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TDMS Study 96021-01 Pathology Tables

NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03
Route: GAVAGE                                                                                                     Time: 11:03:02

                                                          FINAL#4 RATS




       Facility:  Battelle Columbus Laboratory

       Chemical CAS #:  35065-27-1

       Lock Date:  01/16/02

       Cage Range:  All

       Reasons For Removal:    25018 Dosing Accident                   25019 Moribund Sacrifice
                               25020 Natural Death                     25021 Terminal Sacrifice

       Removal Date Range:     All

       Treatment Groups:       Include All

































Note:  Animals arranged according to CID number

                                                              Page   1


NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 3| 7| 5| 7| 5| 7| 6| 5| 5| 7| 7| 6| 6| 4| 7| 6| 7| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 0| 9| 3| 0| 0| 7| 3| 1| 5| 5| 3| 3| 7| 4| 3| 3| 9| 3| 1| 0| 3| 3| 3|             
                                           | 1| 2| 8| 9| 1| 2| 1| 1| 2| 3| 5| 1| 2| 2| 2| 4| 7| 3| 6| 1| 8| 1| 3| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4| 5| 5| 5|             
                                           | 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4| 5| 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leiomyoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Lymphoma Malignant                   |                      X                                                   |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |    +           +                 +  +  +     +        +     +     +  +  +|             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |    +           +        +  +     +  +  +  +  +        +     +  +     +  +|             
      Peridontal Tissue, Neurofibrosarcoma |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Aorta, Hemangiosarcoma, Metastatic,  |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   2                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 3| 7| 5| 7| 5| 7| 6| 5| 5| 7| 7| 6| 6| 4| 7| 6| 7| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 0| 9| 3| 0| 0| 7| 3| 1| 5| 5| 3| 3| 7| 4| 3| 3| 9| 3| 1| 0| 3| 3| 3|             
                                           | 1| 2| 8| 9| 1| 2| 1| 1| 2| 3| 5| 1| 2| 2| 2| 4| 7| 3| 6| 1| 8| 1| 3| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4| 5| 5| 5|             
                                           | 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4| 5| 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4|             
 __________________________________________|__________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
           Heart                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma                      |                                                                          |             
      Lymphoma Malignant                   |                      X                                                   |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Malignant           |       X                                                                  |             
      Pheochromocytoma Benign              |    X              X                                                      |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              | X                                                                        |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  M  +  +  +  +  +  +  +  +  +  M  +  +  +  M  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |             
      Pars Distalis, Adenoma               | X                       X           X  X  X              X     X         |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +|             
      Bilateral, C-Cell, Adenoma           |                                        X                                 |             
      C-Cell, Adenoma                      |    X              X           X     X              X     X     X        X|             
      C-Cell, Carcinoma                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   3                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 3| 7| 5| 7| 5| 7| 6| 5| 5| 7| 7| 6| 6| 4| 7| 6| 7| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 0| 9| 3| 0| 0| 7| 3| 1| 5| 5| 3| 3| 7| 4| 3| 3| 9| 3| 1| 0| 3| 3| 3|             
                                           | 1| 2| 8| 9| 1| 2| 1| 1| 2| 3| 5| 1| 2| 2| 2| 4| 7| 3| 6| 1| 8| 1| 3| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4| 5| 5| 5|             
                                           | 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4| 5| 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cystadenoma                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Polyp Stromal                        |                                        X                       X  X  X   |             
      Polyp Stromal, Multiple              |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                                                          |             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lipoma                               |                                                          X               |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |          +                       +                          +            |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Lymphoma Malignant                   |                      X                                                   |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  M  +  +  +  +  +  M  +  +|             
      Hemangiosarcoma, Metastatic, Heart   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                      X   |             
      Adenoma, Multiple                    |                                                                          |             
      Carcinoma                            |    X  X                                                  X               |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   4                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 3| 7| 5| 7| 5| 7| 6| 5| 5| 7| 7| 6| 6| 4| 7| 6| 7| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 0| 9| 3| 0| 0| 7| 3| 1| 5| 5| 3| 3| 7| 4| 3| 3| 9| 3| 1| 0| 3| 3| 3|             
                                           | 1| 2| 8| 9| 1| 2| 1| 1| 2| 3| 5| 1| 2| 2| 2| 4| 7| 3| 6| 1| 8| 1| 3| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4| 5| 5| 5|             
                                           | 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4| 5| 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4|             
 __________________________________________|__________________________________________________________________________|             
 INTEGUMENTARY SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Fibroadenoma                         |       X  X     X              X              X           X  X  X     X  X|             
      Fibroadenoma, Multiple               | X           X     X     X  X     X  X  X  X        X  X           X      |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Vagina                          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                      X                                                   |             
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                   X                                                      |             
      Lymphoma Malignant                   |                      X                                                   |             
      Mediastinum, Hemangiosarcoma,        |                                                                          |             
          Metastatic, Heart                |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   5                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 3| 7| 5| 7| 5| 7| 6| 5| 5| 7| 7| 6| 6| 4| 7| 6| 7| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 0| 9| 3| 0| 0| 7| 3| 1| 5| 5| 3| 3| 7| 4| 3| 3| 9| 3| 1| 0| 3| 3| 3|             
                                           | 1| 2| 8| 9| 1| 2| 1| 1| 2| 3| 5| 1| 2| 2| 2| 4| 7| 3| 6| 1| 8| 1| 3| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4| 5| 5| 5|             
                                           | 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4| 5| 1| 2| 3| 4| 5| 1| 2| 4| 5| 1| 2| 4|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                      X                                                   |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Lymphoma Malignant                   |                      X                                                   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   6                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 7| 5| 5| 4| 7| 5| 7| 6| 7| 6| 7| 7| 7| 5| 2| 4| 7| 6| 6| 6|             
                             DAY ON TEST   | 3| 3| 5| 1| 3| 3| 0| 5| 1| 3| 9| 3| 9| 3| 0| 3| 3| 3| 5| 1| 4| 3| 4| 2| 1|             
                                           | 1| 1| 6| 3| 2| 1| 7| 7| 0| 2| 0| 1| 6| 3| 3| 2| 3| 1| 5| 1| 2| 2| 1| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9|             
                                           | 5| 7| 8| 9| 0| 1| 3| 4| 5| 6| 7| 0| 1| 2| 3| 4| 5| 6| 7| 8| 0| 1| 3| 5| 1|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leiomyoma                            |                X                                                         |             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                  X                                       |             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             | +  +  +              +        +  +  +  +  +              +               |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   | +  +  +  +        +  +     +  +  +  +  +  +  +        +  +     +  +  +   |             
      Peridontal Tissue, Neurofibrosarcoma |                      X                                                   |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Aorta, Hemangiosarcoma, Metastatic,  |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   7                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 7| 5| 5| 4| 7| 5| 7| 6| 7| 6| 7| 7| 7| 5| 2| 4| 7| 6| 6| 6|             
                             DAY ON TEST   | 3| 3| 5| 1| 3| 3| 0| 5| 1| 3| 9| 3| 9| 3| 0| 3| 3| 3| 5| 1| 4| 3| 4| 2| 1|             
                                           | 1| 1| 6| 3| 2| 1| 7| 7| 0| 2| 0| 1| 6| 3| 3| 2| 3| 1| 5| 1| 2| 2| 1| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9|             
                                           | 5| 7| 8| 9| 0| 1| 3| 4| 5| 6| 7| 0| 1| 2| 3| 4| 5| 6| 7| 8| 0| 1| 3| 5| 1|             
 __________________________________________|__________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
           Heart                           |                                                             X            |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma                      |                                                             X            |             
      Lymphoma Malignant                   |                                  X                                       |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Malignant           |                                                                          |             
      Pheochromocytoma Benign              |                                                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                      X                                                   |             
      Pars Distalis, Adenoma               |    X  X        X                    X  X  X     X        X        X      |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bilateral, C-Cell, Adenoma           |                                                 X                        |             
      C-Cell, Adenoma                      |    X  X                       X  X                                X      |             
      C-Cell, Carcinoma                    |             X              X                                             |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   8                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 7| 5| 5| 4| 7| 5| 7| 6| 7| 6| 7| 7| 7| 5| 2| 4| 7| 6| 6| 6|             
                             DAY ON TEST   | 3| 3| 5| 1| 3| 3| 0| 5| 1| 3| 9| 3| 9| 3| 0| 3| 3| 3| 5| 1| 4| 3| 4| 2| 1|             
                                           | 1| 1| 6| 3| 2| 1| 7| 7| 0| 2| 0| 1| 6| 3| 3| 2| 3| 1| 5| 1| 2| 2| 1| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9|             
                                           | 5| 7| 8| 9| 0| 1| 3| 4| 5| 6| 7| 0| 1| 2| 3| 4| 5| 6| 7| 8| 0| 1| 3| 5| 1|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cystadenoma                          |             X                                                            |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +     +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Polyp Stromal                        |                               X     X                                    |             
      Polyp Stromal, Multiple              | X                                                                        |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                     +                                    |             
      Schwannoma Malignant                 |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lipoma                               |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                  X                                       |             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  M  +  M  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma, Metastatic, Heart   |                                                             X            |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Adenoma, Multiple                    |                                  X                                       |             
      Carcinoma                            |    X                       X     X  X                                    |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   9                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 7| 5| 5| 4| 7| 5| 7| 6| 7| 6| 7| 7| 7| 5| 2| 4| 7| 6| 6| 6|             
                             DAY ON TEST   | 3| 3| 5| 1| 3| 3| 0| 5| 1| 3| 9| 3| 9| 3| 0| 3| 3| 3| 5| 1| 4| 3| 4| 2| 1|             
                                           | 1| 1| 6| 3| 2| 1| 7| 7| 0| 2| 0| 1| 6| 3| 3| 2| 3| 1| 5| 1| 2| 2| 1| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9|             
                                           | 5| 7| 8| 9| 0| 1| 3| 4| 5| 6| 7| 0| 1| 2| 3| 4| 5| 6| 7| 8| 0| 1| 3| 5| 1|             
 __________________________________________|__________________________________________________________________________|             
 INTEGUMENTARY SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Fibroadenoma                         |    X                    X  X                 X     X  X     X  X     X  X|             
      Fibroadenoma, Multiple               |       X  X        X           X  X              X                        |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Vagina                          |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
      Neurofibrosarcoma, Metastatic, Tooth |                      X                                                   |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                                                                          |             
      Lymphoma Malignant                   |                                  X                                       |             
      Mediastinum, Hemangiosarcoma,        |                                                                          |             
          Metastatic, Heart                |                                                             X            |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                      X                                                   |             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neurofibrosarcoma, Metastatic, Tooth |                      X                                                   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  10                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 7| 5| 5| 4| 7| 5| 7| 6| 7| 6| 7| 7| 7| 5| 2| 4| 7| 6| 6| 6|             
                             DAY ON TEST   | 3| 3| 5| 1| 3| 3| 0| 5| 1| 3| 9| 3| 9| 3| 0| 3| 3| 3| 5| 1| 4| 3| 4| 2| 1|             
                                           | 1| 1| 6| 3| 2| 1| 7| 7| 0| 2| 0| 1| 6| 3| 3| 2| 3| 1| 5| 1| 2| 2| 1| 1| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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 UG/KG                                | 5| 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9|             
                                           | 5| 7| 8| 9| 0| 1| 3| 4| 5| 6| 7| 0| 1| 2| 3| 4| 5| 6| 7| 8| 0| 1| 3| 5| 1|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                  X                                       |             
      Lymphoma Malignant                   |                                  X                                       |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  11                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 7|                                                                 |            |
                             DAY ON TEST   | 6| 3| 3|                                                                 |            |
                                           | 4| 1| 2|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 0| 0| 0|                                                                 |     A      |
    0 UG/KG                                | 9| 9| 9|                                                                 |     L      |
                                           | 3| 5| 7|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +                                                                  |  53        |
      Leiomyoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +                                                                  |  52        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +                                                                  |  53        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             |                                                                          |  21        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +                                                                  |  51        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   | +  +                                                                     |  34        |
      Peridontal Tissue, Neurofibrosarcoma |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  12                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 7|                                                                 |            |
                             DAY ON TEST   | 6| 3| 3|                                                                 |            |
                                           | 4| 1| 2|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 0| 0| 0|                                                                 |     A      |
    0 UG/KG                                | 9| 9| 9|                                                                 |     L      |
                                           | 3| 5| 7|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Blood Vessel                            | +  +  +                                                                  |  52        |
      Aorta, Hemangiosarcoma, Metastatic,  |                                                                          |            |
           Heart                           |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +                                                                  |  52        |
      Hemangiosarcoma                      |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +                                                                  |  53        |
      Pheochromocytoma Malignant           |                                                                          |          1 |
      Pheochromocytoma Benign              |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +                                                                  |  49        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +                                                                  |  53        |
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |          1 |
      Pars Distalis, Adenoma               | X     X                                                                  |         18 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +                                                                  |  51        |
      Bilateral, C-Cell, Adenoma           |                                                                          |          2 |
      C-Cell, Adenoma                      |       X                                                                  |         14 |
      C-Cell, Carcinoma                    |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                             Page  13                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 7|                                                                 |            |
                             DAY ON TEST   | 6| 3| 3|                                                                 |            |
                                           | 4| 1| 2|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 0| 0| 0|                                                                 |     A      |
    0 UG/KG                                | 9| 9| 9|                                                                 |     L      |
                                           | 3| 5| 7|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +                                                                  |  53        |
      Cystadenoma                          |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  +  +                                                                  |  50        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +                                                                  |  53        |
      Polyp Stromal                        |                                                                          |          6 |
      Polyp Stromal, Multiple              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   1        |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +                                                                  |  53        |
      Lipoma                               |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   3        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +                                                                  |  51        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +                                                                  |  52        |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +                                                                  |  53        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +                                                                  |  48        |
      Hemangiosarcoma, Metastatic, Heart   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  14                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 7|                                                                 |            |
                             DAY ON TEST   | 6| 3| 3|                                                                 |            |
                                           | 4| 1| 2|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 0| 0| 0|                                                                 |     A      |
    0 UG/KG                                | 9| 9| 9|                                                                 |     L      |
                                           | 3| 5| 7|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          1 |
      Adenoma, Multiple                    |                                                                          |          1 |
      Carcinoma                            |       X                                                                  |          8 |
      Fibroadenoma                         |    X  X                                                                  |         22 |
      Fibroadenoma, Multiple               | X                                                                        |         19 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +                                                                  |  53        |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Vagina                          |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +                                                                  |  52        |
      Alveolar/Bronchiolar Adenoma         |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          2 |
      Mediastinum, Hemangiosarcoma,        |                                                                          |            |
          Metastatic, Heart                |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +                                                                  |  52        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  15                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 7|                                                                 |            |
                             DAY ON TEST   | 6| 3| 3|                                                                 |            |
                                           | 4| 1| 2|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 0| 0| 0|                                                                 |     A      |
    0 UG/KG                                | 9| 9| 9|                                                                 |     L      |
                                           | 3| 5| 7|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +                                                                  |  53        |
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +                                                                  |  53        |
      Neurofibrosarcoma, Metastatic, Tooth |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +                                                                  |  53        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +                                                                  |  53        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          2 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  16                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 6| 5| 3| 6| 6| 5| 6| 3| 2| 6| 2| 5| 7| 4| 4| 7| 7| 6| 7| 7| 3| 7|             
                             DAY ON TEST   | 3| 6| 9| 1| 2| 5| 2| 3| 0| 2| 1| 5| 1| 6| 0| 3| 7| 7| 3| 3| 2| 3| 3| 9| 3|             
                                           | 3| 3| 6| 3| 7| 2| 4| 7| 2| 4| 0| 0| 6| 1| 7| 2| 9| 9| 1| 1| 4| 1| 3| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 4| 6| 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |                +        +           +              +  +        +         |             
      Gingival, Squamous Cell Carcinoma    |                                     X                 X                  |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |                         +           +  +           +  +        +         |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant                 |                                                          X               |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  17                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 6| 5| 3| 6| 6| 5| 6| 3| 2| 6| 2| 5| 7| 4| 4| 7| 7| 6| 7| 7| 3| 7|             
                             DAY ON TEST   | 3| 6| 9| 1| 2| 5| 2| 3| 0| 2| 1| 5| 1| 6| 0| 3| 7| 7| 3| 3| 2| 3| 3| 9| 3|             
                                           | 3| 3| 6| 3| 7| 2| 4| 7| 2| 4| 0| 0| 6| 1| 7| 2| 9| 9| 1| 1| 4| 1| 3| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 4| 6| 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Malignant           |                                                                   X      |             
      Pheochromocytoma Benign              |                                                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  M  M  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                     X                                    |             
      Pars Distalis, Adenoma               | X        X              X  X                 X                 X        X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bilateral, C-Cell, Adenoma           |                                                       X     X  X         |             
      C-Cell, Adenoma                      |             X                                            X        X     X|             
      C-Cell, Carcinoma                    | X                                                                        |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Tissue NOS                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  M  +  M  +  M  M  M  +  M  M  +  +  +  +  +  +  +  +  +  M  +  +  M  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |       X                                                                  |             
      Polyp Stromal                        |          X           X                                         X        X|             
      Schwannoma Malignant                 |                         X                                                |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  18                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 6| 5| 3| 6| 6| 5| 6| 3| 2| 6| 2| 5| 7| 4| 4| 7| 7| 6| 7| 7| 3| 7|             
                             DAY ON TEST   | 3| 6| 9| 1| 2| 5| 2| 3| 0| 2| 1| 5| 1| 6| 0| 3| 7| 7| 3| 3| 2| 3| 3| 9| 3|             
                                           | 3| 3| 6| 3| 7| 2| 4| 7| 2| 4| 0| 0| 6| 1| 7| 2| 9| 9| 1| 1| 4| 1| 3| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 4| 6| 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cervix, Squamous Cell Carcinoma      |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  | +                                      +                                 |             
      Fibrosarcoma                         | X                                      X                                 |             
      Sarcoma                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                           +                              |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                X                                               X         |             
      Fibroadenoma                         |             X                 X                 X        X  X        X  X|             
      Fibroadenoma, Multiple               |    X     X        X                       X  X        X        X         |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma                 |       X                                                                  |             
      Fibrosarcoma                         |                               X                                          |             
      Keratoacanthoma                      |                                                                X         |             
      Sarcoma                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  19                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 6| 5| 3| 6| 6| 5| 6| 3| 2| 6| 2| 5| 7| 4| 4| 7| 7| 6| 7| 7| 3| 7|             
                             DAY ON TEST   | 3| 6| 9| 1| 2| 5| 2| 3| 0| 2| 1| 5| 1| 6| 0| 3| 7| 7| 3| 3| 2| 3| 3| 9| 3|             
                                           | 3| 3| 6| 3| 7| 2| 4| 7| 2| 4| 0| 0| 6| 1| 7| 2| 9| 9| 1| 1| 4| 1| 3| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 4| 6| 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                X                                                         |             
      Carcinoma, Metastatic, Oral Mucosa   |                                     X                                    |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Stromal Nephroma                     |                                                    X                     |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  20                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 3| 7| 4| 6| 7| 7| 6| 5| 7| 7| 7| 6| 5| 7| 7| 7| 6| 2| 7| 3| 5| 3| 4| 7| 5|             
                             DAY ON TEST   | 6| 3| 0| 4| 3| 3| 2| 2| 0| 3| 3| 7| 5| 3| 3| 3| 0| 5| 0| 3| 4| 1| 3| 3| 0|             
                                           | 0| 1| 5| 7| 2| 3| 2| 8| 1| 1| 1| 5| 7| 1| 1| 1| 0| 0| 1| 1| 5| 0| 8| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 6| 7| 7| 7| 7| 8| 8| 8|             
                                           | 1| 2| 3| 4| 5| 8| 9| 0| 6| 7| 8| 9| 0| 2| 3| 4| 5| 6| 6| 7| 8| 9| 0| 1| 2|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |          +              +           +     +                    +  +      |             
      Gingival, Squamous Cell Carcinoma    |                                                                          |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |          +              +     +     +     +                    +  +      |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  21                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 3| 7| 4| 6| 7| 7| 6| 5| 7| 7| 7| 6| 5| 7| 7| 7| 6| 2| 7| 3| 5| 3| 4| 7| 5|             
                             DAY ON TEST   | 6| 3| 0| 4| 3| 3| 2| 2| 0| 3| 3| 7| 5| 3| 3| 3| 0| 5| 0| 3| 4| 1| 3| 3| 0|             
                                           | 0| 1| 5| 7| 2| 3| 2| 8| 1| 1| 1| 5| 7| 1| 1| 1| 0| 0| 1| 1| 5| 0| 8| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 6| 7| 7| 7| 7| 8| 8| 8|             
                                           | 1| 2| 3| 4| 5| 8| 9| 0| 6| 7| 8| 9| 0| 2| 3| 4| 5| 6| 6| 7| 8| 9| 0| 1| 2|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Malignant           |                                                                          |             
      Pheochromocytoma Benign              |    X                                                                     |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |             
      Pars Distalis, Adenoma               |    X     X     X  X     X  X  X     X  X        X     X              X   |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
      Bilateral, C-Cell, Adenoma           |                                              X                           |             
      C-Cell, Adenoma                      |    X                       X              X                       X  X   |             
      C-Cell, Carcinoma                    |             X                                                            |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Tissue NOS                              |                               +                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  M  M  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  M  +  +  M  M  M  +  +  +  +  +  +  M  M  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Polyp Stromal                        |             X                             X     X                    X   |             
      Schwannoma Malignant                 |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  22                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 3| 7| 4| 6| 7| 7| 6| 5| 7| 7| 7| 6| 5| 7| 7| 7| 6| 2| 7| 3| 5| 3| 4| 7| 5|             
                             DAY ON TEST   | 6| 3| 0| 4| 3| 3| 2| 2| 0| 3| 3| 7| 5| 3| 3| 3| 0| 5| 0| 3| 4| 1| 3| 3| 0|             
                                           | 0| 1| 5| 7| 2| 3| 2| 8| 1| 1| 1| 5| 7| 1| 1| 1| 0| 0| 1| 1| 5| 0| 8| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 6| 7| 7| 7| 7| 8| 8| 8|             
                                           | 1| 2| 3| 4| 5| 8| 9| 0| 6| 7| 8| 9| 0| 2| 3| 4| 5| 6| 6| 7| 8| 9| 0| 1| 2|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cervix, Squamous Cell Carcinoma      |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                  +                                       |             
      Fibrosarcoma                         |                                                                          |             
      Sarcoma                              |                                  X                                       |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                      +                                                   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                      X              X              X                     |             
      Fibroadenoma                         | X  X     X  X  X  X  X     X        X     X     X        X  X     X      |             
      Fibroadenoma, Multiple               |                         X     X        X     X                 X         |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma                 |                                                                          |             
      Fibrosarcoma                         |                                                                          |             
      Keratoacanthoma                      |                                                                          |             
      Sarcoma                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  23                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 3| 7| 4| 6| 7| 7| 6| 5| 7| 7| 7| 6| 5| 7| 7| 7| 6| 2| 7| 3| 5| 3| 4| 7| 5|             
                             DAY ON TEST   | 6| 3| 0| 4| 3| 3| 2| 2| 0| 3| 3| 7| 5| 3| 3| 3| 0| 5| 0| 3| 4| 1| 3| 3| 0|             
                                           | 0| 1| 5| 7| 2| 3| 2| 8| 1| 1| 1| 5| 7| 1| 1| 1| 0| 0| 1| 1| 5| 0| 8| 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|             
   SPRAGUE-DAWLEY RATS 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   | 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|             
    10 UG/KG                               | 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 5| 5| 5| 5| 5| 6| 7| 7| 7| 7| 8| 8| 8|             
                                           | 1| 2| 3| 4| 5| 8| 9| 0| 6| 7| 8| 9| 0| 2| 3| 4| 5| 6| 6| 7| 8| 9| 0| 1| 2|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                                                                          |             
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Stromal Nephroma                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  24                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 5| 3| 2| 4|                                                              |            |
                             DAY ON TEST   | 9| 5| 6| 7|                                                              |            |
                                           | 0| 2| 1| 9|                                                              |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0|                                                              |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0| 0|                                                              |     T      |
                               ANIMAL ID   | 1| 1| 1| 1|                                                              |     A      |
    10 UG/KG                               | 8| 8| 8| 8|                                                              |     L      |
                                           | 3| 4| 5| 6|                                                              |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             |                                                                          |  12        |
      Gingival, Squamous Cell Carcinoma    |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +                                                               |  52        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                                                          |  13        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Blood Vessel                            | +  +  +  +                                                               |  54        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  25                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 5| 3| 2| 4|                                                              |            |
                             DAY ON TEST   | 9| 5| 6| 7|                                                              |            |
                                           | 0| 2| 1| 9|                                                              |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0|                                                              |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0| 0|                                                              |     T      |
                               ANIMAL ID   | 1| 1| 1| 1|                                                              |     A      |
    10 UG/KG                               | 8| 8| 8| 8|                                                              |     L      |
                                           | 3| 4| 5| 6|                                                              |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +                                                               |  54        |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +                                                               |  54        |
      Pheochromocytoma Malignant           |                                                                          |          1 |
      Pheochromocytoma Benign              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  M  +                                                               |  46        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +                                                               |  54        |
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |          1 |
      Pars Distalis, Adenoma               |                                                                          |         19 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +                                                               |  52        |
      Bilateral, C-Cell, Adenoma           |                                                                          |          4 |
      C-Cell, Adenoma                      |                                                                          |          9 |
      C-Cell, Carcinoma                    |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Tissue NOS                              |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +                                                               |  51        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  26                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 5| 3| 2| 4|                                                              |            |
                             DAY ON TEST   | 9| 5| 6| 7|                                                              |            |
                                           | 0| 2| 1| 9|                                                              |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0|                                                              |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0| 0|                                                              |     T      |
                               ANIMAL ID   | 1| 1| 1| 1|                                                              |     A      |
    10 UG/KG                               | 8| 8| 8| 8|                                                              |     L      |
                                           | 3| 4| 5| 6|                                                              |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Carcinoma                            |          X                                                               |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +                                                               |  53        |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  +  +  +                                                               |  38        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +                                                               |  54        |
      Carcinoma                            |                                                                          |          1 |
      Polyp Stromal                        | X                                                                        |          9 |
      Schwannoma Malignant                 |                                                                          |          1 |
      Cervix, Squamous Cell Carcinoma      |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   3        |
      Fibrosarcoma                         |                                                                          |          2 |
      Sarcoma                              |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |    +                                                                     |   3        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +                                                               |  52        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +                                                               |  53        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  27                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 5| 3| 2| 4|                                                              |            |
                             DAY ON TEST   | 9| 5| 6| 7|                                                              |            |
                                           | 0| 2| 1| 9|                                                              |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0|                                                              |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0| 0|                                                              |     T      |
                               ANIMAL ID   | 1| 1| 1| 1|                                                              |     A      |
    10 UG/KG                               | 8| 8| 8| 8|                                                              |     L      |
                                           | 3| 4| 5| 6|                                                              |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
   Mammary Gland                           | +  +  +  +                                                               |  54        |
      Carcinoma                            |    X                                                                     |          6 |
      Fibroadenoma                         |                                                                          |         21 |
      Fibroadenoma, Multiple               | X                                                                        |         13 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +                                                               |  54        |
      Basal Cell Carcinoma                 |                                                                          |          1 |
      Fibrosarcoma                         |                                                                          |          1 |
      Keratoacanthoma                      |                                                                          |          1 |
      Sarcoma                              |       X                                                                  |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +                                                               |  54        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +                                                               |  54        |
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +                                                               |  54        |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +                                                               |  54        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  28                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 5| 3| 2| 4|                                                              |            |
                             DAY ON TEST   | 9| 5| 6| 7|                                                              |            |
                                           | 0| 2| 1| 9|                                                              |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0|                                                              |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0| 0|                                                              |     T      |
                               ANIMAL ID   | 1| 1| 1| 1|                                                              |     A      |
    10 UG/KG                               | 8| 8| 8| 8|                                                              |     L      |
                                           | 3| 4| 5| 6|                                                              |            |
 _____________________________________________________________________________________________________________________|____________|
 SPECIAL SENSES SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
   Eye                                     | +  +  +  +                                                               |  54        |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +  +                                                               |  54        |
      Carcinoma, Metastatic, Oral Mucosa   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +                                                               |  54        |
      Stromal Nephroma                     |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +                                                               |  53        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +                                                               |  54        |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  29                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 5| 5| 4| 6| 7| 6| 7| 5| 6| 4| 7| 7| 5| 7| 7| 7| 7| 7| 5| 7| 5|             
                             DAY ON TEST   | 3| 3| 3| 3| 1| 3| 4| 8| 3| 5| 3| 5| 7| 1| 3| 3| 0| 0| 3| 0| 3| 3| 9| 3| 1|             
                                           | 3| 2| 2| 2| 4| 0| 3| 3| 1| 6| 2| 3| 4| 8| 2| 3| 1| 1| 1| 0| 3| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 1| 2| 3| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 7| 8| 9| 0| 6| 8|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Mesentery                               |                                                                +         |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |             +           +  +     +     +     +        +     +            |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |             +  +     +  +        +     +  +  +        +     +  +         |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  30                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 5| 5| 4| 6| 7| 6| 7| 5| 6| 4| 7| 7| 5| 7| 7| 7| 7| 7| 5| 7| 5|             
                             DAY ON TEST   | 3| 3| 3| 3| 1| 3| 4| 8| 3| 5| 3| 5| 7| 1| 3| 3| 0| 0| 3| 0| 3| 3| 9| 3| 1|             
                                           | 3| 2| 2| 2| 4| 0| 3| 3| 1| 6| 2| 3| 4| 8| 2| 3| 1| 1| 1| 0| 3| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 1| 2| 3| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 7| 8| 9| 0| 6| 8|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                X         |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  M  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               | X                    X        X     X                    X  X            |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |                   X                 X     X  X     X           X     X   |             
      C-Cell, Carcinoma                    |                         X                                                |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                   X                                                      |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Benign          | X                                                                        |             
      Granulosa-Theca Tumor Benign         |                                                                          |             
      Schwannoma Malignant                 |                                                    X                     |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  M  +  M  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Polyp Stromal                        |                X        X                 X                              |             
      Squamous Cell Carcinoma              |       X                                                                  |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  31                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 5| 5| 4| 6| 7| 6| 7| 5| 6| 4| 7| 7| 5| 7| 7| 7| 7| 7| 5| 7| 5|             
                             DAY ON TEST   | 3| 3| 3| 3| 1| 3| 4| 8| 3| 5| 3| 5| 7| 1| 3| 3| 0| 0| 3| 0| 3| 3| 9| 3| 1|             
                                           | 3| 2| 2| 2| 4| 0| 3| 3| 1| 6| 2| 3| 4| 8| 2| 3| 1| 1| 1| 0| 3| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 1| 2| 3| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 7| 8| 9| 0| 6| 8|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cervix, Carcinoma                    |                                                                          |             
      Cervix, Schwannoma Malignant         |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                                                          |             
      Squamous Cell Carcinoma              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                 +  +                     |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |                   X  X                                                   |             
      Fibroadenoma                         |          X  X  X     X  X  X           X  X  X  X           X        X   |             
      Fibroadenoma, Multiple               | X  X                                               X           X        X|             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibroma                              |                                                                   X      |             
      Fibrous Histiocytoma                 |                            X                                             |             
      Lipoma                               |                                                                          |             
      Subcutaneous Tissue, Sarcoma         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  32                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 5| 5| 4| 6| 7| 6| 7| 5| 6| 4| 7| 7| 5| 7| 7| 7| 7| 7| 5| 7| 5|             
                             DAY ON TEST   | 3| 3| 3| 3| 1| 3| 4| 8| 3| 5| 3| 5| 7| 1| 3| 3| 0| 0| 3| 0| 3| 3| 9| 3| 1|             
                                           | 3| 2| 2| 2| 4| 0| 3| 3| 1| 6| 2| 3| 4| 8| 2| 3| 1| 1| 1| 0| 3| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 1| 2| 3| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 7| 8| 9| 0| 6| 8|             
 __________________________________________|__________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |             
                                           |                                                                          |             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                            X                                             |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Renal Tubule, Adenoma                |                                                          X               |             
                                           |__________________________________________________________________________|             
   Ureter                                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  33                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 4| 7| 7| 7| 4| 7| 6| 6| 5| 7| 7| 7| 5|             
                             DAY ON TEST   | 2| 9| 3| 0| 3| 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 3| 2| 3| 7| 3| 3| 3| 3| 0| 2|             
                                           | 2| 6| 3| 1| 2| 1| 1| 4| 1| 1| 2| 3| 9| 3| 1| 3| 9| 1| 4| 6| 0| 1| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8|             
    UG/KG                                  | 1| 3| 4| 1| 2| 3| 6| 7| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 2| 4| 5| 6| 7| 8|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Mesentery                               |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |          +     +  +  +  +  +           +     +                           |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |    +           +     +  +  +           +     +     +                     |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  34                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 4| 7| 7| 7| 4| 7| 6| 6| 5| 7| 7| 7| 5|             
                             DAY ON TEST   | 2| 9| 3| 0| 3| 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 3| 2| 3| 7| 3| 3| 3| 3| 0| 2|             
                                           | 2| 6| 3| 1| 2| 1| 1| 4| 1| 1| 2| 3| 9| 3| 1| 3| 9| 1| 4| 6| 0| 1| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8|             
    UG/KG                                  | 1| 3| 4| 1| 2| 3| 6| 7| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 2| 4| 5| 6| 7| 8|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |                                  X           X                    X      |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               |       X     X  X           X  X     X  X     X     X     X     X         |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |    X  X     X  X  X           X              X                          X|             
      C-Cell, Carcinoma                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                                                                          |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Benign          |                                                                          |             
      Granulosa-Theca Tumor Benign         |             X                                                            |             
      Schwannoma Malignant                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  +  +  M  +  M  M  +  M  +  M  +  +  M  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                       X                  |             
      Polyp Stromal                        |                                              X                           |             
      Squamous Cell Carcinoma              |                                  X                                       |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  35                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 4| 7| 7| 7| 4| 7| 6| 6| 5| 7| 7| 7| 5|             
                             DAY ON TEST   | 2| 9| 3| 0| 3| 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 3| 2| 3| 7| 3| 3| 3| 3| 0| 2|             
                                           | 2| 6| 3| 1| 2| 1| 1| 4| 1| 1| 2| 3| 9| 3| 1| 3| 9| 1| 4| 6| 0| 1| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8|             
    UG/KG                                  | 1| 3| 4| 1| 2| 3| 6| 7| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 2| 4| 5| 6| 7| 8|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Cervix, Carcinoma                    |                                                                         X|             
      Cervix, Schwannoma Malignant         |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |          +                                         +                     |             
      Squamous Cell Carcinoma              |                                                    X                     |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                             +            |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                X                                                         |             
      Carcinoma                            |          X  X                                               X  X        X|             
      Fibroadenoma                         |    X              X  X           X  X           X  X           X  X  X   |             
      Fibroadenoma, Multiple               |       X     X  X        X     X        X  X              X               |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibroma                              |                                  X                                       |             
      Fibrous Histiocytoma                 |                                                                          |             
      Lipoma                               |                               X                                          |             
      Subcutaneous Tissue, Sarcoma         |                                  X                                       |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  36                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 5| 7| 7| 7| 5| 7| 7| 7| 7| 4| 7| 7| 7| 4| 7| 6| 6| 5| 7| 7| 7| 5|             
                             DAY ON TEST   | 2| 9| 3| 0| 3| 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 3| 2| 3| 7| 3| 3| 3| 3| 0| 2|             
                                           | 2| 6| 3| 1| 2| 1| 1| 4| 1| 1| 2| 3| 9| 3| 1| 3| 9| 1| 4| 6| 0| 1| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    100                                    | 5| 5| 5| 6| 6| 6| 6| 6| 6| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8|             
    UG/KG                                  | 1| 3| 4| 1| 2| 3| 6| 7| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 2| 4| 5| 6| 7| 8|             
 __________________________________________|__________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM - cont             |                                                                          |             
                                           |                                                                          |             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Renal Tubule, Adenoma                |                                                                          |             
                                           |__________________________________________________________________________|             
   Ureter                                  |                                                                         +|             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  37                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7|                                                                 |            |
                             DAY ON TEST   | 3| 0| 3|                                                                 |            |
                                           | 1| 1| 3|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 2| 2| 2|                                                                 |     A      |
    100                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 0| 6| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             |                                                                          |  16        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                                                          |  19        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  38                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7|                                                                 |            |
                             DAY ON TEST   | 3| 0| 3|                                                                 |            |
                                           | 1| 1| 3|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 2| 2| 2|                                                                 |     A      |
    100                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 0| 6| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
   Blood Vessel                            | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +                                                                  |  53        |
      Pheochromocytoma Benign              |                                                                          |          4 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +                                                                  |  53        |
      Carcinoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +                                                                  |  50        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +                                                                  |  53        |
      Pars Distalis, Adenoma               | X  X                                                                     |         19 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +                                                                  |  53        |
      C-Cell, Adenoma                      | X  X                                                                     |         17 |
      C-Cell, Carcinoma                    |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | M  +  +                                                                  |  52        |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  39                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7|                                                                 |            |
                             DAY ON TEST   | 3| 0| 3|                                                                 |            |
                                           | 1| 1| 3|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 2| 2| 2|                                                                 |     A      |
    100                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 0| 6| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Granulosa Cell Tumor Benign          |                                                                          |          1 |
      Granulosa-Theca Tumor Benign         |                                                                          |          1 |
      Schwannoma Malignant                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  +  +                                                                  |  44        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +                                                                  |  53        |
      Carcinoma                            |                                                                          |          1 |
      Polyp Stromal                        |                                                                          |          4 |
      Squamous Cell Carcinoma              |                                                                          |          2 |
      Cervix, Carcinoma                    |                                                                          |          1 |
      Cervix, Schwannoma Malignant         |    X                                                                     |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   2        |
      Squamous Cell Carcinoma              |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   3        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +                                                                  |  52        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  40                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7|                                                                 |            |
                             DAY ON TEST   | 3| 0| 3|                                                                 |            |
                                           | 1| 1| 3|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 2| 2| 2|                                                                 |     A      |
    100                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 0| 6| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
   Mammary Gland                           | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                          |          7 |
      Fibroadenoma                         |                                                                          |         22 |
      Fibroadenoma, Multiple               | X                                                                        |         14 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +                                                                  |  53        |
      Fibroma                              |                                                                          |          2 |
      Fibrous Histiocytoma                 |                                                                          |          1 |
      Lipoma                               |                                                                          |          1 |
      Subcutaneous Tissue, Sarcoma         |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +                                                                  |  53        |
      Fibrous Histiocytoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  41                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 7|                                                                 |            |
                             DAY ON TEST   | 3| 0| 3|                                                                 |            |
                                           | 1| 1| 3|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 2| 2| 2|                                                                 |     A      |
    100                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 0| 6| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 SPECIAL SENSES SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
   Eye                                     | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +                                                                  |  53        |
      Renal Tubule, Adenoma                |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ureter                                  |                                                                          |   1        |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +                                                                  |  53        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +                                                                  |  53        |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  42                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 7| 5| 5| 6| 7| 5| 6| 4| 7| 3| 7| 7| 7| 6| 7| 7| 5| 4| 6| 6| 5| 7|             
                             DAY ON TEST   | 5| 1| 3| 3| 6| 5| 1| 3| 3| 9| 4| 3| 6| 3| 3| 3| 2| 3| 3| 2| 8| 7| 7| 0| 3|             
                                           | 5| 0| 3| 1| 8| 5| 3| 2| 0| 1| 3| 2| 0| 1| 1| 3| 1| 1| 2| 8| 6| 5| 5| 7| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4|             
    UG/KG                                  | 1| 2| 3| 4| 6| 7| 9| 1| 2| 3| 5| 1| 3| 4| 5| 8| 9| 0| 1| 2| 3| 4| 1| 2| 3|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |                                        +  +        +  +  +     +        +|             
      Gingival, Squamous Cell Carcinoma    |                                           X                              |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Tooth                                   | +        +                 +  +  +     +        +  +  +  +     +        +|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  43                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 7| 5| 5| 6| 7| 5| 6| 4| 7| 3| 7| 7| 7| 6| 7| 7| 5| 4| 6| 6| 5| 7|             
                             DAY ON TEST   | 5| 1| 3| 3| 6| 5| 1| 3| 3| 9| 4| 3| 6| 3| 3| 3| 2| 3| 3| 2| 8| 7| 7| 0| 3|             
                                           | 5| 0| 3| 1| 8| 5| 3| 2| 0| 1| 3| 2| 0| 1| 1| 3| 1| 1| 2| 8| 6| 5| 5| 7| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4|             
    UG/KG                                  | 1| 2| 3| 4| 6| 7| 9| 1| 2| 3| 5| 1| 3| 4| 5| 8| 9| 0| 1| 2| 3| 4| 1| 2| 3|             
 __________________________________________|__________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                            X                                             |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |                                  X                    X                 X|             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               |    X        X        X        X  X           X     X           X        X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |                      X  X              X  X        X     X        X      |             
      C-Cell, Adenoma, Multiple            |                                                                          |             
      C-Cell, Carcinoma                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Tissue NOS                              |                                        +                                 |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Malignant       |                            X                                             |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  M  +  +  +  +  +  +  +  M  M  M  M  M  M  M  M  +  +  +  M  +  M  M|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  44                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 7| 5| 5| 6| 7| 5| 6| 4| 7| 3| 7| 7| 7| 6| 7| 7| 5| 4| 6| 6| 5| 7|             
                             DAY ON TEST   | 5| 1| 3| 3| 6| 5| 1| 3| 3| 9| 4| 3| 6| 3| 3| 3| 2| 3| 3| 2| 8| 7| 7| 0| 3|             
                                           | 5| 0| 3| 1| 8| 5| 3| 2| 0| 1| 3| 2| 0| 1| 1| 3| 1| 1| 2| 8| 6| 5| 5| 7| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4|             
    UG/KG                                  | 1| 2| 3| 4| 6| 7| 9| 1| 2| 3| 5| 1| 3| 4| 5| 8| 9| 0| 1| 2| 3| 4| 1| 2| 3|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leiomyosarcoma                       |          X                             X                                 |             
      Polyp Stromal                        |                      X                 X                                 |             
      Schwannoma Malignant                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                                                          |             
      Squamous Cell Carcinoma              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                                   +      |             
      Mediastinal, Histiocytic Sarcoma     |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |             X                                                            |             
      Carcinoma, Multiple                  |                                                                          |             
      Fibroadenoma                         | X  X     X  X  X  X     X  X     X  X        X  X     X        X         |             
      Fibroadenoma, Multiple               |                                           X        X     X        X  X   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  45                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 7| 5| 5| 6| 7| 5| 6| 4| 7| 3| 7| 7| 7| 6| 7| 7| 5| 4| 6| 6| 5| 7|             
                             DAY ON TEST   | 5| 1| 3| 3| 6| 5| 1| 3| 3| 9| 4| 3| 6| 3| 3| 3| 2| 3| 3| 2| 8| 7| 7| 0| 3|             
                                           | 5| 0| 3| 1| 8| 5| 3| 2| 0| 1| 3| 2| 0| 1| 1| 3| 1| 1| 2| 8| 6| 5| 5| 7| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4|             
    UG/KG                                  | 1| 2| 3| 4| 6| 7| 9| 1| 2| 3| 5| 1| 3| 4| 5| 8| 9| 0| 1| 2| 3| 4| 1| 2| 3|             
 __________________________________________|__________________________________________________________________________|             
 INTEGUMENTARY SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibroma                              |                            X                                             |             
      Histiocytic Sarcoma                  |                                                                          |             
      Keratoacanthoma                      |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Astrocytoma Malignant                |          X                                                               |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
      Nephroblastoma                       |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  46                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 6| 7| 7| 5| 5| 6| 7| 5| 6| 4| 7| 3| 7| 7| 7| 6| 7| 7| 5| 4| 6| 6| 5| 7|             
                             DAY ON TEST   | 5| 1| 3| 3| 6| 5| 1| 3| 3| 9| 4| 3| 6| 3| 3| 3| 2| 3| 3| 2| 8| 7| 7| 0| 3|             
                                           | 5| 0| 3| 1| 8| 5| 3| 2| 0| 1| 3| 2| 0| 1| 1| 3| 1| 1| 2| 8| 6| 5| 5| 7| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4|             
    UG/KG                                  | 1| 2| 3| 4| 6| 7| 9| 1| 2| 3| 5| 1| 3| 4| 5| 8| 9| 0| 1| 2| 3| 4| 1| 2| 3|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  47                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 0| 7| 4| 3| 7| 2| 7| 6| 6| 6| 2| 7| 6| 7| 6| 6| 7| 7| 4| 7| 7| 5|             
                             DAY ON TEST   | 3| 3| 0| 5| 0| 5| 2| 3| 6| 3| 4| 5| 9| 2| 3| 4| 3| 9| 7| 3| 3| 5| 3| 3| 2|             
                                           | 1| 2| 3| 9| 3| 7| 2| 2| 3| 1| 7| 6| 1| 2| 1| 7| 1| 3| 5| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 4| 4| 4| 4| 5| 5| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9| 9| 9| 9| 9|             
    UG/KG                                  | 4| 5| 6| 9| 0| 8| 9| 0| 1| 2| 3| 4| 6| 7| 8| 9| 0| 1| 4| 5| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |             +        +                          +  +              +      |             
      Gingival, Squamous Cell Carcinoma    |                                                                          |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Tooth                                   |       +     +        +                 +        +  +  +     +     +      |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  48                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 0| 7| 4| 3| 7| 2| 7| 6| 6| 6| 2| 7| 6| 7| 6| 6| 7| 7| 4| 7| 7| 5|             
                             DAY ON TEST   | 3| 3| 0| 5| 0| 5| 2| 3| 6| 3| 4| 5| 9| 2| 3| 4| 3| 9| 7| 3| 3| 5| 3| 3| 2|             
                                           | 1| 2| 3| 9| 3| 7| 2| 2| 3| 1| 7| 6| 1| 2| 1| 7| 1| 3| 5| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 4| 4| 4| 4| 5| 5| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9| 9| 9| 9| 9|             
    UG/KG                                  | 4| 5| 6| 9| 0| 8| 9| 0| 1| 2| 3| 4| 6| 7| 8| 9| 0| 1| 4| 5| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
      Schwannoma Malignant                 |                                                             X            |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |                                                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  M  M  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               | X     X     X                    X  X           X        X  X           X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |                                     X                 X     X     X      |             
      C-Cell, Adenoma, Multiple            |                                           X                              |             
      C-Cell, Carcinoma                    |                               X                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Tissue NOS                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Malignant       |                                                                          |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  M  +  +  +  +  +  +  M  M  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  49                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 0| 7| 4| 3| 7| 2| 7| 6| 6| 6| 2| 7| 6| 7| 6| 6| 7| 7| 4| 7| 7| 5|             
                             DAY ON TEST   | 3| 3| 0| 5| 0| 5| 2| 3| 6| 3| 4| 5| 9| 2| 3| 4| 3| 9| 7| 3| 3| 5| 3| 3| 2|             
                                           | 1| 2| 3| 9| 3| 7| 2| 2| 3| 1| 7| 6| 1| 2| 1| 7| 1| 3| 5| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 4| 4| 4| 4| 5| 5| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9| 9| 9| 9| 9|             
    UG/KG                                  | 4| 5| 6| 9| 0| 8| 9| 0| 1| 2| 3| 4| 6| 7| 8| 9| 0| 1| 4| 5| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 GENITAL SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leiomyosarcoma                       |                                                                   X      |             
      Polyp Stromal                        |                               X     X        X           X               |             
      Schwannoma Malignant                 |                               X                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                               +                                          |             
      Squamous Cell Carcinoma              |                               X                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                              +                           |             
      Mediastinal, Histiocytic Sarcoma     |                                              X                           |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              | X                                                                        |             
      Carcinoma                            | X           X           X                                                |             
      Carcinoma, Multiple                  |       X                                                                  |             
      Fibroadenoma                         |             X  X           X                    X  X     X     X         |             
      Fibroadenoma, Multiple               |    X                 X              X     X           X     X     X      |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  50                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 0| 7| 4| 3| 7| 2| 7| 6| 6| 6| 2| 7| 6| 7| 6| 6| 7| 7| 4| 7| 7| 5|             
                             DAY ON TEST   | 3| 3| 0| 5| 0| 5| 2| 3| 6| 3| 4| 5| 9| 2| 3| 4| 3| 9| 7| 3| 3| 5| 3| 3| 2|             
                                           | 1| 2| 3| 9| 3| 7| 2| 2| 3| 1| 7| 6| 1| 2| 1| 7| 1| 3| 5| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 4| 4| 4| 4| 5| 5| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9| 9| 9| 9| 9|             
    UG/KG                                  | 4| 5| 6| 9| 0| 8| 9| 0| 1| 2| 3| 4| 6| 7| 8| 9| 0| 1| 4| 5| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 INTEGUMENTARY SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibroma                              |                                                                          |             
      Histiocytic Sarcoma                  |                                              X                           |             
      Keratoacanthoma                      |                                                             X            |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Astrocytoma Malignant                |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
      Nephroblastoma                       |                                        X                                 |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  51                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 0| 7| 4| 3| 7| 2| 7| 6| 6| 6| 2| 7| 6| 7| 6| 6| 7| 7| 4| 7| 7| 5|             
                             DAY ON TEST   | 3| 3| 0| 5| 0| 5| 2| 3| 6| 3| 4| 5| 9| 2| 3| 4| 3| 9| 7| 3| 3| 5| 3| 3| 2|             
                                           | 1| 2| 3| 9| 3| 7| 2| 2| 3| 1| 7| 6| 1| 2| 1| 7| 1| 3| 5| 2| 1| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    300                                    | 4| 4| 4| 4| 5| 5| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 8| 8| 8| 8| 9| 9| 9| 9| 9|             
    UG/KG                                  | 4| 5| 6| 9| 0| 8| 9| 0| 1| 2| 3| 4| 6| 7| 8| 9| 0| 1| 4| 5| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Histiocytic Sarcoma                  |                                              X                           |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  52                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 2| 6|                                                                 |            |
                             DAY ON TEST   | 3| 6| 2|                                                                 |            |
                                           | 1| 9| 4|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 3| 3| 3|                                                                 |     A      |
    300                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 6| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             |                                                                          |  12        |
      Gingival, Squamous Cell Carcinoma    |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +                                                                  |  52        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |       +                                                                  |  22        |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  53                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 2| 6|                                                                 |            |
                             DAY ON TEST   | 3| 6| 2|                                                                 |            |
                                           | 1| 9| 4|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 3| 3| 3|                                                                 |     A      |
    300                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 6| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Blood Vessel                            | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +                                                                  |  53        |
      Pheochromocytoma Benign              | X                                                                        |          4 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +                                                                  |  47        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +                                                                  |  53        |
      Pars Distalis, Adenoma               |       X                                                                  |         19 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +                                                                  |  53        |
      C-Cell, Adenoma                      |                                                                          |         11 |
      C-Cell, Adenoma, Multiple            |                                                                          |          1 |
      C-Cell, Carcinoma                    |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Tissue NOS                              |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  54                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 2| 6|                                                                 |            |
                             DAY ON TEST   | 3| 6| 2|                                                                 |            |
                                           | 1| 9| 4|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 3| 3| 3|                                                                 |     A      |
    300                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 6| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
   Clitoral Gland                          | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +                                                                  |  53        |
      Granulosa Cell Tumor Malignant       |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  M                                                                     |  35        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +                                                                  |  53        |
      Leiomyosarcoma                       |                                                                          |          3 |
      Polyp Stromal                        |                                                                          |          6 |
      Schwannoma Malignant                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   1        |
      Squamous Cell Carcinoma              |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   2        |
      Mediastinal, Histiocytic Sarcoma     |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  M                                                                  |  51        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  55                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 2| 6|                                                                 |            |
                             DAY ON TEST   | 3| 6| 2|                                                                 |            |
                                           | 1| 9| 4|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 3| 3| 3|                                                                 |     A      |
    300                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 6| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Histiocytic Sarcoma                  |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                          |          4 |
      Carcinoma, Multiple                  |                                                                          |          1 |
      Fibroadenoma                         |    X                                                                     |         22 |
      Fibroadenoma, Multiple               |       X                                                                  |         13 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +                                                                  |  53        |
      Fibroma                              |                                                                          |          1 |
      Histiocytic Sarcoma                  |                                                                          |          1 |
      Keratoacanthoma                      |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +                                                                  |  53        |
      Astrocytoma Malignant                |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  56                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 2| 6|                                                                 |            |
                             DAY ON TEST   | 3| 6| 2|                                                                 |            |
                                           | 1| 9| 4|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 3| 3| 3|                                                                 |     A      |
    300                                    | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 6| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
   Trachea                                 | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
      Nephroblastoma                       |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +                                                                  |  53        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +                                                                  |  53        |
      Histiocytic Sarcoma                  |                                                                          |          1 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  57                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 5| 6| 7| 5| 7| 6| 6| 6| 7| 3| 4| 7| 7| 7| 6| 6| 4| 6| 7| 5| 4| 7|             
                             DAY ON TEST   | 3| 1| 4| 1| 3| 1| 9| 0| 2| 4| 2| 3| 6| 5| 3| 3| 3| 9| 4| 9| 1| 3| 5| 7| 3|             
                                           | 2| 3| 7| 4| 9| 5| 0| 2| 1| 9| 1| 3| 0| 2| 1| 1| 1| 6| 7| 7| 7| 3| 5| 9| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4|             
    UG/KG                                  | 6| 9| 0| 6| 7| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 4| 5| 1| 2| 4| 6|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Uterus        |                                                                          |             
      Cholangioma                          |                      X                          X                        |             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Mesentery                               |                                                                          |             
      Carcinoma, Metastatic, Uterus        |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             | +                             +        +  +                 +            |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  58                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 5| 6| 7| 5| 7| 6| 6| 6| 7| 3| 4| 7| 7| 7| 6| 6| 4| 6| 7| 5| 4| 7|             
                             DAY ON TEST   | 3| 1| 4| 1| 3| 1| 9| 0| 2| 4| 2| 3| 6| 5| 3| 3| 3| 9| 4| 9| 1| 3| 5| 7| 3|             
                                           | 2| 3| 7| 4| 9| 5| 0| 2| 1| 9| 1| 3| 0| 2| 1| 1| 1| 6| 7| 7| 7| 3| 5| 9| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4|             
    UG/KG                                  | 6| 9| 0| 6| 7| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 4| 5| 1| 2| 4| 6|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Tooth                                   | +     +                       +        +  +  +           +  +     +      |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Aorta, Adventitia, Lymphoma Malignant|                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
      Schwannoma Malignant                 |                                                 X                        |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
      Pheochromocytoma Benign              |                                                 X                        |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  M  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                              X                           |             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
      Pars Distalis, Adenoma               | X  X        X  X     X        X  X        X     X           X           X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
      Bilateral, C-Cell, Adenoma           | X                                X                                X      |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  59                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 5| 6| 7| 5| 7| 6| 6| 6| 7| 3| 4| 7| 7| 7| 6| 6| 4| 6| 7| 5| 4| 7|             
                             DAY ON TEST   | 3| 1| 4| 1| 3| 1| 9| 0| 2| 4| 2| 3| 6| 5| 3| 3| 3| 9| 4| 9| 1| 3| 5| 7| 3|             
                                           | 2| 3| 7| 4| 9| 5| 0| 2| 1| 9| 1| 3| 0| 2| 1| 1| 1| 6| 7| 7| 7| 3| 5| 9| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4|             
    UG/KG                                  | 6| 9| 0| 6| 7| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 4| 5| 1| 2| 4| 6|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      C-Cell, Adenoma                      |    X        X  X                             X  X                       X|             
      C-Cell, Carcinoma                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Lymphoma Malignant                   |                                                          X               |             
      Polyp Stromal                        |             X                                                            |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                                                          |             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                          +               |             
      Deep Cervical, Carcinoma, Metastatic,|                                                                          |             
           Thyroid Gland                   |                                                                          |             
      Lumbar, Lymphoma Malignant           |                                                          X               |             
      Mediastinal, Carcinoma, Metastatic,  |                                                                          |             
           Uterus                          |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  60                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 5| 6| 7| 5| 7| 6| 6| 6| 7| 3| 4| 7| 7| 7| 6| 6| 4| 6| 7| 5| 4| 7|             
                             DAY ON TEST   | 3| 1| 4| 1| 3| 1| 9| 0| 2| 4| 2| 3| 6| 5| 3| 3| 3| 9| 4| 9| 1| 3| 5| 7| 3|             
                                           | 2| 3| 7| 4| 9| 5| 0| 2| 1| 9| 1| 3| 0| 2| 1| 1| 1| 6| 7| 7| 7| 3| 5| 9| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4|             
    UG/KG                                  | 6| 9| 0| 6| 7| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 4| 5| 1| 2| 4| 6|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Mediastinal, Lymphoma Malignant      |                                                          X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Uterus        |                                                                          |             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                           X     X                        |             
      Carcinoma                            |                                        X        X                        |             
      Fibroadenoma                         |    X     X        X  X        X  X  X  X        X  X  X              X  X|             
      Fibroadenoma, Multiple               |       X     X  X        X  X                 X                    X      |             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Adenoma                   |                   X                                                      |             
      Fibroma                              |                                                                          |             
      Fibrosarcoma                         |                X                                                         |             
      Fibrous Histiocytoma                 |                                                                          |             
      Lymphoma Malignant                   |                                                                          |             
      Squamous Cell Papilloma              |                                                                      X   |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  61                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 6| 5| 6| 7| 5| 7| 6| 6| 6| 7| 3| 4| 7| 7| 7| 6| 6| 4| 6| 7| 5| 4| 7|             
                             DAY ON TEST   | 3| 1| 4| 1| 3| 1| 9| 0| 2| 4| 2| 3| 6| 5| 3| 3| 3| 9| 4| 9| 1| 3| 5| 7| 3|             
                                           | 2| 3| 7| 4| 9| 5| 0| 2| 1| 9| 1| 3| 0| 2| 1| 1| 1| 6| 7| 7| 7| 3| 5| 9| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 0| 0| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3| 4| 4| 4| 4|             
    UG/KG                                  | 6| 9| 0| 6| 7| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 4| 5| 1| 2| 4| 6|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                                                                          |             
      Carcinoma, Metastatic, Mammary Gland |                                                                          |             
      Carcinoma, Metastatic, Uterus        |                                                                          |             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                             Page  62                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 5| 7| 6| 5| 7| 7| 7| 7| 7| 7| 5| 7| 3| 7| 6| 7| 7| 7| 6| 7| 5| 7| 4|             
                             DAY ON TEST   | 3| 3| 1| 1| 9| 4| 0| 3| 3| 2| 3| 3| 2| 3| 4| 3| 7| 3| 3| 3| 2| 3| 0| 3| 6|             
                                           | 3| 1| 0| 5| 6| 1| 6| 3| 1| 9| 1| 3| 9| 1| 1| 1| 5| 1| 2| 1| 5| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 4| 4| 4| 5| 5| 5| 5| 5| 6| 6| 6| 6| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9|             
    UG/KG                                  | 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 1|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Uterus        |                            X                                             |             
      Cholangioma                          |                                                                          |             
      Lymphoma Malignant                   |          X     X                                                         |             
                                           |__________________________________________________________________________|             
   Mesentery                               |                            +                                             |             
      Carcinoma, Metastatic, Uterus        |                            X                                             |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |          +  +        +  +  +     +                 +  +  +        +      |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  63                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 5| 7| 6| 5| 7| 7| 7| 7| 7| 7| 5| 7| 3| 7| 6| 7| 7| 7| 6| 7| 5| 7| 4|             
                             DAY ON TEST   | 3| 3| 1| 1| 9| 4| 0| 3| 3| 2| 3| 3| 2| 3| 4| 3| 7| 3| 3| 3| 2| 3| 0| 3| 6|             
                                           | 3| 1| 0| 5| 6| 1| 6| 3| 1| 9| 1| 3| 9| 1| 1| 1| 5| 1| 2| 1| 5| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 4| 4| 4| 5| 5| 5| 5| 5| 6| 6| 6| 6| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9|             
    UG/KG                                  | 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 1|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Tooth                                   |    +     +  +  +     +  +        +  +           +  +  +  +        +      |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Aorta, Adventitia, Lymphoma Malignant|                X                                                         |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
      Pheochromocytoma Benign              |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  M  M  M  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
      Pars Distalis, Adenoma               | X  X     X        X  X  X  X     X                    X  X  X            |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
      Bilateral, C-Cell, Adenoma           |                                              X                 X         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  64                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 5| 7| 6| 5| 7| 7| 7| 7| 7| 7| 5| 7| 3| 7| 6| 7| 7| 7| 6| 7| 5| 7| 4|             
                             DAY ON TEST   | 3| 3| 1| 1| 9| 4| 0| 3| 3| 2| 3| 3| 2| 3| 4| 3| 7| 3| 3| 3| 2| 3| 0| 3| 6|             
                                           | 3| 1| 0| 5| 6| 1| 6| 3| 1| 9| 1| 3| 9| 1| 1| 1| 5| 1| 2| 1| 5| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 4| 4| 4| 5| 5| 5| 5| 5| 6| 6| 6| 6| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9|             
    UG/KG                                  | 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 1|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      C-Cell, Adenoma                      | X  X              X  X                 X        X  X  X  X  X        X   |             
      C-Cell, Carcinoma                    |                         X                                X               |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  M  +  +        +  +  M  M  +  +  +  +  M  +  M  +  +  M  M  +  +  M|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                            X                                             |             
      Lymphoma Malignant                   |                X                                                         |             
      Polyp Stromal                        |                                                    X                    X|             
                                           |__________________________________________________________________________|             
   Vagina                                  |       +                                                                  |             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |       X                                                                  |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                      +     +              +              +               |             
      Deep Cervical, Carcinoma, Metastatic,|                                                                          |             
           Thyroid Gland                   |                                                          X               |             
      Lumbar, Lymphoma Malignant           |                                                                          |             
      Mediastinal, Carcinoma, Metastatic,  |                                                                          |             
           Uterus                          |                            X                                             |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  65                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 5| 7| 6| 5| 7| 7| 7| 7| 7| 7| 5| 7| 3| 7| 6| 7| 7| 7| 6| 7| 5| 7| 4|             
                             DAY ON TEST   | 3| 3| 1| 1| 9| 4| 0| 3| 3| 2| 3| 3| 2| 3| 4| 3| 7| 3| 3| 3| 2| 3| 0| 3| 6|             
                                           | 3| 1| 0| 5| 6| 1| 6| 3| 1| 9| 1| 3| 9| 1| 1| 1| 5| 1| 2| 1| 5| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 4| 4| 4| 5| 5| 5| 5| 5| 6| 6| 6| 6| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9|             
    UG/KG                                  | 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 1|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Mediastinal, Lymphoma Malignant      |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Uterus        |                            X                                             |             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                        X                                 |             
      Carcinoma                            |                                        X     X        X                 X|             
      Fibroadenoma                         | X                       X  X  X     X     X  X     X  X  X        X  X   |             
      Fibroadenoma, Multiple               |          X  X  X     X                          X                        |             
      Lymphoma Malignant                   |                X                                                         |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Adenoma                   |                                                                          |             
      Fibroma                              |                                                    X                     |             
      Fibrosarcoma                         |                                                                          |             
      Fibrous Histiocytoma                 |       X                                                                  |             
      Lymphoma Malignant                   |                X                                                         |             
      Squamous Cell Papilloma              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  66                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 5| 7| 6| 5| 7| 7| 7| 7| 7| 7| 5| 7| 3| 7| 6| 7| 7| 7| 6| 7| 5| 7| 4|             
                             DAY ON TEST   | 3| 3| 1| 1| 9| 4| 0| 3| 3| 2| 3| 3| 2| 3| 4| 3| 7| 3| 3| 3| 2| 3| 0| 3| 6|             
                                           | 3| 1| 0| 5| 6| 1| 6| 3| 1| 9| 1| 3| 9| 1| 1| 1| 5| 1| 2| 1| 5| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    1000                                   | 4| 4| 4| 5| 5| 5| 5| 5| 6| 6| 6| 6| 7| 7| 7| 8| 8| 8| 8| 8| 8| 8| 8| 9| 9|             
    UG/KG                                  | 7| 8| 9| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 8| 9| 0| 1| 3| 4| 5| 7| 8| 9| 0| 1|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                      X                                X                  |             
      Carcinoma, Metastatic, Mammary Gland |                                                                         X|             
      Carcinoma, Metastatic, Uterus        |                            X                                             |             
      Lymphoma Malignant                   |          X     X                                                         |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                X                                                         |             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Lymphoma Malignant                   |          X     X                                                         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                             Page  67                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +                                                                  |  53        |
      Carcinoma, Metastatic, Uterus        |                                                                          |          1 |
      Cholangioma                          |                                                                          |          2 |
      Lymphoma Malignant                   |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                                                                          |   1        |
      Carcinoma, Metastatic, Uterus        |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             |    +                                                                     |  16        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  68                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |    +                                                                     |  23        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Blood Vessel                            | +  +  +                                                                  |  53        |
      Aorta, Adventitia, Lymphoma Malignant|                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
      Pheochromocytoma Benign              |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +                                                                  |  53        |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | M  +  +                                                                  |  46        |
      Adenoma                              |       X                                                                  |          2 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  69                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
      Pars Distalis, Adenoma               | X     X                                                                  |         24 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
      Bilateral, C-Cell, Adenoma           |                                                                          |          5 |
      C-Cell, Adenoma                      |                                                                          |         17 |
      C-Cell, Carcinoma                    |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +                                                                  |  51        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  M  +                                                                  |  39        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +                                                                  |  53        |
      Carcinoma                            |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          2 |
      Polyp Stromal                        |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   1        |
      Fibrous Histiocytoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  70                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   5        |
      Deep Cervical, Carcinoma, Metastatic,|                                                                          |            |
           Thyroid Gland                   |                                                                          |          1 |
      Lumbar, Lymphoma Malignant           |                                                                          |          1 |
      Mediastinal, Carcinoma, Metastatic,  |                                                                          |            |
           Uterus                          |                                                                          |          1 |
      Mediastinal, Lymphoma Malignant      |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +                                                                  |  53        |
      Carcinoma, Metastatic, Uterus        |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +                                                                  |  53        |
      Adenoma                              |                                                                          |          3 |
      Carcinoma                            |                                                                          |          6 |
      Fibroadenoma                         | X     X                                                                  |         27 |
      Fibroadenoma, Multiple               |                                                                          |         12 |
      Lymphoma Malignant                   |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  71                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +                                                                  |  53        |
      Basal Cell Adenoma                   |                                                                          |          1 |
      Fibroma                              |                                                                          |          1 |
      Fibrosarcoma                         |                                                                          |          1 |
      Fibrous Histiocytoma                 |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          1 |
      Squamous Cell Papilloma              |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +                                                                  |  53        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +                                                                  |  53        |
      Alveolar/Bronchiolar Adenoma         |                                                                          |          2 |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
      Carcinoma, Metastatic, Uterus        |                                                                          |          1 |
      Lymphoma Malignant                   |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  72                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 3| 5|                                                                 |            |
                             DAY ON TEST   | 3| 8| 7|                                                                 |            |
                                           | 6| 3| 9|                                                                 |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0|                                                                 |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0| 0| 0|                                                                 |     T      |
                               ANIMAL ID   | 4| 4| 4|                                                                 |     A      |
    1000                                   | 9| 9| 9|                                                                 |     L      |
    UG/KG                                  | 3| 7| 8|                                                                 |            |
 _____________________________________________________________________________________________________________________|____________|
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +                                                                  |  52        |
      Lymphoma Malignant                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +                                                                  |  53        |
      Lymphoma Malignant                   |                                                                          |          3 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  73                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 3| 7| 4| 4| 5| 5| 5| 5| 0| 7| 4| 6| 7| 4| 7| 5| 7| 4| 5| 3| 3| 7| 3|             
                             DAY ON TEST   | 3| 5| 9| 3| 4| 8| 4| 8| 0| 5| 7| 3| 3| 1| 3| 3| 3| 9| 3| 7| 8| 8| 6| 3| 8|             
                                           | 3| 2| 3| 1| 3| 6| 8| 6| 9| 7| 9| 2| 8| 2| 1| 2| 3| 1| 1| 9| 3| 7| 0| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000                                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Adenoma               |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |       +  +     +  +  +  +  +     +        +     +     +  +        +  +   |             
      Gingival, Squamous Cell Carcinoma    |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   | +        +  +  +  +  +  +  +     +        +     +  +  +  +  +     +  +   |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant                 |                                        X                                 |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  74                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 3| 7| 4| 4| 5| 5| 5| 5| 0| 7| 4| 6| 7| 4| 7| 5| 7| 4| 5| 3| 3| 7| 3|             
                             DAY ON TEST   | 3| 5| 9| 3| 4| 8| 4| 8| 0| 5| 7| 3| 3| 1| 3| 3| 3| 9| 3| 7| 8| 8| 6| 3| 8|             
                                           | 3| 2| 3| 1| 3| 6| 8| 6| 9| 7| 9| 2| 8| 2| 1| 2| 3| 1| 1| 9| 3| 7| 0| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000                                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |                      X                                                   |             
      Bilateral, Pheochromocytoma Benign   |                                                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
      Pars Distalis, Adenoma               | X        X     X     X                    X     X                        |             
      Pars Distalis, Carcinoma             |                                                                          |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |          X                                                           X   |             
      C-Cell, Adenoma, Multiple            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  M  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Polyp Stromal                        |                                                                      X   |             
      Cervix, Schwannoma Malignant,        |                                                                          |             
          Metastatic, Vagina               |                         X                                                |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                         +                                                |             
      Schwannoma Malignant                 |                         X                                                |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  75                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 3| 7| 4| 4| 5| 5| 5| 5| 0| 7| 4| 6| 7| 4| 7| 5| 7| 4| 5| 3| 3| 7| 3|             
                             DAY ON TEST   | 3| 5| 9| 3| 4| 8| 4| 8| 0| 5| 7| 3| 3| 1| 3| 3| 3| 9| 3| 7| 8| 8| 6| 3| 8|             
                                           | 3| 2| 3| 1| 3| 6| 8| 6| 9| 7| 9| 2| 8| 2| 1| 2| 3| 1| 1| 9| 3| 7| 0| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000                                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |          +        +                 +                                    |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |          X                             X                                 |             
      Carcinoma                            |                               X        X                                 |             
      Fibroadenoma                         | X  X           X  X        X        X  X     X  X  X     X     X  X  X   |             
      Fibroadenoma, Multiple               |                                                                         X|             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma                 |             X                                                            |             
      Schwannoma Malignant                 |                   X                                                      |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Pituitary     |                                                                          |             
          Gland                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  76                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 4| 3| 7| 4| 4| 5| 5| 5| 5| 0| 7| 4| 6| 7| 4| 7| 5| 7| 4| 5| 3| 3| 7| 3|             
                             DAY ON TEST   | 3| 5| 9| 3| 4| 8| 4| 8| 0| 5| 7| 3| 3| 1| 3| 3| 3| 9| 3| 7| 8| 8| 6| 3| 8|             
                                           | 3| 2| 3| 1| 3| 6| 8| 6| 9| 7| 9| 2| 8| 2| 1| 2| 3| 1| 1| 9| 3| 7| 0| 2| 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000                                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 2| 2| 2| 2| 2| 2| 2| 2| 2| 3| 3| 3| 3| 3|             
    UG/KG                                  | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4|             
 __________________________________________|__________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma, Metastatic,    |                                                                          |             
           Skin                            |             X                                                            |             
      Carcinoma, Metastatic, Mammary Gland |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  M  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                                                                          |             
      Stromal Nephroma                     |       X                                                                  |             
      Bilateral, Renal Tubule, Carcinoma   |                                                             X            |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  77                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 5| 7| 7| 7| 7| 6| 5| 7| 7| 7| 7| 4| 6| 7| 6| 5| 7| 5| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 2| 0| 3| 3| 3| 3| 6| 0| 2| 3| 3| 3| 4| 4| 3| 1| 1| 3| 1| 7| 3| 3| 3| 3|             
                                           | 2| 1| 5| 1| 2| 1| 3| 8| 1| 3| 3| 3| 1| 2| 1| 1| 3| 4| 3| 4| 5| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    3000                                   | 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    UG/KG                                  | 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 6| 7| 8| 9|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Adenoma               |                                     X                                    |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             |    +     +     +  +                 +  +     +  +  +           +         |             
      Gingival, Squamous Cell Carcinoma    |                                                                          |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   | +  +     +     +  +  +  +     +     +  +     +  +  +  +  +     +  +      |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant                 |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  78                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 5| 7| 7| 7| 7| 6| 5| 7| 7| 7| 7| 4| 6| 7| 6| 5| 7| 5| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 2| 0| 3| 3| 3| 3| 6| 0| 2| 3| 3| 3| 4| 4| 3| 1| 1| 3| 1| 7| 3| 3| 3| 3|             
                                           | 2| 1| 5| 1| 2| 1| 3| 8| 1| 3| 3| 3| 1| 2| 1| 1| 3| 4| 3| 4| 5| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    3000                                   | 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    UG/KG                                  | 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 6| 7| 8| 9|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |          X                                                               |             
      Bilateral, Pheochromocytoma Benign   |                                                             X            |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               | X                          X                                X  X  X      |             
      Pars Distalis, Carcinoma             |                                                                          |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      | X                             X                       X                 X|             
      C-Cell, Adenoma, Multiple            |                      X                                                   |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  M  +  +        +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Polyp Stromal                        |                                                       X                  |             
      Cervix, Schwannoma Malignant,        |                                                                          |             
          Metastatic, Vagina               |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |             +                          +                                 |             
      Schwannoma Malignant                 |             X                          X                                 |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  79                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 5| 7| 7| 7| 7| 6| 5| 7| 7| 7| 7| 4| 6| 7| 6| 5| 7| 5| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 2| 0| 3| 3| 3| 3| 6| 0| 2| 3| 3| 3| 4| 4| 3| 1| 1| 3| 1| 7| 3| 3| 3| 3|             
                                           | 2| 1| 5| 1| 2| 1| 3| 8| 1| 3| 3| 3| 1| 2| 1| 1| 3| 4| 3| 4| 5| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    3000                                   | 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    UG/KG                                  | 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 6| 7| 8| 9|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |             +     +                                +                     |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |                                                                          |             
      Fibroadenoma                         | X           X     X           X  X  X        X           X           X  X|             
      Fibroadenoma, Multiple               |    X                    X  X              X     X  X  X                  |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma                 |                                                                          |             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Pituitary     |                                                                          |             
          Gland                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  80                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 5| 7| 7| 7| 7| 6| 5| 7| 7| 7| 7| 4| 6| 7| 6| 5| 7| 5| 6| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 2| 0| 3| 3| 3| 3| 6| 0| 2| 3| 3| 3| 4| 4| 3| 1| 1| 3| 1| 7| 3| 3| 3| 3|             
                                           | 2| 1| 5| 1| 2| 1| 3| 8| 1| 3| 3| 3| 1| 2| 1| 1| 3| 4| 3| 4| 5| 2| 1| 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|             
   SPRAGUE-DAWLEY RATS 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| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    3000                                   | 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1|             
    UG/KG                                  | 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 1| 2| 3| 4| 5| 6| 7| 8| 9|             
 __________________________________________|__________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
      Carcinoma, Metastatic, Mammary Gland |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |                                                                      X   |             
      Stromal Nephroma                     |                                                                          |             
      Bilateral, Renal Tubule, Carcinoma   |                                                                          |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  81                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6|                                                                       |            |
                             DAY ON TEST   | 7|                                                                       |            |
                                           | 2|                                                                       |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0|                                                                       |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0|                                                                       |     T      |
                               ANIMAL ID   | 6|                                                                       |     A      |
    3000                                   | 2|                                                                       |     L      |
    UG/KG                                  | 0|                                                                       |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +                                                                        |  51        |
      Hepatocellular Adenoma               |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             | +                                                                        |  25        |
      Gingival, Squamous Cell Carcinoma    |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   | +                                                                        |  35        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  82                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6|                                                                       |            |
                             DAY ON TEST   | 7|                                                                       |            |
                                           | 2|                                                                       |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0|                                                                       |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0|                                                                       |     T      |
                               ANIMAL ID   | 6|                                                                       |     A      |
    3000                                   | 2|                                                                       |     L      |
    UG/KG                                  | 0|                                                                       |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM - cont              |                                                                          |            |
                                           |                                                                          |            |
   Blood Vessel                            | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +                                                                        |  51        |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +                                                                        |  51        |
      Pheochromocytoma Benign              |                                                                          |          2 |
      Bilateral, Pheochromocytoma Benign   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +                                                                        |  48        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +                                                                        |  50        |
      Pars Distalis, Adenoma               |                                                                          |         11 |
      Pars Distalis, Carcinoma             | X                                                                        |          1 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +                                                                        |  51        |
      C-Cell, Adenoma                      |                                                                          |          6 |
      C-Cell, Adenoma, Multiple            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  83                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6|                                                                       |            |
                             DAY ON TEST   | 7|                                                                       |            |
                                           | 2|                                                                       |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0|                                                                       |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0|                                                                       |     T      |
                               ANIMAL ID   | 6|                                                                       |     A      |
    3000                                   | 2|                                                                       |     L      |
    UG/KG                                  | 0|                                                                       |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
   Ovary                                   | +                                                                        |  50        |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +                                                                        |  45        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +                                                                        |  50        |
      Polyp Stromal                        |                                                                          |          2 |
      Cervix, Schwannoma Malignant,        |                                                                          |            |
          Metastatic, Vagina               |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   3        |
      Schwannoma Malignant                 |                                                                          |          3 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   6        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +                                                                        |  47        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +                                                                        |  51        |
      Adenoma                              |                                                                          |          2 |
      Carcinoma                            |                                                                          |          2 |
      Fibroadenoma                         |                                                                          |         24 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  84                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6|                                                                       |            |
                             DAY ON TEST   | 7|                                                                       |            |
                                           | 2|                                                                       |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0|                                                                       |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0|                                                                       |     T      |
                               ANIMAL ID   | 6|                                                                       |     A      |
    3000                                   | 2|                                                                       |     L      |
    UG/KG                                  | 0|                                                                       |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Fibroadenoma, Multiple               |                                                                          |          8 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +                                                                        |  51        |
      Basal Cell Carcinoma                 |                                                                          |          1 |
      Schwannoma Malignant                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +                                                                        |  51        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +                                                                        |  51        |
      Carcinoma, Metastatic, Pituitary     |                                                                          |            |
          Gland                            | X                                                                        |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +                                                                        |  51        |
      Basal Cell Carcinoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +                                                                        |  51        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +                                                                        |  51        |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +                                                                        |  49        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  85                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6|                                                                       |            |
                             DAY ON TEST   | 7|                                                                       |            |
                                           | 2|                                                                       |            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 0|                                                                       |     O      |
   SPRAGUE-DAWLEY RATS FEMALE              | 0|                                                                       |     T      |
                               ANIMAL ID   | 6|                                                                       |     A      |
    3000                                   | 2|                                                                       |     L      |
    UG/KG                                  | 0|                                                                       |            |
 _____________________________________________________________________________________________________________________|____________|
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +                                                                        |  51        |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
      Stromal Nephroma                     |                                                                          |          1 |
      Bilateral, Renal Tubule, Carcinoma   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +                                                                        |  50        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +                                                                        |  51        |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  86                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 2| 7| 5| 7| 7| 5| 5| 3| 7| 5| 7| 4| 7| 5| 6| 6| 7| 6| 7| 7| 7| 5| 6| 7|             
                             DAY ON TEST   | 3| 4| 3| 9| 3| 3| 9| 1| 6| 3| 9| 2| 3| 3| 2| 7| 2| 3| 9| 3| 3| 0| 7| 5| 3|             
                                           | 2| 5| 1| 1| 1| 3| 0| 4| 0| 1| 1| 2| 7| 3| 8| 1| 7| 0| 1| 1| 3| 1| 5| 6| 2|             
 __________________________________________|__________________________________________________________________________|             
                                           | 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000 UG/                               | 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|             
    KG STOP                                | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrosarcoma                         |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cholangioma                          | X                                                                        |             
      Cholangioma, Multiple                |                                                                          |             
                                           |__________________________________________________________________________|             
   Oral Mucosa                             | +           +           +     +  +           +  +     +  +  +           +|             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Acinus, Adenoma                      |                            X                                             |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  M  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   | +        +  +           +     +  +  +     +     +  +  +  +  +  +        +|             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  87                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 2| 7| 5| 7| 7| 5| 5| 3| 7| 5| 7| 4| 7| 5| 6| 6| 7| 6| 7| 7| 7| 5| 6| 7|             
                             DAY ON TEST   | 3| 4| 3| 9| 3| 3| 9| 1| 6| 3| 9| 2| 3| 3| 2| 7| 2| 3| 9| 3| 3| 0| 7| 5| 3|             
                                           | 2| 5| 1| 1| 1| 3| 0| 4| 0| 1| 1| 2| 7| 3| 8| 1| 7| 0| 1| 1| 3| 1| 5| 6| 2|             
 __________________________________________|__________________________________________________________________________|             
                                           | 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000 UG/                               | 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|             
    KG STOP                                | 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              |                                                                          |             
                                           |                                                                          |             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pheochromocytoma Benign              |          X                                                     X         |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |       X                                                                  |             
      Carcinoma                            |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  M  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Pars Distalis, Adenoma               | X     X     X  X                    X  X     X  X        X  X        X   |             
      Pars Distalis, Carcinoma             |                                                                   X      |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      | X           X  X  X              X  X              X                    X|             
      C-Cell, Carcinoma                    |                                                       X                  |             
      Follicular Cell, Adenoma             |       X                                                     X            |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Cystadenoma                          |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  88                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 2| 7| 5| 7| 7| 5| 5| 3| 7| 5| 7| 4| 7| 5| 6| 6| 7| 6| 7| 7| 7| 5| 6| 7|             
                             DAY ON TEST   | 3| 4| 3| 9| 3| 3| 9| 1| 6| 3| 9| 2| 3| 3| 2| 7| 2| 3| 9| 3| 3| 0| 7| 5| 3|             
                                           | 2| 5| 1| 1| 1| 3| 0| 4| 0| 1| 1| 2| 7| 3| 8| 1| 7| 0| 1| 1| 3| 1| 5| 6| 2|             
 __________________________________________|__________________________________________________________________________|             
                                           | 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000 UG/                               | 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|             
    KG STOP                                | 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                     |                                                                          |             
                                           |                                                                          |             
      Granulosa-Theca Tumor Benign         |                            X                                             |             
                                           |__________________________________________________________________________|             
   Oviduct                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +     +|             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Polyp Stromal                        |                                  X              X        X               |             
      Cervix, Schwannoma Malignant         |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                              +                           |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  M  +|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |    X                                            X     X                 X|             
      Fibroadenoma                         |       X     X     X  X  X                 X        X        X            |             
      Fibroadenoma, Multiple               |          X     X           X  X  X           X        X  X     X     X   |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma                 |             X                                                            |             
      Fibroma                              |                                                                          |             
      Fibrosarcoma                         | X                                                  X                     |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  89                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 2| 7| 5| 7| 7| 5| 5| 3| 7| 5| 7| 4| 7| 5| 6| 6| 7| 6| 7| 7| 7| 5| 6| 7|             
                             DAY ON TEST   | 3| 4| 3| 9| 3| 3| 9| 1| 6| 3| 9| 2| 3| 3| 2| 7| 2| 3| 9| 3| 3| 0| 7| 5| 3|             
                                           | 2| 5| 1| 1| 1| 3| 0| 4| 0| 1| 1| 2| 7| 3| 8| 1| 7| 0| 1| 1| 3| 1| 5| 6| 2|             
 __________________________________________|__________________________________________________________________________|             
                                           | 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000 UG/                               | 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|             
    KG STOP                                | 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|             
 __________________________________________|__________________________________________________________________________|             
 INTEGUMENTARY SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Fibrous Histiocytoma                 |                                                                          |             
      Schwannoma Malignant                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Pituitary     |                                                                          |             
          Gland                            |                                                                   X      |             
      Meninges, Sarcoma                    |                                     X                                    |             
      Meninges, Schwannoma Malignant,      |                                                                          |             
          Metastatic, Skin                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Mammary Gland |    X                                                                     |             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Carcinoma, Metastatic,    |                                                                          |             
           Skin                            |             X                                                            |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Optic Nerve, Schwannoma Malignant,   |                                                                          |             
           Metastatic, Skin                |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  90                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 2| 7| 5| 7| 7| 5| 5| 3| 7| 5| 7| 4| 7| 5| 6| 6| 7| 6| 7| 7| 7| 5| 6| 7|             
                             DAY ON TEST   | 3| 4| 3| 9| 3| 3| 9| 1| 6| 3| 9| 2| 3| 3| 2| 7| 2| 3| 9| 3| 3| 0| 7| 5| 3|             
                                           | 2| 5| 1| 1| 1| 3| 0| 4| 0| 1| 1| 2| 7| 3| 8| 1| 7| 0| 1| 1| 3| 1| 5| 6| 2|             
 __________________________________________|__________________________________________________________________________|             
                                           | 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|             
   SPRAGUE-DAWLEY RATS 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|             
    3000 UG/                               | 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|             
    KG STOP                                | 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              |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Fibrous Histiocytoma, Metastatic,    |                                                                          |             
           Skin                            |                                                                          |             
      Stromal Nephroma                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  91                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 1| 4| 6| 7| 6| 7| 7| 4| 7| 7| 6| 7| 7| 6| 7| 7| 7| 6| 6| 7| 7| 1| 6|            |
                             DAY ON TEST   | 5| 3| 9| 6| 6| 3| 1| 3| 3| 0| 3| 3| 6| 3| 2| 7| 3| 3| 0| 3| 3| 3| 3| 8| 2|            |
                                           | 2| 2| 1| 7| 8| 1| 1| 3| 1| 0| 1| 1| 9| 2| 8| 0| 3| 2| 1| 7| 9| 1| 1| 3| 4|            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 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|     O      |
   SPRAGUE-DAWLEY RATS 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|     T      |
                               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| 6|     A      |
    3000 UG/                               | 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|     L      |
    KG STOP                                | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  M  +  +  +  +  +|  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
      Fibrosarcoma                         |                                                                X         |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  M  +  +  +  +  +|  48        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Cholangioma                          |                                                                          |          1 |
      Cholangioma, Multiple                |                                                                X         |          1 |
                                           |__________________________________________________________________________|____________|
   Oral Mucosa                             | +              +                          +     +                        |  15        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Acinus, Adenoma                      |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  48        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   | +              +     +  +  +  +           +  +  +  +     +              +|  27        |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  92                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 1| 4| 6| 7| 6| 7| 7| 4| 7| 7| 6| 7| 7| 6| 7| 7| 7| 6| 6| 7| 7| 1| 6|            |
                             DAY ON TEST   | 5| 3| 9| 6| 6| 3| 1| 3| 3| 0| 3| 3| 6| 3| 2| 7| 3| 3| 0| 3| 3| 3| 3| 8| 2|            |
                                           | 2| 2| 1| 7| 8| 1| 1| 3| 1| 0| 1| 1| 9| 2| 8| 0| 3| 2| 1| 7| 9| 1| 1| 3| 4|            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 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|     O      |
   SPRAGUE-DAWLEY RATS 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|     T      |
                               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| 6|     A      |
    3000 UG/                               | 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|     L      |
    KG STOP                                | 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                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Blood Vessel                            | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Fibrous Histiocytoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                             X            |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Pheochromocytoma Benign              |                   X              X        X                    X         |          6 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  M  +  M  +  +  +  +  +  +  +  +  M  +|  45        |
      Adenoma                              |                                  X                                       |          1 |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Pars Distalis, Adenoma               | X                    X  X     X  X     X  X        X  X  X     X        X|         23 |
      Pars Distalis, Carcinoma             |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  49        |
      C-Cell, Adenoma                      |             X  X     X        X  X  X        X  X              X  X      |         18 |
      C-Cell, Carcinoma                    |                                     X                          X         |          3 |
      Follicular Cell, Adenoma             |                                                                          |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  93                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 1| 4| 6| 7| 6| 7| 7| 4| 7| 7| 6| 7| 7| 6| 7| 7| 7| 6| 6| 7| 7| 1| 6|            |
                             DAY ON TEST   | 5| 3| 9| 6| 6| 3| 1| 3| 3| 0| 3| 3| 6| 3| 2| 7| 3| 3| 0| 3| 3| 3| 3| 8| 2|            |
                                           | 2| 2| 1| 7| 8| 1| 1| 3| 1| 0| 1| 1| 9| 2| 8| 0| 3| 2| 1| 7| 9| 1| 1| 3| 4|            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 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|     O      |
   SPRAGUE-DAWLEY RATS 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|     T      |
                               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| 6|     A      |
    3000 UG/                               | 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|     L      |
    KG STOP                                | 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                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  48        |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
      Cystadenoma                          |                                                                          |          1 |
      Granulosa-Theca Tumor Benign         |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Oviduct                                 | +  +  +  +     +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  M  +  +|  46        |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
      Carcinoma                            |                                                       X                  |          1 |
      Polyp Stromal                        |                                                                         X|          4 |
      Cervix, Schwannoma Malignant         |             X                                                            |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                +         |   1        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  48        |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  49        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  94                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 1| 4| 6| 7| 6| 7| 7| 4| 7| 7| 6| 7| 7| 6| 7| 7| 7| 6| 6| 7| 7| 1| 6|            |
                             DAY ON TEST   | 5| 3| 9| 6| 6| 3| 1| 3| 3| 0| 3| 3| 6| 3| 2| 7| 3| 3| 0| 3| 3| 3| 3| 8| 2|            |
                                           | 2| 2| 1| 7| 8| 1| 1| 3| 1| 0| 1| 1| 9| 2| 8| 0| 3| 2| 1| 7| 9| 1| 1| 3| 4|            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 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|     O      |
   SPRAGUE-DAWLEY RATS 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|     T      |
                               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| 6|     A      |
    3000 UG/                               | 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|     L      |
    KG STOP                                | 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|            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Carcinoma                            |                X  X  X        X           X           X                  |         10 |
      Fibroadenoma                         |          X  X                    X  X  X                 X  X     X      |         16 |
      Fibroadenoma, Multiple               |                               X              X     X  X                  |         14 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Basal Cell Carcinoma                 |                                                                          |          1 |
      Fibroma                              | X                       X                                                |          2 |
      Fibrosarcoma                         |                   X                                                  X   |          4 |
      Fibrous Histiocytoma                 |                                                             X            |          1 |
      Schwannoma Malignant                 |                            X                                             |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                            X                                             |          1 |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Carcinoma, Metastatic, Pituitary     |                                                                          |            |
          Gland                            |                                                                          |          1 |
      Meninges, Sarcoma                    |                                                                          |          1 |
      Meninges, Schwannoma Malignant,      |                                                                          |            |
          Metastatic, Skin                 |                            X                                             |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Carcinoma, Metastatic, Mammary Gland |                                                                          |          1 |
      Fibrous Histiocytoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                             X            |          1 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                             Page  95                                                               
                                                                                                                                   
NTP Experiment-Test: 96021-01                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                           TOXIC EQUIVALENCY FACTOR EVALUATION (PCB 153)                       Date: 12/15/03    
Route: GAVAGE                                                                                                     Time: 11:03:02    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 7| 1| 4| 6| 7| 6| 7| 7| 4| 7| 7| 6| 7| 7| 6| 7| 7| 7| 6| 6| 7| 7| 1| 6|            |
                             DAY ON TEST   | 5| 3| 9| 6| 6| 3| 1| 3| 3| 0| 3| 3| 6| 3| 2| 7| 3| 3| 0| 3| 3| 3| 3| 8| 2|            |
                                           | 2| 2| 1| 7| 8| 1| 1| 3| 1| 0| 1| 1| 9| 2| 8| 0| 3| 2| 1| 7| 9| 1| 1| 3| 4|            |
 __________________________________________|__________________________________________________________________________|     T (*)  |
                                           | 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|     O      |
   SPRAGUE-DAWLEY RATS 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|     T      |
                               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| 6|     A      |
    3000 UG/                               | 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|     L      |
    KG STOP                                | 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                 |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Basal Cell Carcinoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Optic Nerve, Schwannoma Malignant,   |                                                                          |            |
           Metastatic, Skin                |                            X                                             |          1 |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                            X                                             |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
      Fibrous Histiocytoma, Metastatic,    |                                                                          |            |
           Skin                            |                                                             X            |          1 |
      Stromal Nephroma                     |       X                                                                  |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|  49        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|  50        |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : Total animals with tissue examined microscopically; total animals with tumor                           
                         + : Tissue examined microscopically                      M : Missing tissue                                
                         X : Lesion present                                       A : Autolysis precludes evaluation                
                         I : Insufficient tissue                              BLANK : Not examined microscopically                  
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  96                                                               
                                                                                                                                   
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