                            |  62        |
      Degeneration                         |                                                                          |     10  1.4|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   |    +  +  +  +                                                            |  62        |
      Mineralization                       |       2  2  2                                                            |     42  1.4|
      Cerebrum, Neuron, Necrosis           |                                                                          |      1  3.0|
      Thalamus, Neuron, Necrosis           |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        |    +  +  +  +                                                            |  60        |
      Degeneration                         |                                                                          |      2  1.5|
                                            __________________________________________________________________________|____________|
   Spinal Cord                             |    +  +  +  +                                                            |  62        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    |    +  +  +  +                                                            |  62        |
      Edema                                |                                                                          |      2  2.0|
      Hemorrhage                           |                                                                          |      3  1.0|
      Inflammation, Chronic                |                                                                          |      2  1.0|
      Alveolar Epithelium, Hyperplasia     |                                                                          |      1  1.0|
      Alveolus, Infiltration Cellular,     |                                                                          |            |
           Histiocyte                      |                                                                          |      5  2.8|
      Bronchiole, Hyperplasia              |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Nose                                    |    +  +  +  +                                                            |  62        |
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                |    1     1  1                                                            |     26  1.6|
      Lumen, Foreign Body                  |                                                                          |      2  2.5|
      Nasolacrimal Duct, Hyperplasia       |                                                                          |      1  2.0|
      Nasolacrimal Duct, Inflammation,     |                                                                          |            |
           Chronic                         |                                                                          |      2  2.0|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      4  2.0|
                                            __________________________________________________________________________|____________|
   Trachea                                 |    +  +  +  +                                                            |  62        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Eye                                     |                                                                          |   1        |
      Cornea, Fibrosis                     |                                                                          |      1  3.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  68                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 7| 7| 7|                                                           |            |
                             DAY ON TEST   | 6| 3| 3| 3| 3|                                                           |            |
                                           | 3| 0| 4| 1| 6|                                                           |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0|                                                           |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |      T     |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |      A     |
    0                                      | 7| 7| 7| 7| 8|                                                           |      L     |
    MG/KG                                  | 6| 7| 8| 9| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 SPECIAL SENSES SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   2        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  |    +  +  +  +                                                            |  62        |
      Cyst                                 |             X                                                            |     12     |
      Hematopoietic Cell Proliferation     |                                                                          |      1  1.0|
      Metaplasia, Osseous                  |                                                                          |      1  1.0|
      Mineralization                       |    1  1  1  1                                                            |     55  1.0|
      Nephropathy                          |    1  1  1  2                                                            |     61  1.6|
      Pelvis, Inflammation, Chronic        |                                                                          |      1  1.0|
      Renal Tubule, Hyperplasia            |                                                                          |      1  2.0|
      Renal Tubule, Pigmentation           |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         |    +  +  +  +                                                            |  62        |
      Dilatation                           |             4                                                            |      6  3.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  69                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 9| 3| 2| 3| 3| 3| 3| 3| 3| 6| 3| 3| 3| 9| 3| 3| 3| 3| 3|             
                                           | 0| 1| 5| 0| 4| 6| 1| 0| 5| 4| 0| 5| 6| 4| 5| 6| 0| 1| 6| 8| 5| 6| 1| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  A  +  +  M  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                   X                                            X         |             
      Clear Cell Focus                     |                                                                          |             
      Eosinophilic Focus                   |                                                                          |             
      Fatty Change                         |                1           1     1        1     1                       1|             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Inflammation, Acute                  |                                                          2               |             
      Inflammation, Chronic                |                                     2                                    |             
      Mixed Cell Focus                     |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Duct, Dilatation                     |             4                                                            |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Hyperplasia, Squamous                |       4        3  4     4  2  3           2  2  2  3  4     2  4  4     4|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Ulcer                                |       2           2     2  2              2                    2  2     2|             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +|             
      Erosion                              |                                              2                           |             
      Hyperplasia                          |                                     2                                    |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |             +                                   +                        |             
                                            __________________________________________________________________________|             
   Tooth                                   | +  +  +  +  +  +     +  +     +  +  +  +  +     +     +     +  +     +   |             
      Abscess                              |                                                                          |             
      Dysplasia                            | 1  1  1  1     1     1  1     1  2  2  1  1     1     2     1  2     2   |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                                          2               |             
      Cardiomyopathy                       | 2     1                                   1        2  2              2   |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  70                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 9| 3| 2| 3| 3| 3| 3| 3| 3| 6| 3| 3| 3| 9| 3| 3| 3| 3| 3|             
                                           | 0| 1| 5| 0| 4| 6| 1| 0| 5| 4| 0| 5| 6| 4| 5| 6| 0| 1| 6| 8| 5| 6| 1| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
      Inflammation, Acute                  |                                                          2               |             
      Mineralization                       |                                                       2                  |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                   2     2  2                                   1         |             
      Hypertrophy                          |                                  1                                       |             
      Capsule, Hyperplasia                 | 1  1  1  1  1  1  1  2  1  1     1  2  2  1  1        1  1  1     1  1   |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          | 1  1  1           1           2  1  2           1           1        1  1|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | M  +  M  +  +  +  +  +  +  +  +  M  +  +  +  +  +  M  +  M  +  +  M  M  M|             
      Cyst                                 |                X                                                         |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  M  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |             X                                                  X         |             
      Pars Distalis, Hyperplasia           |                                                                          |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Follicle, Cyst                       |                            X                                             |             
      Follicular Cell, Hyperplasia         | 1        2  2  1     2     1  1  1  2  1  2     1     2     1  2     1  2|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tissue NOS                              |                                                                          |             
      Abscess                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                      2                                                   |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Atrophy                              | 3        4  3              2  2  1     2        2        2  2        2   |             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                | 1  1     2  4        2  3  2  3        1  4     2  1     3  2  1     2  1|             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Concretion                           | 1                                                                        |             
      Hyperplasia                          | 2                                                                        |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                          2               |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Proliferation                        | 2                                                     2                  |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  71                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 9| 3| 2| 3| 3| 3| 3| 3| 3| 6| 3| 3| 3| 9| 3| 3| 3| 3| 3|             
                                           | 0| 1| 5| 0| 4| 6| 1| 0| 5| 4| 0| 5| 6| 4| 5| 6| 0| 1| 6| 8| 5| 6| 1| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Hyperplasia, Lymphoid                | 2                    2                                                   |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +|             
      Angiectasis                          |                                              2                           |             
      Atrophy                              |                                                                          |             
      Ectasia                              |       2                                                                  |             
      Hyperplasia, Lymphoid                |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Capsule, Inflammation, Chronic       |                                                                          |             
      Lymphoid Follicle, Atrophy           |                                              3                           |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |    1  1  1     1              1     1                 1        1  2  1  1|             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    | 3                    3                    2  2           2        2     1|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  M  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  M  +  +  M  +  +|             
      Cyst                                 |                               X                    X                     |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Acanthosis                           | 2                                                                        |             
      Hyperkeratosis                       | 2                                                                        |             
      Inflammation, Chronic                | 2                                                                        |             
      Ulcer                                | 2                                                                        |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |    1  1                                         1  1                     |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       | 1              1  1     1  1        1  1           1  1     1        1   |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |    1           1                                                         |             
      Leukocytosis                         |                                                          3               |             
      Bronchiole, Hyperplasia              |                                                       2                  |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  72                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 9| 3| 2| 3| 3| 3| 3| 3| 3| 6| 3| 3| 3| 9| 3| 3| 3| 3| 3|             
                                           | 0| 1| 5| 0| 4| 6| 1| 0| 5| 4| 0| 5| 6| 4| 5| 6| 0| 1| 6| 8| 5| 6| 1| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1|             
    125                                    | 8| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                | 1  1  1              1     2     2        1     1           1     1      |             
      Nasolacrimal Duct, Hyperplasia       |                                                             1  2         |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Phthisis Bulbi                       |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                      +           +                                       |             
      Hyperplasia                          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                              4           3               |             
      Cyst                                 |                                                                          |             
      Inflammation, Chronic Active         |                                              4           1               |             
      Mineralization                       |    1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1     1  1  1  1  1|             
      Nephropathy                          |    1  1     1  1  1  1     1  1  1  1  1  1     1     1     1  1     2  1|             
      Pelvis, Inflammation, Chronic        |                                                                          |             
      Renal Tubule, Hyperplasia            |                            2                                             |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                         4                                                |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  73                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
                                           | 5| 4| 1| 0| 4| 0| 8| 6| 6| 0| 1| 1| 4| 1| 1| 1| 6| 1| 0| 5| 4| 1| 5| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |    2                                                                     |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |    3                                                                     |             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                                                                          |             
      Clear Cell Focus                     |                                                                          |             
      Eosinophilic Focus                   |                                                                          |             
      Fatty Change                         |       1                                         2              1         |             
      Hematopoietic Cell Proliferation     |                                                          1               |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic                |                               1                                         2|             
      Mixed Cell Focus                     |                                              X                           |             
                                            __________________________________________________________________________|             
   Mesentery                               |             +                                                            |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |                1                                                         |             
      Infiltration Cellular, Lymphocyte    |                1                                                         |             
      Inflammation, Chronic                |    3                                                                     |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Duct, Dilatation                     |                                                                          |             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                | 2        3     4  3  3     4        1  2  3  2           2  2     2     2|             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Ulcer                                |          2     2     2     2           2  2              2               |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Erosion                              |                                                                          |             
      Hyperplasia                          |                                              2                           |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   | +  +  +  +  +  +  +     +  +  +     +  +     +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                               4     3                                    |             
      Dysplasia                            | 3  1  2  3  1  1  1     1  2  4     3  2     2  1  1  3  1  2  1  1  3  3|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                                                          |             
      Cardiomyopathy                       |    1                                               1           1         |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  74                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
                                           | 5| 4| 1| 0| 4| 0| 8| 6| 6| 0| 1| 1| 4| 1| 1| 1| 6| 1| 0| 5| 4| 1| 5| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
      Inflammation, Acute                  |                                                                          |             
      Mineralization                       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                         1                          3                 1   |             
      Hypertrophy                          |                      1  1  1                                             |             
      Capsule, Hyperplasia                 | 1     1     1     1  1  1  1  1  1     2  1  1  1  1  1  1  1  1  1  1  1|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          | 1                 1  3     2           1        1  1  2        1  3  3  2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  +  +  +  M  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +|             
      Cyst                                 |                X     X                                               X   |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  |                                        X                                 |             
      Pars Distalis, Hyperplasia           |                                                                3         |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Follicle, Cyst                       |                                                                          |             
      Follicular Cell, Hyperplasia         | 2  1  1  1  4  1  1     2  1     1     1  2  3  1  3  2  2  2  1  2  1  2|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Tissue NOS                              |    +                                                                     |             
      Abscess                              |    4                                                                     |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                                          |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                      4   |             
      Atrophy                              | 2  3  2     1           2  2  1     1  1  2  2     2  2     3  2  2  4  2|             
      Hyperplasia                          |                               1                                          |             
      Inflammation, Chronic                |    2  2  2  1  2        2  1  1  3  1  1     3  3  2     3     2  2  4  2|             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Concretion                           |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |    3                                                                     |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Proliferation                        |    2                                                                     |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | M  M  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +  M  +  +  +  +  +  M  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  75                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
                                           | 5| 4| 1| 0| 4| 0| 8| 6| 6| 0| 1| 1| 4| 1| 1| 1| 6| 1| 0| 5| 4| 1| 5| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Hyperplasia, Lymphoid                |                               3                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +  +  +  +  +  M  +  +  +|             
      Angiectasis                          |                                  2                                       |             
      Atrophy                              |                                        2                                 |             
      Ectasia                              |                                                                          |             
      Hyperplasia, Lymphoid                |       3                                                                  |             
      Inflammation, Chronic                |    4                                                                     |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Capsule, Inflammation, Chronic       |    4                                                                     |             
      Lymphoid Follicle, Atrophy           |                                                                          |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         | 1        1     1                 1                    1  1  1        1   |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    4  1                          1  2           2           3           1|             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  M  +  +  +  +  +  +  +  +  +  M  +  M  +  +  +  +  +  +  +  M  +  +|             
      Cyst                                 |    X           X                       X           X     X     X         |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  M  +  +  +  M  +  M  M  +  M  +  +  +  M  +  +  +  M  +  +  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |    4                                                                     |             
      Acanthosis                           |                                                                          |             
      Hyperkeratosis                       |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Ulcer                                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                      1                                1  1               |             
      Infiltration Cellular, Lymphocyte    |                                                             1            |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       | 1  2  1           1     1     1  1  1  1     1  1  1  1  1  2           1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |                   1                                         1            |             
      Leukocytosis                         |                                                                          |             
      Bronchiole, Hyperplasia              |                                           1                              |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  76                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3|             
                                           | 5| 4| 1| 0| 4| 0| 8| 6| 6| 0| 1| 1| 4| 1| 1| 1| 6| 1| 0| 5| 4| 1| 5| 1| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    125                                    | 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Inflammation, Acute                  |                2                                                         |             
      Inflammation, Chronic                | 2              3     1  1  2           1  2  1        1           1  2   |             
      Nasolacrimal Duct, Hyperplasia       |                                                                          |             
      Olfactory Epithelium, Hyperplasia    |                3                                                         |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Ear                                     |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                            +                                             |             
      Phthisis Bulbi                       |                            X                                             |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                               +                                          |             
      Hyperplasia                          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                                                          |             
      Cyst                                 | X                                                              X         |             
      Inflammation, Chronic Active         |                                                                          |             
      Mineralization                       | 1  1  1  1  1  1  1  1  1  1  1  1     1  1  1  1  1  1  1  1  1  1  1  1|             
      Nephropathy                          | 1  2     1  1  1  1  1  1  1  1  1  2  1  1  1  1  1  1  1  1  1  1  1  1|             
      Pelvis, Inflammation, Chronic        |                                                       1                  |             
      Renal Tubule, Hyperplasia            |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  77                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 6| 3| 3| 0| 3| 3| 3| 3| 3|                                            |            |
                                           | 5| 3| 1| 6| 9| 6| 5| 4| 1| 6|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|                                            |      A     |
    125                                    | 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|                                            |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  A  +  +  +  +  +  +  +  +                                             |  56        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  A  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  A  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  A  +  +  +  +  +  +  +  +                                             |  57        |
      Lymphoid Tissue, Hyperplasia,        |                                                                          |            |
          Lymphoid                         |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  A  +  +  +  +  +  +  +  +                                             |  57        |
      Inflammation, Chronic                |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  A  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  A  +  +  +  +  +  +  +  +                                             |  57        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Basophilic Focus                     |                                                                          |      2     |
      Clear Cell Focus                     | X                                                                        |      1     |
      Eosinophilic Focus                   | X                                                                        |      1     |
      Fatty Change                         |       1     2                                                            |     11  1.2|
      Hematopoietic Cell Proliferation     |                                                                          |      1  1.0|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                |                   1                                                      |      4  1.5|
      Mixed Cell Focus                     |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  A  +  +  +  +  +  +  +  +                                             |  59        |
      Atrophy                              |                                                                          |      1  1.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Inflammation, Chronic                |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Duct, Dilatation                     |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  A  +  +  +  +  +  +  +  +                                             |  58        |
      Hyperplasia, Squamous                | 1              3     2  3                                                |     33  2.8|
      Infiltration Cellular, Lymphocyte    |          3                                                               |      1  3.0|
      Ulcer                                |                2     2                                                   |     17  2.0|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  A  +  +  +  +  +  +  +  +                                             |  58        |
      Erosion                              |                                                                          |      1  2.0|
      Hyperplasia                          |                                                                          |      2  2.0|
      Infiltration Cellular, Lymphocyte    |          3                                                               |      1  3.0|
                                            __________________________________________________________________________|____________|
   Tongue                                  |                      +                                                   |   3        |
                                            __________________________________________________________________________|____________|
   Tooth                                   | +     +     +  +  +  +  +  +                                             |  48        |
      Abscess                              |                                                                          |      2  3.5|
      Dysplasia                            | 2     1     1  1  1  1  2  1                                             |     47  1.6|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  78                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 6| 3| 3| 0| 3| 3| 3| 3| 3|                                            |            |
                                           | 5| 3| 1| 6| 9| 6| 5| 4| 1| 6|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|                                            |      A     |
    125                                    | 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|                                            |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Bacterium                            |                                                                          |      1  2.0|
      Cardiomyopathy                       |                                                                          |      9  1.4|
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Mineralization                       |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          | 1                                                                        |      8  1.6|
      Hypertrophy                          |          1  1                                                            |      6  1.0|
      Capsule, Hyperplasia                 | 1  1  1  1  1  1     1  1  2                                             |     50  1.1|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +                                             |  59        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  A  +  +  +  +  +  +  +  +                                             |  59        |
      Hyperplasia                          |          2  2     4        1                                             |     27  1.6|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | M  +  +  +  +  +  +  +  +  +                                             |  47        |
      Cyst                                 |                         X                                                |      5     |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +                                             |  57        |
      Pars Distalis, Cyst                  | X                                                                        |      4     |
      Pars Distalis, Hyperplasia           |             2                                                            |      2  2.5|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Follicle, Cyst                       |                                                                          |      1     |
      Follicular Cell, Hyperplasia         | 1     2  1  2  1  1  2  2  2                                             |     48  1.6|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Tissue NOS                              |                                                                          |   1        |
      Abscess                              |                                                                          |      1  4.0|
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Granuloma Sperm                      |                         3                                                |      2  2.5|
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +                                             |  59        |
      Abscess                              |                                                                          |      1  4.0|
      Atrophy                              | 3  3  3  2  3  1     2     2                                             |     37  2.2|
      Hyperplasia                          |                                                                          |      1  1.0|
      Inflammation, Chronic                | 3     3  2     1  2     1  2                                             |     43  2.0|
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Concretion                           |                                                                          |      1  1.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  79                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 6| 3| 3| 0| 3| 3| 3| 3| 3|                                            |            |
                                           | 5| 3| 1| 6| 9| 6| 5| 4| 1| 6|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|                                            |      A     |
    125                                    | 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|                                            |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Hyperplasia                          |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Proliferation                        | 1                                                                        |      4  1.8|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  A  +  +  +  +  +  +  +  +                                             |  50        |
      Hyperplasia, Lymphoid                |                                                                          |      3  2.3|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  A  +  +  +  +  +  +  +  +                                             |  55        |
      Angiectasis                          |                                                                          |      2  2.0|
      Atrophy                              |                                                                          |      1  2.0|
      Ectasia                              |                                                                          |      1  2.0|
      Hyperplasia, Lymphoid                |                                                                          |      1  3.0|
      Inflammation, Chronic                |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  M  +  +  +  +  +  +  +  +                                             |  59        |
      Capsule, Inflammation, Chronic       |                                                                          |      1  4.0|
      Lymphoid Follicle, Atrophy           |                                                                          |      1  3.0|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         | 1                                                                        |     20  1.1|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    |                                                                          |     14  2.1|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  A  +  +  +  +  +  M  +  +                                             |  50        |
      Cyst                                 |       X     X     X     X                                                |     12     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  M  M  M  M  M  +  +  +                                             |  47        |
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Abscess                              |                                                                          |      1  4.0|
      Acanthosis                           |                                                                          |      1  2.0|
      Hyperkeratosis                       |                                                                          |      1  2.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
      Ulcer                                |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  80                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 7| 7| 7| 7| 7| 7| 7|                                            |            |
                             DAY ON TEST   | 3| 6| 3| 3| 0| 3| 3| 3| 3| 3|                                            |            |
                                           | 5| 3| 1| 6| 9| 6| 5| 4| 1| 6|                                            |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|                                            |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|                                            |      A     |
    125                                    | 3| 3| 3| 3| 3| 3| 3| 3| 3| 4|                                            |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|                                            |            |
 __________________________________________________________________________________________________________________________________ 
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |            |
                                           |                                                                          |            |
      Degeneration                         |                                                                          |      7  1.0|
      Infiltration Cellular, Lymphocyte    |                   1  1                                                   |      3  1.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Mineralization                       |    1        1  1     2  1  1                                             |     33  1.1|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +                                             |  60        |
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Hemorrhage                           |                                                                          |      4  1.0|
      Leukocytosis                         |                                                                          |      1  3.0|
      Bronchiole, Hyperplasia              |                                                                          |      2  1.5|
                                            __________________________________________________________________________|____________|
   Nose                                    | +  A  +  +  +  +  +  +  +  +                                             |  59        |
      Inflammation, Acute                  |                                                                          |      1  2.0|
      Inflammation, Chronic                | 1                          1                                             |     23  1.3|
      Nasolacrimal Duct, Hyperplasia       |                                                                          |      2  1.5|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +                                             |  60        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Ear                                     |             +                                                            |   1        |
                                            __________________________________________________________________________|____________|
   Eye                                     |                                                                          |   1        |
      Phthisis Bulbi                       |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                            +                                             |   4        |
      Hyperplasia                          |                            2                                             |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Bacterium                            |                                                                          |      2  3.5|
      Cyst                                 |                                                                          |      2     |
      Inflammation, Chronic Active         |                                                                          |      2  2.5|
      Mineralization                       | 1     1  1  1  1  1  1  1  1                                             |     56  1.0|
      Nephropathy                          | 1  3  1  1     1  1     1  1                                             |     50  1.1|
      Pelvis, Inflammation, Chronic        |    2                                                                     |      2  1.5|
      Renal Tubule, Hyperplasia            |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +                                             |  60        |
      Dilatation                           |                                                                          |      1  4.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  81                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 2| 7| 6| 7| 0| 7| 7| 7| 3| 7| 4| 7| 7| 2| 7| 7| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 3| 0| 2| 3| 7| 3| 9| 3| 3| 3| 9| 3| 6| 3| 3| 4| 3| 2| 1| 3| 3| 3| 3|             
                                           | 6| 4| 1| 5| 5| 0| 0| 6| 4| 5| 6| 0| 5| 6| 1| 0| 1| 6| 1| 8| 1| 1| 1| 0| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  A  +  +  +  +  +  +  +  +     +  +  +  +  M  M  +  +  M  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  A  +  +  A  +  +  +  +  +  +  +     +  +  A  +  +  A  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  A  +  +  A  +  +  +  +  +  +  +     +  +  A  +  +  A  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  A  +  +  A  +  +  +  +  +  +  +     +  +  A  +  +  A  +  +  +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                                       3           1      |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | A  +  +  A  +  +  A  +  A  +  +  +  +  +     +  +  A  +  +  A  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | A  +  +  A  +  +  A  +  A  +  +  +  A  +     +  +  A  +  +  A  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | A  +  +  A  +  +  A  +  A  +  +  +  +  +     +  +  A  +  +  A  +  +  +  +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Basophilic Focus                     |                                                                          |             
      Fatty Change                         |                                                 1                        |             
      Hematopoietic Cell Proliferation     |                1        2                                                |             
      Hemorrhage                           |                                                                          |             
      Mixed Cell Focus                     |                                                                          |             
      Bile Duct, Dilatation                |                                                                         3|             
                                            __________________________________________________________________________|             
   Mesentery                               |                            +                                             |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |    1                                                                 1   |             
      Arteriole, Inflammation, Chronic     |                                                                      2   |             
      Arteriole, Mineralization            |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  A  +  +  +  +  +  +  +  +  +  +     +  +  A  +  +  +  +  +  +  +|             
      Hyperplasia, Squamous                |    2  1        3              2  2     1     2  4     1  2     4  4     2|             
      Ulcer                                |    2           2              2                                2         |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  A  +  +  +  +  M  +  +  +  +  +     +  +  A  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                              2                           |             
                                            __________________________________________________________________________|             
   Tongue                                  |                                                 +  +                     |             
      Dysplasia                            |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   | +  +  +        +  +  +     +  +  +     +     +  +     +     +  +  +  +  +|             
      Dysplasia                            |    1  1        1  1  1     2  1  1     1     2  1     1     1  2  2  1  1|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       | 2                                                     1  2        2      |             
      Inflammation, Chronic                |                                                                          |             
      Atrium, Thrombosis                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                                                    1                     |             
      Hypertrophy                          |                                  2           1  1                        |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  82                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 2| 7| 6| 7| 0| 7| 7| 7| 3| 7| 4| 7| 7| 2| 7| 7| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 3| 0| 2| 3| 7| 3| 9| 3| 3| 3| 9| 3| 6| 3| 3| 4| 3| 2| 1| 3| 3| 3| 3|             
                                           | 6| 4| 1| 5| 5| 0| 0| 6| 4| 5| 6| 0| 5| 6| 1| 0| 1| 6| 1| 8| 1| 1| 1| 0| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Capsule, Hyperplasia                 | 1  1  1     1  1  1  2     1  1  1     1     1  1  1  1  1  1  1  1     2|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          | 1              2                                                         |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | M  +  +  +  +  +  +  +  +  +  M  M  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  M  +  +     +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Cyst                  | X                                                     X     X            |             
      Pars Distalis, Hyperplasia           |                                                                         2|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                      1   |             
      Follicular Cell, Hyperplasia         |    1  2        2  1  2     1  2  4     1     1  4     3        2  3  3   |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                          4               |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  M  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                          4               |             
      Atrophy                              | 3              3        2        1  2                 1  2  2           2|             
      Dilatation                           |                                                                          |             
      Inflammation, Chronic                |    1                       1     2     1        3     1  4  2  3  2      |             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                          2               |             
      Inflammation, Acute                  | 4                                                                        |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                          4               |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  M  +  +  +  +  +|             
      Myelofibrosis                        |                                                                          |             
      Proliferation                        | 3                       2                                               2|             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  M  +  +  +     +  M  +  +  +  +  +  +     +|             
      Atrophy                              | 2                       2                          2                     |             
      Infiltration Cellular, Plasma Cell   |                                                       4                  |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  A  +  +  +  +  M  +  +  +  +  +     +  +  +  +  +  +  +  +     +|             
      Atrophy                              | 2              2                                   2                     |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           | 2                                                                        |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |    1  2                                               2     2        2   |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  83                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 2| 7| 6| 7| 0| 7| 7| 7| 3| 7| 4| 7| 7| 2| 7| 7| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 3| 0| 2| 3| 7| 3| 9| 3| 3| 3| 9| 3| 6| 3| 3| 4| 3| 2| 1| 3| 3| 3| 3|             
                                           | 6| 4| 1| 5| 5| 0| 0| 6| 4| 5| 6| 0| 5| 6| 1| 0| 1| 6| 1| 8| 1| 1| 1| 0| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    1  1                 4  1                          2  4     1         |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  M  +  +  +  +  +  +  +  +  +  +  M     +  +  +  M  +  +  +  +  +  +|             
      Cyst                                 |                            X     X                                       |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                         4                                                |             
      Subcutaneous Tissue, Foreign Body    |                         2                                                |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  M  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                   1                                      1           1   |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                |                         2                                                |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |       1           1  1     2  2              1                 1  1  1  1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         |                                  1                                       |             
      Mineralization                       |                                  1                                       |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Hemorrhage                           |             1                                            1               |             
      Inflammation, Chronic                |                         2                                                |             
      Alveolar Epithelium, Hyperplasia     |                                                                1         |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                 1        1              1|             
      Olfactory Epithelium, Hyperplasia    |                                  3                                3      |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Cataract                             |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |       +                    +                          +                  |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  84                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 2| 7| 6| 7| 0| 7| 7| 7| 3| 7| 4| 7| 7| 2| 7| 7| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 3| 0| 2| 3| 7| 3| 9| 3| 3| 3| 9| 3| 6| 3| 3| 4| 3| 2| 1| 3| 3| 3| 3|             
                                           | 6| 4| 1| 5| 5| 0| 0| 6| 4| 5| 6| 0| 5| 6| 1| 0| 1| 6| 1| 8| 1| 1| 1| 0| 1|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6| 6| 6| 6| 6| 6|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cyst                                 |                                                                          |             
      Inflammation, Chronic Active         | 4                                                                        |             
      Mineralization                       |    1  1  1     1  1  1     1  1        1     1  1     1     1  1  1  1  1|             
      Nephropathy                          |    2  1        1     1     1  1        1     1  1     1  3     1     1  1|             
      Pelvis, Inflammation, Chronic        | 2                                                        2               |             
      Pelvis, Transitional Epithelium,     |                                                                          |             
           Hyperplasia                     |                                                                          |             
      Renal Tubule, Bacterium              | X                                                                        |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                                          |             
      Infiltration Cellular, Lymphocyte    |                                                                          |             
      Inflammation, Chronic                | 2                                                        2               |             
      Transitional Epithelium, Bacterium   |                                                                          |             
      Transitional Epithelium, Hyperplasia |                                                          2               |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  85                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 7| 7| 7| 4| 4| 7| 7| 7| 7| 7| 4| 4| 7| 7| 7| 4| 7| 7| 7| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 9| 3| 3| 3| 6| 6| 3| 3| 3| 3| 3| 6| 8| 3| 3| 3| 6| 3| 3| 3| 3| 3| 6| 3|             
                                           | 4| 3| 5| 0| 4| 1| 1| 1| 5| 0| 1| 0| 1| 6| 0| 1| 6| 1| 5| 6| 4| 1| 0| 1| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +        +  +  M  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |             3                                                            |             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Angiectasis                          |                                        2                                 |             
      Basophilic Focus                     | X                                                                        |             
      Fatty Change                         |                                                                          |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Hemorrhage                           |                                                                          |             
      Mixed Cell Focus                     |                                           X                             X|             
      Bile Duct, Dilatation                |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Inflammation, Chronic                |                                                                          |             
      Arteriole, Inflammation, Chronic     |                                                                          |             
      Arteriole, Mineralization            |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
      Hyperplasia, Squamous                | 2  3  2  3  2        2  2  3     2        2     2     1  2        1     3|             
      Ulcer                                | 2     2  3                 2                    2                       2|             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Tongue                                  |       +                                                                  |             
      Dysplasia                            |       1                                                                  |             
                                            __________________________________________________________________________|             
   Tooth                                   | +     +  +  +           +  +                 +  +     +  +  +  +        +|             
      Dysplasia                            | 1     1  1  1           1  3                 3  1     2  1  3  1        1|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Cardiomyopathy                       | 1           1                                                            |             
      Inflammation, Chronic                |                                                                          |             
      Atrium, Thrombosis                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Hyperplasia                          |          4                    1                       1                  |             
      Hypertrophy                          |                               1                                   2     2|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  86                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 7| 7| 7| 4| 4| 7| 7| 7| 7| 7| 4| 4| 7| 7| 7| 4| 7| 7| 7| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 9| 3| 3| 3| 6| 6| 3| 3| 3| 3| 3| 6| 8| 3| 3| 3| 6| 3| 3| 3| 3| 3| 6| 3|             
                                           | 4| 3| 5| 0| 4| 1| 1| 1| 5| 0| 1| 0| 1| 6| 0| 1| 6| 1| 5| 6| 4| 1| 0| 1| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      Capsule, Hyperplasia                 | 2  1  1  1           1  1  1     1        1  1  1     1  1  1  1  1     1|             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Hyperplasia                          |    2  1              1                    2           3  1              2|             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +        M  +  +  +  +     M  +  M  +     +  +  +  M  +     +|             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |                                                                          |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Inflammation, Chronic                |                                                                          |             
      Follicular Cell, Hyperplasia         | 1     3  1  1        2  3  1  3  1        3  2  2     2  1  2  2  2     1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                                          |             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Abscess                              |                                                                          |             
      Atrophy                              |             2        1           2        1  2           2  1           3|             
      Dilatation                           |                                                                          |             
      Inflammation, Chronic                | 1  1        1        1     1     1     1  2  1              1  4  1     3|             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Abscess                              |                                                                          |             
      Inflammation, Acute                  |                                                                          |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granuloma Sperm                      |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Myelofibrosis                        |                                        1                                 |             
      Proliferation                        |          2                                                               |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                               +                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  M        +  +  M  +  +     +  +  +  +     M  +  +  +  +     M|             
      Atrophy                              |                                                                          |             
      Infiltration Cellular, Plasma Cell   |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +        +  +  +  +  +     A  +  +  +     +  +  +  +  +     +|             
      Atrophy                              |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Lymphoid Follicle, Atrophy           |                                                                          |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |                      2                    2     1                        |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  87                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 7| 7| 7| 4| 4| 7| 7| 7| 7| 7| 4| 4| 7| 7| 7| 4| 7| 7| 7| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 9| 3| 3| 3| 6| 6| 3| 3| 3| 3| 3| 6| 8| 3| 3| 3| 6| 3| 3| 3| 3| 3| 6| 3|             
                                           | 4| 3| 5| 0| 4| 1| 1| 1| 5| 0| 1| 0| 1| 6| 0| 1| 6| 1| 5| 6| 4| 1| 0| 1| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |          2           2        2        3              1  1               |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +        +  +  +  +  +     M  +  +  +     +  M  +  +  +     +|             
      Cyst                                 |             X           X                             X                  |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | M  +  +  +  +        +  M  +  +  M     +  M  +  +     +  +  +  +  +     M|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Abscess                              |                                                                          |             
      Subcutaneous Tissue, Foreign Body    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Degeneration                         |    1                          1              2                           |             
      Infiltration Cellular, Lymphocyte    |                                           1  1                           |             
      Inflammation, Chronic                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Mineralization                       | 1  1        1           1  1                    1           1     1      |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Degeneration                         |                                                                          |             
      Mineralization                       |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Hemorrhage                           |          1                 2              1                              |             
      Inflammation, Chronic                |                                                                          |             
      Alveolar Epithelium, Hyperplasia     |                                                                          |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Inflammation, Chronic                | 1     1  1                       1                       1     1         |             
      Olfactory Epithelium, Hyperplasia    |          2                                                               |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
      Cataract                             |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                             +            |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +        +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Bacterium                            |                                        4                                 |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  88                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 7| 7| 7| 4| 4| 7| 7| 7| 7| 7| 4| 4| 7| 7| 7| 4| 7| 7| 7| 7| 7| 4| 7|             
                             DAY ON TEST   | 3| 9| 3| 3| 3| 6| 6| 3| 3| 3| 3| 3| 6| 8| 3| 3| 3| 6| 3| 3| 3| 3| 3| 6| 3|             
                                           | 4| 3| 5| 0| 4| 1| 1| 1| 5| 0| 1| 0| 1| 6| 0| 1| 6| 1| 5| 6| 4| 1| 0| 1| 6|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    250                                    | 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 8| 8| 9|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cyst                                 |                                              X                    X      |             
      Inflammation, Chronic Active         |                                        4                                 |             
      Mineralization                       | 1  1  1  1           1  1  1  1  1        1  1        1  1  1  1  1     1|             
      Nephropathy                          | 1     1  1  3        1  1     1  3        1  2  1     1  1  1  1  1     1|             
      Pelvis, Inflammation, Chronic        |             2                                                            |             
      Pelvis, Transitional Epithelium,     |                                                                          |             
           Hyperplasia                     |                                                                          |             
      Renal Tubule, Bacterium              |                                                                          |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +  +  +     +|             
      Dilatation                           |                            4              4                              |             
      Infiltration Cellular, Lymphocyte    |                                                          1               |             
      Inflammation, Chronic                |                                                                          |             
      Transitional Epithelium, Bacterium   |                                                                          |             
      Transitional Epithelium, Hyperplasia |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  89                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 0| 7| 7| 4| 5| 5| 5| 7| 4| 7| 7| 7| 7| 7| 7| 7| 4| 4| 7| 7|              |            |
                             DAY ON TEST   | 2| 3| 3| 5| 7| 6| 0| 3| 6| 3| 3| 3| 3| 3| 3| 3| 6| 6| 3| 3|              |            |
                                           | 8| 6| 4| 0| 4| 3| 8| 5| 1| 4| 0| 6| 0| 4| 4| 5| 1| 1| 0| 1|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    250                                    | 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  M  +  +  +     +  +  +  +  +  +  +        +  +               |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  56        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  56        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  56        |
      Lymphoid Tissue, Hyperplasia,        |                                                                          |            |
          Lymphoid                         |                                                                          |      3  2.3|
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  53        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  54        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Angiectasis                          |                                                                          |      1  2.0|
      Basophilic Focus                     |                                                                          |      1     |
      Fatty Change                         |                                                                          |      1  1.0|
      Hematopoietic Cell Proliferation     |                                                                          |      2  1.5|
      Hemorrhage                           |          3                                                               |      1  3.0|
      Mixed Cell Focus                     |                                                                          |      2     |
      Bile Duct, Dilatation                |                                                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Inflammation, Chronic                |                                                                          |      2  1.0|
      Arteriole, Inflammation, Chronic     |                                                                          |      1  2.0|
      Arteriole, Mineralization            |    1                                                                     |      1  1.0|
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  58        |
      Hyperplasia, Squamous                |       3           3  2     2  2  3     3     2        3  2               |     38  2.3|
      Ulcer                                |       2                    2     2     1                                 |     14  2.0|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  57        |
      Hyperplasia                          |                            1                                             |      2  1.5|
                                            __________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   3        |
      Dysplasia                            |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Tooth                                   |    +  +           +  +     +  +  +  +     +  +        +  +               |  43        |
      Dysplasia                            |    2  2           1  1     1  1  1  1     2  1        2  1               |     42  1.4|
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Cardiomyopathy                       |                                                                          |      6  1.5|
      Inflammation, Chronic                |             2                                                            |      1  2.0|
      Atrium, Thrombosis                   |             X                                                            |      1     |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  90                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 0| 7| 7| 4| 5| 5| 5| 7| 4| 7| 7| 7| 7| 7| 7| 7| 4| 4| 7| 7|              |            |
                             DAY ON TEST   | 2| 3| 3| 5| 7| 6| 0| 3| 6| 3| 3| 3| 3| 3| 3| 3| 6| 6| 3| 3|              |            |
                                           | 8| 6| 4| 0| 4| 3| 8| 5| 1| 4| 0| 6| 0| 4| 4| 5| 1| 1| 0| 1|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    250                                    | 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Hyperplasia                          |                                           2                              |      5  1.8|
      Hypertrophy                          |                            1                                             |      7  1.4|
      Capsule, Hyperplasia                 |    2     1  1  1  1        2  1  1  1  1  1  1        2  1               |     51  1.1|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Hyperplasia                          |    1  1     2  1     1        1     2                 1                  |     17  1.5|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | M  +  M  +  +  +  +  M     M  +  +  +  +  +  +        +  +               |  50        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  M               |  59        |
      Pars Distalis, Cyst                  |       X                                                                  |      4     |
      Pars Distalis, Hyperplasia           |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Follicular Cell, Hyperplasia         |    2  1              1     2  2  3  4  3  2  2        2  3               |     45  2.0|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +               |  70        |
      Granuloma Sperm                      |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  60        |
      Abscess                              |                                                                          |      1  4.0|
      Atrophy                              |       2     2  2     1     1        2     2  1                           |     25  1.8|
      Dilatation                           |                      3                                                   |      1  3.0|
      Inflammation, Chronic                |    2  2     1  2  4        1  2  1        2  1        1  2               |     35  1.7|
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  62        |
      Abscess                              |                                                                          |      1  2.0|
      Inflammation, Acute                  |             2                                                            |      2  3.0|
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  62        |
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +               |  70        |
      Granuloma Sperm                      |                                                                          |      1  4.0|
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  60        |
      Myelofibrosis                        |                                                                          |      1  1.0|
      Proliferation                        |             2                                                            |      5  2.2|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  91                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 0| 7| 7| 4| 5| 5| 5| 7| 4| 7| 7| 7| 7| 7| 7| 7| 4| 4| 7| 7|              |            |
                             DAY ON TEST   | 2| 3| 3| 5| 7| 6| 0| 3| 6| 3| 3| 3| 3| 3| 3| 3| 6| 6| 3| 3|              |            |
                                           | 8| 6| 4| 0| 4| 3| 8| 5| 1| 4| 0| 6| 0| 4| 4| 5| 1| 1| 0| 1|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    250                                    | 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                      +                                                   |   2        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  54        |
      Atrophy                              |                                                                          |      3  2.0|
      Infiltration Cellular, Plasma Cell   |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  57        |
      Atrophy                              |             2  2                                                         |      5  2.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Lymphoid Follicle, Atrophy           |                3                                                         |      2  2.5|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |       1  2                          1                                    |     11  1.6|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    | 1     2     3                 2                                          |     17  1.9|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +     +  +  +  M  +  +  +        +  +               |  55        |
      Cyst                                 |                                                       X                  |      6     |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +     +  M  +  +  +  +  +        +  M               |  54        |
                                            __________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Abscess                              |                                                                          |      1  4.0|
      Subcutaneous Tissue, Foreign Body    |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Degeneration                         |                            1           1                                 |      8  1.1|
      Infiltration Cellular, Lymphocyte    |                                                                          |      2  1.0|
      Inflammation, Chronic                |                                                                          |      1  2.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Mineralization                       |    1  1  1  1     1        1  1           1  1           2               |     28  1.1|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Degeneration                         |                                                                          |      1  1.0|
      Mineralization                       |                                                                          |      1  1.0|
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Hemorrhage                           |          1                                                               |      6  1.2|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  92                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 0| 7| 7| 4| 5| 5| 5| 7| 4| 7| 7| 7| 7| 7| 7| 7| 4| 4| 7| 7|              |            |
                             DAY ON TEST   | 2| 3| 3| 5| 7| 6| 0| 3| 6| 3| 3| 3| 3| 3| 3| 3| 6| 6| 3| 3|              |            |
                                           | 8| 6| 4| 0| 4| 3| 8| 5| 1| 4| 0| 6| 0| 4| 4| 5| 1| 1| 0| 1|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    250                                    | 9| 9| 9| 9| 9| 9| 9| 9| 9| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
      Inflammation, Chronic                |             3                                                            |      2  2.5|
      Alveolar Epithelium, Hyperplasia     |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Inflammation, Chronic                |             1        2        1                       1  1               |     14  1.1|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      3  2.7|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Eye                                     |                                  +                                       |   1        |
      Cataract                             |                                  3                                       |      1  3.0|
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                  +                                       |   5        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  61        |
      Bacterium                            |             4                                                            |      2  4.0|
      Cyst                                 |                                     X                                    |      3     |
      Inflammation, Chronic Active         |             4                                                            |      3  4.0|
      Mineralization                       |    1  1              1     1  1     1  1  1  1        1  1               |     45  1.0|
      Nephropathy                          |    1  1  2     2     1     1        1  1  1  1        1  1               |     43  1.2|
      Pelvis, Inflammation, Chronic        |             2  2                                                         |      5  2.0|
      Pelvis, Transitional Epithelium,     |                                                                          |            |
           Hyperplasia                     |                1                                                         |      1  1.0|
      Renal Tubule, Bacterium              |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +     +  +  +  +  +  +  +        +  +               |  62        |
      Dilatation                           |                                                                          |      2  4.0|
      Infiltration Cellular, Lymphocyte    |                                                                          |      1  1.0|
      Inflammation, Chronic                |             2  2                                                         |      4  2.0|
      Transitional Epithelium, Bacterium   |             1                                                            |      1  1.0|
      Transitional Epithelium, Hyperplasia |                2                                                         |      2  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page  93                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 4| 7| 7| 0| 4| 7| 7| 7| 2| 0| 7| 4| 5| 7| 6| 7| 4| 2| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 3| 3| 1| 3| 3| 0| 6| 3| 3| 3| 5| 8| 3| 6| 8| 3| 2| 3| 6| 7| 3| 3| 6| 5| 3|             
                                           | 6| 4| 8| 1| 4| 6| 1| 5| 0| 4| 1| 6| 4| 1| 7| 4| 5| 6| 1| 5| 5| 5| 1| 6| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Inflammation, Chronic                |                                                                          |             
      Inflammation, Subacute               |                                  2                                       |             
      Perforation                          |                                                                          |             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  A     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Dilatation                           |                                                                          |             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  A     +  +  +  A  +  +     M  +  +  +     +  +  +     +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                                                          |             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Basophilic Focus                     |                                           X                              |             
      Fatty Change                         |                                                                          |             
      Hematopoietic Cell Proliferation     |    1                                                                     |             
      Inflammation, Acute                  |                                                          1               |             
      Inflammation, Chronic Active         |                                                                          |             
      Mixed Cell Focus                     |             X                                                            |             
      Necrosis                             |                                                                          |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  A     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Inflammation, Chronic                |                                                          1               |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  A     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Cyst                                 |                                                                          |             
      Hyperplasia, Squamous                |             2              3              2                          4  2|             
      Ulcer                                |                            2                                             |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  A     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Edema                                |                                                                          |             
      Erosion                              |                                                                          |             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Tooth                                   | +  +     +  +           +  +                       +        +  +        +|             
      Abscess                              |                                                    4                     |             
      Dysplasia                            | 1  2     1  2           1  1                       4        1  1        1|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Cardiomyopathy                       |                            1                                            2|             
      Inflammation, Chronic                |                                  3                                       |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  94                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 4| 7| 7| 0| 4| 7| 7| 7| 2| 0| 7| 4| 5| 7| 6| 7| 4| 2| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 3| 3| 1| 3| 3| 0| 6| 3| 3| 3| 5| 8| 3| 6| 8| 3| 2| 3| 6| 7| 3| 3| 6| 5| 3|             
                                           | 6| 4| 8| 1| 4| 6| 1| 5| 0| 4| 1| 6| 4| 1| 7| 4| 5| 6| 1| 5| 5| 5| 1| 6| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Focal Cellular Change                |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Hypertrophy                          |                      1                       1                           |             
      Inflammation, Chronic                |                                     1                                    |             
      Capsule, Hyperplasia                 | 2  1     1  1        1  2     1     1     1  1  1  1     1  1        1  1|             
      Capsule, Inflammation, Chronic Active|                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Hyperplasia                          |                                                                         2|             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  M     +  +  +  A  +  +     +  +  +  +     +  +  +     +  +|             
      Hyperplasia                          |                      1                       1                 2         |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Cyst                                 |                                                                          |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | M  +  M  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Pars Distalis, Cyst                  |                                                                          |             
      Pars Distalis, Hyperplasia           |                      2                                                   |             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Follicular Cell, Hyperplasia         | 2  2     1  4           2  1                    1  1        1  2        1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Atrophy                              |       2  3           2     1        3        1  2           3  1         |             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |          2              1                 2  1  1  4           1         |             
      Inflammation, Chronic Active         | 4                                                                        |             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Abscess                              |                                                          4               |             
      Concretion                           |                         2                                                |             
      Congestion                           |                                                                          |             
      Hyperplasia                          |                                                                          |             
      Inflammation, Chronic                |          2                                                               |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Hyperplasia                          |                                           2                              |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  95                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 4| 7| 7| 0| 4| 7| 7| 7| 2| 0| 7| 4| 5| 7| 6| 7| 4| 2| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 3| 3| 1| 3| 3| 0| 6| 3| 3| 3| 5| 8| 3| 6| 8| 3| 2| 3| 6| 7| 3| 3| 6| 5| 3|             
                                           | 6| 4| 8| 1| 4| 6| 1| 5| 0| 4| 1| 6| 4| 1| 7| 4| 5| 6| 1| 5| 5| 5| 1| 6| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Proliferation                        |          2                 1                       1     X               |             
      Myeloid Cell, Proliferation          |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +     +  +  +  +  +  +     +  M  +  +     +  +  +     +  +|             
      Atrophy                              |                                                                          |             
      Congestion                           |                2                                                         |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  A     +  +  +  A  M  +     +  +  M  +     +  +  +     +  +|             
      Angiectasis                          |                                                                          |             
      Atrophy                              |                                           3                              |             
      Hyperplasia, Lymphoid                |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Lymphoid Follicle, Atrophy           |                                  2        2                          3   |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |                                              2                           |             
      Red Pulp, Atrophy                    |                                                                          |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    | 2        3                 2                       1     3               |             
                                            __________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  M     +  +  +  A  +  M     +  +  +  +     +  +  +     +  M|             
      Cyst                                 |    X                                                                     |             
      Ectopic Parathyroid Gland            |                                                                          |             
      Inflammation, Chronic                |                                  3                                       |             
      Necrosis                             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +     +  +  +  +  +  +     +  M  +  M     +  +  M     +  M|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Subcutaneous Tissue, Abscess         |                1                                                         |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Degeneration                         |             1                             1                          1   |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  M     +  +  +     +  +|             
      Mineralization                       | 1  1     1                 1              1  1           1              1|             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Congestion                           |                                                                          |             
      Hemorrhage                           |                               2                 1                       1|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  96                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 4| 7| 7| 0| 4| 7| 7| 7| 2| 0| 7| 4| 5| 7| 6| 7| 4| 2| 7| 7| 4| 4| 7|             
                             DAY ON TEST   | 3| 3| 1| 3| 3| 0| 6| 3| 3| 3| 5| 8| 3| 6| 8| 3| 2| 3| 6| 7| 3| 3| 6| 5| 3|             
                                           | 6| 4| 8| 1| 4| 6| 1| 5| 0| 4| 1| 6| 4| 1| 7| 4| 5| 6| 1| 5| 5| 5| 1| 6| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 3|             
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Inflammation, Chronic                |                                  2                                       |             
      Leukocytosis                         |                                                                          |             
      Alveolar Epithelium, Hyperplasia     |                      1                                                   |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |                      1                                                   |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  A     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Inflammation, Chronic                |                                                                          |             
      Glands, Hyperplasia, Glandular       |                                                                          |             
      Nasolacrimal Duct, Hyperplasia       | 3  2                                                                     |             
      Olfactory Epithelium, Hyperplasia    |                                                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |          +                                                               |             
      Hyperplasia                          |          2                                                               |             
                                            __________________________________________________________________________|             
   Lacrimal Gland                          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Bacterium                            |                                                                          |             
      Cyst                                 |                                                             X            |             
      Hydronephrosis                       |                                                                          |             
      Inflammation, Chronic Active         |                            3                       3                     |             
      Mineralization                       | 1  1     1  1        1                    1  1  1  1           1        1|             
      Nephropathy                          | 1  1     2  1           2  1        1        1  2  2     3  3  2     1  1|             
      Pelvis, Inflammation, Chronic        |          2                 3                                             |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  M     +  +  +  +  +  +     +  +  +  +     +  +  +     +  +|             
      Dilatation                           |                         4                                                |             
      Inflammation, Chronic                |          2                 3                       1                     |             
      Transitional Epithelium, Hyperplasia |          2                 2                       1                     |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  97                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 2| 7| 7| 7| 5| 7| 5| 4| 6| 7| 0| 0| 7| 2| 7| 2| 5| 7| 7| 4| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 0| 3| 3| 3| 6| 3| 0| 6| 0| 3| 8| 9| 3| 6| 3| 5| 5| 3| 3| 4| 3| 3| 3|             
                                           | 1| 1| 6| 6| 4| 4| 1| 0| 3| 1| 0| 0| 5| 0| 6| 7| 5| 6| 4| 4| 6| 4| 0| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                        4                                 |             
      Inflammation, Subacute               |                                                                          |             
      Perforation                          |                                        X                                 |             
                                            __________________________________________________________________________|             
   Gallbladder                             | +  +  +  +  +  +  +  +  +     +  +  +  +  +  A  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                                                    3                     |             
                                            __________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +     +  +  +  A  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Tissue, Hyperplasia,        |                                                                          |             
          Lymphoid                         |                                     1                                    |             
                                            __________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basophilic Focus                     |                                                                          |             
      Fatty Change                         |                                     2                                    |             
      Hematopoietic Cell Proliferation     |                                                                          |             
      Inflammation, Acute                  |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
      Mixed Cell Focus                     |                                                                          |             
      Necrosis                             |                                                             2            |             
                                            __________________________________________________________________________|             
   Mesentery                               |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |                                                                          |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Salivary Glands                         | +  M  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cyst                                 |                                                                          |             
      Hyperplasia, Squamous                | 2  2           3  2                       3     2           2     3     3|             
      Ulcer                                | 2              2  2                       1                       2      |             
                                            __________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Edema                                |                                                                      2   |             
      Erosion                              |                                                                          |             
      Hyperplasia                          |                      2                                   1  1            |             
                                            __________________________________________________________________________|             
   Tooth                                   |             +        +           +              +        +  +     +  +   |             
      Abscess                              |                                                          2               |             
      Dysplasia                            |             2        1           2              1        2  4     2  1   |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cardiomyopathy                       |                                                             1  1        1|             
      Inflammation, Chronic                |                   1     1                                                |             
 _____________________________________________________________________________________________________________________|             
                                                             Page  98                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 2| 7| 7| 7| 5| 7| 5| 4| 6| 7| 0| 0| 7| 2| 7| 2| 5| 7| 7| 4| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 0| 3| 3| 3| 6| 3| 0| 6| 0| 3| 8| 9| 3| 6| 3| 5| 5| 3| 3| 4| 3| 3| 3|             
                                           | 1| 1| 6| 6| 4| 4| 1| 0| 3| 1| 0| 0| 5| 0| 6| 7| 5| 6| 4| 4| 6| 4| 0| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
      Focal Cellular Change                |                                                 1                        |             
      Hyperplasia                          |                                                                          |             
      Hypertrophy                          |                                  1                                       |             
      Inflammation, Chronic                |                                                                          |             
      Capsule, Hyperplasia                 | 1  1  1  1     1  1  1  1     1        1  1  1  1  1     1  1  1  1  3   |             
      Capsule, Inflammation, Chronic Active|                                                                          |             
                                            __________________________________________________________________________|             
   Adrenal Medulla                         | +  +  M  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
      Hyperplasia                          |                                                                          |             
                                            __________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +     +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hyperplasia                          |                   1  2                                                   |             
                                            __________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  M  M  +  +  +     +  +  +  +  +  +  M  +  +  M  +  +  M  M  +|             
      Cyst                                 |                      X                                                   |             
                                            __________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  M  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  M  +|             
      Pars Distalis, Cyst                  |                                                                   X      |             
      Pars Distalis, Hyperplasia           |                                                                         1|             
                                            __________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  M  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Follicular Cell, Hyperplasia         |    2     1     3     2        1  2              1           2     1     1|             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Atrophy                              |       2           3     2                                   1        2   |             
      Hyperplasia                          |             2                                                            |             
      Inflammation, Chronic                |    1  1     2                             2     1        3  2        1  2|             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Abscess                              |                                                                          |             
      Concretion                           |             2                                   2           2           2|             
      Congestion                           |                                  3                                       |             
      Hyperplasia                          |                                                       1                  |             
      Inflammation, Chronic                |                                                          2               |             
      Inflammation, Chronic Active         |                         1                                   3            |             
                                            __________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +     +  +  +|             
      Hyperplasia                          |                               2                                          |             
                                            __________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                             Page  99                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 2| 7| 7| 7| 5| 7| 5| 4| 6| 7| 0| 0| 7| 2| 7| 2| 5| 7| 7| 4| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 0| 3| 3| 3| 6| 3| 0| 6| 0| 3| 8| 9| 3| 6| 3| 5| 5| 3| 3| 4| 3| 3| 3|             
                                           | 1| 1| 6| 6| 4| 4| 1| 0| 3| 1| 0| 0| 5| 0| 6| 7| 5| 6| 4| 4| 6| 4| 0| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Proliferation                        |                                                    X     2               |             
      Myeloid Cell, Proliferation          |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  M  +  +  +  +  +  +  +     +  +  +  +  M  +  +  +  +  +  +  +  +  M  +|             
      Atrophy                              |                                                          3               |             
      Congestion                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lymph Node, Mesenteric                  | M  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Angiectasis                          |                                                                          |             
      Atrophy                              |                                                                          |             
      Hyperplasia, Lymphoid                |                                     2                                    |             
      Inflammation, Chronic Active         |                                                                          |             
                                            __________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoid Follicle, Atrophy           |                                                                          |             
      Lymphoid Follicle, Hyperplasia,      |                                                                          |             
          Lymphoid                         |                      1                          2                       2|             
      Red Pulp, Atrophy                    |                                     1                                    |             
      Red Pulp, Hematopoietic Cell         |                                                                          |             
          Proliferation                    |    1                                   3           2     3        1     2|             
                                            __________________________________________________________________________|             
   Thymus                                  | M  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
      Cyst                                 |                                        X                                 |             
      Ectopic Parathyroid Gland            |                                                                          |             
      Inflammation, Chronic                |                                                                          |             
      Necrosis                             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  M  M  +  M  +     +  +  +  +  +  +  M  +  M  M  M  M  M  M  M|             
                                            __________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Subcutaneous Tissue, Abscess         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Skeletal Muscle                         | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Degeneration                         | 1                             1                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mineralization                       |    1     1  1  1  1              1                          1     1  1   |             
                                            __________________________________________________________________________|             
   Peripheral Nerve                        | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                            __________________________________________________________________________|             
   Spinal Cord                             | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +     +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Congestion                           |                                                                3         |             
      Hemorrhage                           |                   1                                                  1   |             
 _____________________________________________________________________________________________________________________|             
                                                             Page 100                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 _____________________________________________________________________________________________________________________              
                                           | 6| 7| 2| 7| 7| 7| 5| 7| 5| 4| 6| 7| 0| 0| 7| 2| 7| 2| 5| 7| 7| 4| 7| 7| 7|             
                             DAY ON TEST   | 1| 3| 0| 3| 3| 3| 6| 3| 0| 6| 0| 3| 8| 9| 3| 6| 3| 5| 5| 3| 3| 4| 3| 3| 3|             
                                           | 1| 1| 6| 6| 4| 4| 1| 0| 3| 1| 0| 0| 5| 0| 6| 7| 5| 6| 4| 4| 6| 4| 0| 1| 4|             
 _____________________________________________________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    500                                    | 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 6|             
    MG/KG                                  | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
      Inflammation, Chronic                |                                     1  2                                 |             
      Leukocytosis                         |                                                                          |             
      Alveolar Epithelium, Hyperplasia     |                                                                          |             
      Alveolus, Infiltration Cellular,     |                                                                          |             
           Histiocyte                      |          2                                                               |             
                                            __________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Inflammation, Chronic                |    1     3     2  1                       1     1                       1|             
      Glands, Hyperplasia, Glandular       |             2                                                            |             
      Nasolacrimal Duct, Hyperplasia       |                                                                          |             
      Olfactory Epithelium, Hyperplasia    |          2                    1                                          |             
                                            __________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Eye                                     |                                                                          |             
                                            __________________________________________________________________________|             
   Harderian Gland                         |                                                                   +      |             
      Hyperplasia                          |                                                                   4      |             
                                            __________________________________________________________________________|             
   Lacrimal Gland                          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |                                                                          |             
                                            __________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bacterium                            |                                                                          |             
      Cyst                                 |          3                                                           X  X|             
      Hydronephrosis                       |                                                                          |             
      Inflammation, Chronic Active         |          2                                         4     4  3            |             
      Mineralization                       | 1        1  1     1           1     1     1     1           1  1  1  1  1|             
      Nephropathy                          | 1  3  1  2  2  1     3  3     1  1        1     1     3  2  2     3  2  3|             
      Pelvis, Inflammation, Chronic        |    2     2           1                             2     2  2     2  1   |             
                                            __________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Dilatation                           |                      1           1                                       |             
      Inflammation, Chronic                |                         2                          2     3  3     2      |             
      Transitional Epithelium, Hyperplasia |                         1                          2     3  2     2      |             
 _____________________________________________________________________________________________________________________|             
                                                             Page 101                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 4| 4| 4| 7| 5| 1| 7| 5| 7| 4| 4| 7| 6| 4| 4| 7| 7| 4| 7|              |            |
                             DAY ON TEST   | 3| 6| 6| 6| 3| 6| 9| 3| 9| 3| 5| 6| 3| 2| 6| 6| 3| 3| 5| 3|              |            |
                                           | 0| 1| 1| 1| 4| 3| 1| 4| 9| 5| 4| 1| 6| 9| 1| 8| 0| 0| 4| 4|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    500                                    | 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  59        |
      Inflammation, Chronic                |                                                                          |      1  4.0|
      Inflammation, Subacute               |                                                                          |      1  2.0|
      Perforation                          |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +           M  +  M  +  +  +  +     +  A     A  +  +  +  +               |  53        |
      Dilatation                           |                                                    3                     |      2  3.0|
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +           +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +           +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +     +     +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  55        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +           +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  54        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +           +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  53        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +           +  +  +  +  +  +  +     +  A     A  +  +  A  +               |  54        |
      Lymphoid Tissue, Hyperplasia,        |                                                                          |            |
          Lymphoid                         |                                                                          |      1  1.0|
                                            __________________________________________________________________________|____________|
   Liver                                   | +           +  +  +  +  +  +  +     +  A     A  +  +  +  +               |  57        |
      Basophilic Focus                     |                                                                          |      1     |
      Fatty Change                         |                                                                          |      1  2.0|
      Hematopoietic Cell Proliferation     |                                                                          |      1  1.0|
      Inflammation, Acute                  |                                                                          |      1  1.0|
      Inflammation, Chronic Active         |                               3                                          |      1  3.0|
      Mixed Cell Focus                     |                                                                          |      1     |
      Necrosis                             |                                                    2                     |      2  2.0|
                                            __________________________________________________________________________|____________|
   Mesentery                               |                               +                    +                     |   2        |
      Inflammation, Chronic Active         |                               4                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Pancreas                                | +           +  +  +  +  +  +  +     +  A     +  +  +  +  +               |  57        |
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Inflammation, Chronic Active         |                               4                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  58        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +           +  +  +  +  +  +  +     +  A     A  +  +  +  +               |  56        |
      Cyst                                 |                            1                                             |      1  1.0|
      Hyperplasia, Squamous                |             2           3                          2     2               |     18  2.4|
      Ulcer                                |                         1                          1                     |      8  1.6|
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +           +  +  +  +  +  +  +     +  A     A  +  +  +  +               |  56        |
      Edema                                |                                                                          |      1  2.0|
      Erosion                              |                               2                                          |      1  2.0|
      Hyperplasia                          |                                                                          |      3  1.3|
                                            __________________________________________________________________________|____________|
   Tooth                                   | +           +           +  +                             +               |  23        |
      Abscess                              |                                                                          |      2  3.0|
      Dysplasia                            | 2           1           1  2                             2               |     23  1.7|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page 102                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 4| 4| 4| 7| 5| 1| 7| 5| 7| 4| 4| 7| 6| 4| 4| 7| 7| 4| 7|              |            |
                             DAY ON TEST   | 3| 6| 6| 6| 3| 6| 9| 3| 9| 3| 5| 6| 3| 2| 6| 6| 3| 3| 5| 3|              |            |
                                           | 0| 1| 1| 1| 4| 3| 1| 4| 9| 5| 4| 1| 6| 9| 1| 8| 0| 0| 4| 4|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    500                                    | 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
      Cardiomyopathy                       |                                                    1                     |      6  1.2|
      Inflammation, Chronic                |                                                                          |      3  1.7|
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  59        |
      Focal Cellular Change                |                                                                          |      1  1.0|
      Hyperplasia                          |                                                 2                        |      1  2.0|
      Hypertrophy                          |                                                                          |      3  1.0|
      Inflammation, Chronic                |                                                                          |      1  1.0|
      Capsule, Hyperplasia                 |             2  1     2     2        1  1        2  1  1  1               |     45  1.2|
      Capsule, Inflammation, Chronic Active|                               3                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  58        |
      Hyperplasia                          |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +           +  +  +  +  +  +  +     +  A     A  +  +  +  +               |  55        |
      Hyperplasia                          |                      1                                                   |      6  1.3|
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +           +  +  +  M  +  M  +     +  +     A  +  +  +  +               |  49        |
      Cyst                                 |                                                                          |      1     |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +           +  +  +  +  +  M  +     +  +     M  +  +  +  +               |  53        |
      Pars Distalis, Cyst                  |                                                 X                        |      2     |
      Pars Distalis, Hyperplasia           |             3                       1                                    |      4  1.8|
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  57        |
      Follicular Cell, Hyperplasia         | 1           2              3        1           2        2               |     27  1.7|
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +               |  69        |
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  59        |
      Atrophy                              | 3                                                  4  3                  |     17  2.2|
      Hyperplasia                          |                                                                          |      1  2.0|
      Inflammation, Chronic                |             1           1  1  2     1           1     2                  |     23  1.6|
      Inflammation, Chronic Active         |                                                                          |      1  4.0|
                                            __________________________________________________________________________|____________|
   Prostate                                | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
      Abscess                              |                                                                          |      1  4.0|
      Concretion                           |                                     2              2                     |      7  2.0|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page 103                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 4| 4| 4| 7| 5| 1| 7| 5| 7| 4| 4| 7| 6| 4| 4| 7| 7| 4| 7|              |            |
                             DAY ON TEST   | 3| 6| 6| 6| 3| 6| 9| 3| 9| 3| 5| 6| 3| 2| 6| 6| 3| 3| 5| 3|              |            |
                                           | 0| 1| 1| 1| 4| 3| 1| 4| 9| 5| 4| 1| 6| 9| 1| 8| 0| 0| 4| 4|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    500                                    | 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Congestion                           |                                                                          |      1  3.0|
      Hyperplasia                          |                                                                          |      1  1.0|
      Inflammation, Chronic                |                      2                                                   |      3  2.0|
      Inflammation, Chronic Active         |                                                                          |      2  2.0|
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +           +  +  +  +     +  +     +  +     +  +  +     +               |  57        |
      Hyperplasia                          |                                                                          |      2  2.0|
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +               |  69        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  58        |
      Proliferation                        |                                                                          |      6  1.5|
      Myeloid Cell, Proliferation          |                               3                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Lymph Node                              |                            +                       +                     |   2        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +           +  +  +  +  +  +  M     +  +     A  +  M  +  +               |  53        |
      Atrophy                              |                                                                          |      1  3.0|
      Congestion                           |                                                                          |      1  2.0|
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  54        |
      Angiectasis                          | 2                                                  2                     |      2  2.0|
      Atrophy                              |                                                                          |      1  3.0|
      Hyperplasia, Lymphoid                |                                                                          |      1  2.0|
      Inflammation, Chronic Active         |                               3                                          |      1  3.0|
                                            __________________________________________________________________________|____________|
   Spleen                                  | +           +  +  +  +  +  +  +     +  +     M  +  +  +  +               |  59        |
      Lymphoid Follicle, Atrophy           | 2              3                                   1  2                  |      7  2.1|
      Lymphoid Follicle, Hyperplasia,      |                                                                          |            |
          Lymphoid                         |             1                                                            |      5  1.6|
      Red Pulp, Atrophy                    |                                                                          |      1  1.0|
      Red Pulp, Hematopoietic Cell         |                                                                          |            |
          Proliferation                    |                            2  3                                          |     13  2.2|
                                            __________________________________________________________________________|____________|
   Thymus                                  | +           +  +  +  +  +  +  M     +  +     A  +  +  +  +               |  52        |
      Cyst                                 | X                    X                                                   |      4     |
      Ectopic Parathyroid Gland            | X                                                                        |      1     |
      Inflammation, Chronic                |                                                                          |      1  3.0|
      Necrosis                             | 3                                                                        |      1  3.0|
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | M           +  +  +  +  +  +  +     M  +     +  M  M  +  M               |  40        |
                                            __________________________________________________________________________|____________|
   Skin                                    | +        +  +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  61        |
      Subcutaneous Tissue, Abscess         |                                                                          |      1  1.0|
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page 104                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 4| 4| 4| 7| 5| 1| 7| 5| 7| 4| 4| 7| 6| 4| 4| 7| 7| 4| 7|              |            |
                             DAY ON TEST   | 3| 6| 6| 6| 3| 6| 9| 3| 9| 3| 5| 6| 3| 2| 6| 6| 3| 3| 5| 3|              |            |
                                           | 0| 1| 1| 1| 4| 3| 1| 4| 9| 5| 4| 1| 6| 9| 1| 8| 0| 0| 4| 4|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    500                                    | 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |            |
                                           |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
                                            __________________________________________________________________________|____________|
   Skeletal Muscle                         | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
      Degeneration                         |                            1           1                                 |      7  1.0|
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  59        |
      Mineralization                       | 1                 1     1  1        1                    2               |     23  1.0|
                                            __________________________________________________________________________|____________|
   Peripheral Nerve                        | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
                                            __________________________________________________________________________|____________|
   Spinal Cord                             | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  59        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lung                                    | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  59        |
      Congestion                           |                                                                          |      1  3.0|
      Hemorrhage                           |                                                 1                        |      6  1.2|
      Inflammation, Chronic                |                                                                          |      3  1.7|
      Leukocytosis                         |                               2                                          |      1  2.0|
      Alveolar Epithelium, Hyperplasia     |                                                                          |      1  1.0|
      Alveolus, Infiltration Cellular,     |                                                                          |            |
           Histiocyte                      |                                                                          |      2  1.5|
                                            __________________________________________________________________________|____________|
   Nose                                    | +           +  +  +  +  +  +  +     +  A     +  +  +  +  +               |  58        |
      Inflammation, Chronic                |             1        2     1        1           1        1               |     13  1.3|
      Glands, Hyperplasia, Glandular       |                                                                          |      1  2.0|
      Nasolacrimal Duct, Hyperplasia       |                            2                                             |      3  2.3|
      Olfactory Epithelium, Hyperplasia    |                                                                          |      2  1.5|
                                            __________________________________________________________________________|____________|
   Trachea                                 | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  59        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Eye                                     |                                                 +                        |   1        |
                                            __________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   2        |
      Hyperplasia                          |                                                                          |      2  3.0|
                                            __________________________________________________________________________|____________|
   Lacrimal Gland                          |                                                       +                  |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +           +  +  +  +  +  +  +     +  +     +  +  +  +  +               |  60        |
      Bacterium                            |                                              2                           |      1  2.0|
      Cyst                                 |                      X     X                             X               |      7  3.0|
      Hydronephrosis                       |                      3                                                   |      1  3.0|
      Inflammation, Chronic Active         |                                                                          |      6  3.2|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page 105                                                               
NTP Experiment-Test: 05214-02                  NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL                         Report: PEIRPT09
Study Type: CHRONIC                                 TRANS-DELTA-9-TETRAHYDROCANNABINOL                            Date: 10/21/96  
Route: GAVAGE                                                                                                     Time: 15:13:29  
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 4| 4| 4| 7| 5| 1| 7| 5| 7| 4| 4| 7| 6| 4| 4| 7| 7| 4| 7|              |            |
                             DAY ON TEST   | 3| 6| 6| 6| 3| 6| 9| 3| 9| 3| 5| 6| 3| 2| 6| 6| 3| 3| 5| 3|              |            |
                                           | 0| 1| 1| 1| 4| 3| 1| 4| 9| 5| 4| 1| 6| 9| 1| 8| 0| 0| 4| 4|              |      T (*) |
 _____________________________________________________________________________________________________________________|            |
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      O     |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|              |      T     |
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|              |      A     |
    500                                    | 6| 6| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8|              |      L     |
    MG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|              |            |
 __________________________________________________________________________________________________________________________________ 
 URINARY SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Mineralization                       | 1           1  2        1  1  1     1                    1               |     32  1.0|
      Nephropathy                          | 2           1        4     2  2     1           1  3     2               |     42  1.8|
      Pelvis, Inflammation, Chronic        |                      1                       4                           |     12  2.0|
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +           +  +  +  +  +  +  +     +  +     A  +  +  +  +               |  58        |
      Dilatation                           | 3                                      3        4  4                     |      7  2.9|
      Inflammation, Chronic                |                               2                                          |      9  2.2|
      Transitional Epithelium, Hyperplasia |                                                                          |      8  1.9|
 __________________________________________________________________________________________________________________________________ 
  * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade                         
  + : Tissue examined microscopically                M : Missing tissue                        1-4 : Lesion qualified as:           
  X : Lesion present but not qualified               A : Autolysis precludes examination               1) Minimal  3) Moderate      
  I : Insufficient tissue                        BLANK : Not examined                                  2) Mild     4) Marked        
                                                             Page 106                                                               
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