National Toxicology Program

National Toxicology Program
https://ntp.niehs.nih.gov/go/923

TDMS Study 05110-02 Pathology Tables

NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54

                                                    CORE STUDY RATS/FINAL#3




       Facility:  Battelle Northwest

       Chemical CAS #:  91-20-3

       Lock Date:  01/05/99

       Cage Range:  All

       Reasons For Removal:    All

       Removal Date Range:     All

       Treatment Groups:       Include All


































Note:  Animals arranged according to CID number

                                                              Page   1


NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 6| 6| 7| 7| 7| 7| 7| 6| 7| 6| 7| 6| 7|             
                             DAY ON TEST   | 3| 3| 0| 3| 3| 3| 3| 3| 3| 3| 7| 2| 7| 0| 3| 3| 3| 3| 3| 7| 1| 7| 3| 5| 3|             
                                           | 4| 4| 5| 4| 6| 4| 5| 4| 5| 5| 9| 7| 6| 2| 6| 5| 6| 5| 5| 7| 3| 1| 5| 7| 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|             
   FISCHER 344 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|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X        X              X     X   |             
                                           |__________________________________________________________________________|             
   Mesentery                               |                      +           +  +           +                    +   |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                X         |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                X         |             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                X         |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                X         |             
                                           |__________________________________________________________________________|             
   Tongue                                  |                               +                                          |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   2                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 6| 6| 7| 7| 7| 7| 7| 6| 7| 6| 7| 6| 7|             
                             DAY ON TEST   | 3| 3| 0| 3| 3| 3| 3| 3| 3| 3| 7| 2| 7| 0| 3| 3| 3| 3| 3| 7| 1| 7| 3| 5| 3|             
                                           | 4| 4| 5| 4| 6| 4| 5| 4| 5| 5| 9| 7| 6| 2| 6| 5| 6| 5| 5| 7| 3| 1| 5| 7| 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|             
   FISCHER 344 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|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X  X     X                       X     X   |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Leukemia Mononuclear                 |                               X  X                             X     X   |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                  X                             X     X   |             
      Pheochromocytoma Benign              |                         X           X                                    |             
      Bilateral, Pheochromocytoma Benign   |                                           X                              |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                          X               |             
      Carcinoma                            | X                                                                        |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | M  M  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X  X  X                          X         |             
      Pars Distalis, Adenoma               | X     X              X     X        X     X     X     X  X  X  X        X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |    X                                X  X                    X            |             
      C-Cell, Carcinoma                    |                                                                          |             
      Follicular Cell, Carcinoma           |                                  X                                       |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                X        X                                                |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   3                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 6| 6| 7| 7| 7| 7| 7| 6| 7| 6| 7| 6| 7|             
                             DAY ON TEST   | 3| 3| 0| 3| 3| 3| 3| 3| 3| 3| 7| 2| 7| 0| 3| 3| 3| 3| 3| 7| 1| 7| 3| 5| 3|             
                                           | 4| 4| 5| 4| 6| 4| 5| 4| 5| 5| 9| 7| 6| 2| 6| 5| 6| 5| 5| 7| 3| 1| 5| 7| 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|             
   FISCHER 344 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|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                     |                                                                          |             
                                           |                                                                          |             
      Bilateral, Adenoma                   |                            X                                             |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Malignant       |                                                          X               |             
      Granulosa-Theca Tumor Malignant      |             X                                                            |             
      Leukemia Mononuclear                 |                               X  X     X                                 |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Polyp Stromal                        |          X              X     X     X     X              X        X     X|             
      Bilateral, Polyp Stromal             |                            X                                             |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X  X  X  X                       X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                  +                                       |             
      Pancreatic, Leukemia Mononuclear     |                                                                          |             
      Popliteal, Leukemia Mononuclear      |                                  X                                       |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  +  +  +  +  +  +  M  +  M  +  +  +  M  +  +  +  +  M  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X     X  X  X                          X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X                       X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X                       X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  +  +  +  +  M  +  M  +  M  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X     X  X  X                          X     X   |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma                      |                                                          X               |             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X        X              X     X   |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   4                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 6| 6| 7| 7| 7| 7| 7| 6| 7| 6| 7| 6| 7|             
                             DAY ON TEST   | 3| 3| 0| 3| 3| 3| 3| 3| 3| 3| 7| 2| 7| 0| 3| 3| 3| 3| 3| 7| 1| 7| 3| 5| 3|             
                                           | 4| 4| 5| 4| 6| 4| 5| 4| 5| 5| 9| 7| 6| 2| 6| 5| 6| 5| 5| 7| 3| 1| 5| 7| 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|             
   FISCHER 344 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|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
   Thymus                                  | M  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X  X  X                          X     X   |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                              X                           |             
      Fibroadenoma                         |    X  X                    X              X  X     X  X           X      |             
      Fibroadenoma, Multiple               |                         X                       X                        |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Squamous Cell Papilloma              |                                                                   X      |             
      Subcutaneous Tissue, Hemangioma      |                                                                          |             
      Subcutaneous Tissue, Sarcoma         |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                                                                          |             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X                       X     X   |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   5                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 6| 6| 7| 7| 7| 7| 7| 6| 7| 6| 7| 6| 7|             
                             DAY ON TEST   | 3| 3| 0| 3| 3| 3| 3| 3| 3| 3| 7| 2| 7| 0| 3| 3| 3| 3| 3| 7| 1| 7| 3| 5| 3|             
                                           | 4| 4| 5| 4| 6| 4| 5| 4| 5| 5| 9| 7| 6| 2| 6| 5| 6| 5| 5| 7| 3| 1| 5| 7| 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|             
   FISCHER 344 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|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 SPECIAL SENSES SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Zymbal's Gland                          |                                                                          |             
      Carcinoma                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X     X                          X     X   |             
      Renal Tubule, Carcinoma              |                                                       X                  |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                      X   |             
      Transitional Epithelium, Papilloma   |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X  X     X  X  X  X        X              X     X   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   6                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X                       X                                       |          2 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X                                                               |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X                                                               |          1 |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X           X  X     X  X        X              X               |         16 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |       +           +        +  +     +                    +  +     +      |  13        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                               X                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                          X               |          2 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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   7                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |                         X                                                |          2 |
                                           |__________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          5 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |       X                                                                  |          1 |
      Leukemia Mononuclear                 |                         X        X                                       |          6 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                         X                                                |          4 |
      Pheochromocytoma Benign              |                                                                          |          2 |
      Bilateral, Pheochromocytoma Benign   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  M  +  +  +  +  M   |  42        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          4 |
      Pars Distalis, Adenoma               | X  X  X     X  X  X  X           X                 X  X              X   |         23 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +   |  47        |
      C-Cell, Adenoma                      |                                                                          |          4 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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   8                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
      C-Cell, Carcinoma                    |                      X                 X              X                  |          3 |
      Follicular Cell, Carcinoma           |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                       X                  |          3 |
      Bilateral, Adenoma                   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Granulosa Cell Tumor Malignant       |       X                                                                  |          2 |
      Granulosa-Theca Tumor Malignant      |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Polyp Stromal                        |    X  X  X                                         X     X     X         |         14 |
      Bilateral, Polyp Stromal             |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X              X     X                          X               |         10 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                               +                                          |   2        |
      Pancreatic, Leukemia Mononuclear     |                               X                                          |          1 |
      Popliteal, Leukemia Mononuclear      |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  M  +  M  +  +  +  +  +   |  42        |
      Leukemia Mononuclear                 |                         X     X  X                       X               |         10 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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   9                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |          X           X  X     X  X                       X               |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X           X  X     X  X                       X               |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  A  +  M  +  +  +  +  M   |  40        |
      Leukemia Mononuclear                 |          X              X     X  X                       X               |         11 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hemangiosarcoma                      |                                                                          |          1 |
      Leukemia Mononuclear                 |          X           X  X     X  X        X              X               |         16 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  46        |
      Leukemia Mononuclear                 |          X                                                               |          6 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |       X                                                     X            |          3 |
      Fibroadenoma                         |             X        X     X                                X  X     X   |         14 |
      Fibroadenoma, Multiple               |                               X                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Squamous Cell Papilloma              |                                                                          |          1 |
      Subcutaneous Tissue, Hemangioma      |                               X                                          |          1 |
      Subcutaneous Tissue, Sarcoma         |                            X                                             |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  10                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Alveolar/Bronchiolar Adenoma         |       X                                                                  |          1 |
      Leukemia Mononuclear                 |          X           X  X     X  X                       X               |         14 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  48        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Zymbal's Gland                          |                                           +              +               |   2        |
      Carcinoma                            |                                           X              X               |          2 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                         X                                                |          5 |
      Renal Tubule, Carcinoma              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  I   |  48        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Transitional Epithelium, Papilloma   |                                                    X                     |          1 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  11                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 5| 7| 5| 6| 7| 5| 6| 7| 7| 7| 6| 7| 7| 6| 7| 6| 7| 7| 6| 7| 7| 7| 6|  |            |
                             DAY ON TEST   | 3| 1| 3| 7| 7| 3| 0| 9| 0| 3| 2| 7| 3| 3| 8| 3| 0| 3| 3| 5| 3| 3| 3| 2|  |            |
                                           | 5| 9| 4| 2| 1| 5| 9| 0| 7| 5| 5| 1| 5| 5| 4| 5| 4| 5| 4| 7| 5| 6| 5| 5|  |            |
 _____________________________________________________________________________________________________________________      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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS - cont                   |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |          X           X  X     X  X        X              X               |         16 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : 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: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 5| 7| 6| 7| 7| 7| 7| 6| 6| 6| 5| 6| 4| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 8| 3| 7| 3| 3| 3| 3| 0| 6| 9| 7| 6| 4| 8| 4| 2| 3| 2| 3| 3| 3| 3| 3| 3|             
                                           | 6| 1| 4| 7| 5| 4| 4| 4| 9| 5| 9| 7| 3| 0| 7| 7| 6| 5| 3| 5| 5| 5| 5| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma, Metastatic,|                                                                          |             
           Liver                           |                                                                          |             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma             |                                                                          |             
      Leukemia Mononuclear                 |    X     X     X  X        X  X     X        X     X     X        X     X|             
                                           |__________________________________________________________________________|             
   Mesentery                               |       +           +                       +              +        +     +|             
      Leukemia Mononuclear                 |                                                                   X      |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X              X                                          |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X                 X                                             |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma, Metastatic,|                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  13                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 5| 7| 6| 7| 7| 7| 7| 6| 6| 6| 5| 6| 4| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 8| 3| 7| 3| 3| 3| 3| 0| 6| 9| 7| 6| 4| 8| 4| 2| 3| 2| 3| 3| 3| 3| 3| 3|             
                                           | 6| 1| 4| 7| 5| 4| 4| 4| 9| 5| 9| 7| 3| 0| 7| 7| 6| 5| 3| 5| 5| 5| 5| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
           Liver                           |                                                                          |             
      Leukemia Mononuclear                 |          X                 X  X                                          |             
                                           |__________________________________________________________________________|             
   Tongue                                  |                               +                                          |             
      Epithelium, Squamous Cell Papilloma  |                               X                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X           X           X                                             |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                     X                                    |             
      Leukemia Mononuclear                 |    X           X           X  X              X                           |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X           X                    X        X                           |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  M  M  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X           X  X                                          |             
      Pars Distalis, Adenoma               | X  X           X  X              X        X        X     X     X     X  X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Bilateral, C-Cell, Adenoma           |                                                                         X|             
      C-Cell, Adenoma                      | X                                                                        |             
      C-Cell, Carcinoma                    |                                                                   X      |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                             Page  14                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 5| 7| 6| 7| 7| 7| 7| 6| 6| 6| 5| 6| 4| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 8| 3| 7| 3| 3| 3| 3| 0| 6| 9| 7| 6| 4| 8| 4| 2| 3| 2| 3| 3| 3| 3| 3| 3|             
                                           | 6| 1| 4| 7| 5| 4| 4| 4| 9| 5| 9| 7| 3| 0| 7| 7| 6| 5| 3| 5| 5| 5| 5| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                X     X                                      X            |             
      Carcinoma                            |                      X                                                   |             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Granulosa Cell Tumor Malignant       |                                                             X            |             
      Hepatocellular Carcinoma, Metastatic,|                                                                          |             
           Liver                           |                                                                          |             
      Leukemia Mononuclear                 |    X           X           X  X                                          |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                            X                                             |             
      Polyp Stromal                        |                X                                         X               |             
      Bilateral, Polyp Stromal             |                                                                X         |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X           X  X              X     X                     |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                               +                                          |             
      Deep Cervical, Leukemia Mononuclear  |                                                                          |             
      Pancreatic, Leukemia Mononuclear     |                                                                          |             
      Renal, Leukemia Mononuclear          |                               X                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | M  +  M  +  +  +  M  +  M  +  +  M  +  +  M  +  +  M  M  +  +  +  +  M  +|             
      Leukemia Mononuclear                 |    X     X     X           X  X     X        X           X        X     X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  M  +  +  +  +  M  +  +  +  +  M  +  +  +  M  +  M  +|             
      Leukemia Mononuclear                 |    X     X     X  X        X  X              X           X        X     X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X  X        X  X     X        X     X     X        X     X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | M  +  +  +  +  +  M  +  M  +  +  M  +  +  M  +  +  +  M  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  15                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 5| 7| 6| 7| 7| 7| 7| 6| 6| 6| 5| 6| 4| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 8| 3| 7| 3| 3| 3| 3| 0| 6| 9| 7| 6| 4| 8| 4| 2| 3| 2| 3| 3| 3| 3| 3| 3|             
                                           | 6| 1| 4| 7| 5| 4| 4| 4| 9| 5| 9| 7| 3| 0| 7| 7| 6| 5| 3| 5| 5| 5| 5| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Leukemia Mononuclear                 |    X     X     X           X  X     X        X     X     X        X     X|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X  X        X  X     X        X     X     X        X     X|             
      Osteosarcoma, Metastatic, Bone       |                                        X                                 |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X           X  X                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                         X        X        X     X                        |             
      Fibroadenoma                         | X     X  X                                         X  X                 X|             
      Fibroadenoma, Multiple               |                X           X                                             |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Osteosarcoma                         |                                        X                                 |             
                                           |__________________________________________________________________________|             
   Skeletal Muscle                         |                      +                                                   |             
      Leukemia Mononuclear                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Neuroblastoma, Metastatic, Nose      |                                                       X                  |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  16                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 5| 7| 6| 7| 7| 7| 7| 6| 6| 6| 5| 6| 4| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 8| 3| 7| 3| 3| 3| 3| 0| 6| 9| 7| 6| 4| 8| 4| 2| 3| 2| 3| 3| 3| 3| 3| 3|             
                                           | 6| 1| 4| 7| 5| 4| 4| 4| 9| 5| 9| 7| 3| 0| 7| 7| 6| 5| 3| 5| 5| 5| 5| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Zymbal's Gland|                                                                      X   |             
      Hepatocellular Carcinoma, Metastatic,|                                                                          |             
           Liver                           |                                                                          |             
      Leukemia Mononuclear                 |    X     X     X  X        X  X     X        X     X     X        X     X|             
      Osteosarcoma, Metastatic, Bone       |                                        X                                 |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X                                          |             
      Olfactory Epithelium, Neuroblastoma  |                                                       X                  |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Zymbal's Gland                          |                                                                      +   |             
      Carcinoma                            |                                                                      X   |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X           X  X              X     X                     |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                            X  X                                          |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X     X  X        X  X     X        X     X     X        X     X|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  17                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Hepatocellular Carcinoma, Metastatic,|                                                                          |            |
           Liver                           | X                                                                        |          1 |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hepatocellular Carcinoma             | X                                                                        |          1 |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         19 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                   +                                      +               |   8        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X                                            X     X            |          5 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  18                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |                                                       X                  |          3 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Hepatocellular Carcinoma, Metastatic,|                                                                          |            |
           Liver                           | X                                                                        |          1 |
      Leukemia Mononuclear                 |                                                       X                  |          4 |
                                           |__________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   1        |
      Epithelium, Squamous Cell Papilloma  |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X           X  X                             X     X            |          8 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                          X               |          2 |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         12 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                    X                             X     X     X      |          9 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                                      X   |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  +  M  +  +  +  +  +  M  +  +  +  +  +  +  M  +  M  +  +  +  M   |  40        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |          X           X                                X     X     X      |          8 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  19                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
      Pars Distalis, Adenoma               | X           X  X  X        X  X  X  X  X  X  X  X        X     X  X  X   |         27 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  A  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
      Bilateral, C-Cell, Adenoma           |                                                                          |          1 |
      C-Cell, Adenoma                      | X              X                                                         |          3 |
      C-Cell, Carcinoma                    |                                                    X                     |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Adenoma                              | X     X                                      X                 X         |          7 |
      Carcinoma                            |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Granulosa Cell Tumor Malignant       |                                                    X                     |          2 |
      Hepatocellular Carcinoma, Metastatic,|                                                                          |            |
           Liver                           | X                                                                        |          1 |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         11 |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          2 |
      Polyp Stromal                        |                      X                                   X        X      |          5 |
      Bilateral, Polyp Stromal             |                            X                                             |          2 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  20                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                      +                                +                  |   3        |
      Deep Cervical, Leukemia Mononuclear  |                                                       X                  |          1 |
      Pancreatic, Leukemia Mononuclear     |                      X                                X                  |          2 |
      Renal, Leukemia Mononuclear          |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  M  +  M  +  M  +  +  M  +  M  +  +  +  +  M  +  +  M  +  +  +  +   |  33        |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         17 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  M  +  +  +  M  M  M  +  +  +  +  +  +  +  +  M  +  +  +   |  39        |
      Leukemia Mononuclear                 |    X     X           X  X                             X           X      |         16 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         19 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  +  +  +  +  M  M  +  M  +  +  +  +  +  +  M  +  +  +  +  +  +  +   |  39        |
      Leukemia Mononuclear                 |    X     X              X                             X     X     X      |         17 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X     X           X  X        X                    X     X     X  X   |         21 |
      Osteosarcoma, Metastatic, Bone       |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  45        |
      Leukemia Mononuclear                 |          X              X                             X     X     X      |         10 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |                X                                                         |          5 |
      Fibroadenoma                         | X  X     X     X           X                    X  X  X  X           X   |         16 |
      Fibroadenoma, Multiple               |       X                                X                                 |          4 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  21                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Osteosarcoma                         |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Skeletal Muscle                         |                                                       +                  |   2        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X                                X                  |          2 |
      Neuroblastoma, Metastatic, Nose      |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma, Metastatic, Zymbal's Gland|                                                                          |          1 |
      Hepatocellular Carcinoma, Metastatic,|                                                                          |            |
           Liver                           | X                                                                        |          1 |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X     X      |         19 |
      Osteosarcoma, Metastatic, Bone       |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          2 |
      Olfactory Epithelium, Neuroblastoma  |                                                                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  22                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 5| 7| 6| 5| 7| 6| 7| 4| 6| 7| 5| 6| 7| 6| 5| 7| 7| 7| 7| 5| 6| 6| 7|  |            |
                             DAY ON TEST   | 7| 8| 3| 2| 0| 3| 0| 1| 7| 3| 3| 7| 2| 3| 7| 1| 3| 3| 2| 3| 0| 7| 7| 3|  |            |
                                           | 7| 1| 5| 5| 9| 5| 2| 3| 1| 5| 4| 4| 2| 6| 9| 8| 5| 6| 1| 5| 3| 9| 7| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +     +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Zymbal's Gland                          |                                                                          |   1        |
      Carcinoma                            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X     X           X  X                             X     X            |         13 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                         X                             X                  |          4 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X     X           X  X        X                    X     X     X  X   |         21 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : 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  23                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 6| 7| 5| 7| 7| 6| 6| 6| 7| 7| 5| 5| 7| 4| 6| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 5| 3| 1| 3| 3| 7| 8| 2| 3| 1| 8| 8| 3| 4| 9| 4| 3| 3| 3| 3|             
                                           | 4| 5| 5| 5| 4| 3| 5| 2| 4| 6| 1| 5| 4| 4| 5| 7| 7| 4| 0| 9| 0| 5| 6| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma             |                                                                          |             
      Leukemia Mononuclear                 | X        X              X  X  X              X           X              X|             
                                           |__________________________________________________________________________|             
   Mesentery                               |                +        +                 +     +                        |             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                          X               |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tooth                                   |                                                             +            |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  24                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 6| 7| 5| 7| 7| 6| 6| 6| 7| 7| 5| 5| 7| 4| 6| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 5| 3| 1| 3| 3| 7| 8| 2| 3| 1| 8| 8| 3| 4| 9| 4| 3| 3| 3| 3|             
                                           | 4| 5| 5| 5| 4| 3| 5| 2| 4| 6| 1| 5| 4| 4| 5| 7| 7| 4| 0| 9| 0| 5| 6| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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              |                                                                          |             
                                           |                                                                          |             
      Schwannoma Benign                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Leukemia Mononuclear                 | X                             X              X                          X|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X              X                          X|             
      Pheochromocytoma Benign              |                               X                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  M  M  M  +  +  +  +  M  +  +  +  +  +  M  M  M  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                          X               |             
      Pars Distalis, Adenoma               | X  X     X  X  X                 X  X  X  X     X                 X      |             
      Pars Distalis, Carcinoma             |                                                                          |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |          X                                                           X   |             
      C-Cell, Carcinoma                    |                                                                X         |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |                                                       X                  |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  25                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 6| 7| 5| 7| 7| 6| 6| 6| 7| 7| 5| 5| 7| 4| 6| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 5| 3| 1| 3| 3| 7| 8| 2| 3| 1| 8| 8| 3| 4| 9| 4| 3| 3| 3| 3|             
                                           | 4| 5| 5| 5| 4| 3| 5| 2| 4| 6| 1| 5| 4| 4| 5| 7| 7| 4| 0| 9| 0| 5| 6| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                     |                                                                          |             
                                           |                                                                          |             
      Leukemia Mononuclear                 |                               X              X                           |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Leukemia Mononuclear                 |                                              X           X               |             
      Polyp Stromal                        |                                                    X           X         |             
      Bilateral, Polyp Stromal             |                                                                          |             
                                           |__________________________________________________________________________|             
   Vagina                                  |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X              X           X               |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                          +               |             
      Deep Cervical, Leukemia Mononuclear  |                                                          X               |             
      Pancreatic, Leukemia Mononuclear     |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  +  +  +  +  +  +  +  M  +  +  +  M  +  M  +  M  +  M  +  M  +  +  +  +|             
      Leukemia Mononuclear                 | X        X                    X              X           X              X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  M  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X              X     X              X           X              X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X              X     X              X           X              X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  +  +  +  M  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X              X     X              X           X              X|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X        X     X  X  X              X           X              X|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +|             
      Leukemia Mononuclear                 | X                             X              X                           |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  26                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 6| 7| 5| 7| 7| 6| 6| 6| 7| 7| 5| 5| 7| 4| 6| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 5| 3| 1| 3| 3| 7| 8| 2| 3| 1| 8| 8| 3| 4| 9| 4| 3| 3| 3| 3|             
                                           | 4| 5| 5| 5| 4| 3| 5| 2| 4| 6| 1| 5| 4| 4| 5| 7| 7| 4| 0| 9| 0| 5| 6| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                            X     X              X                        |             
      Fibroadenoma                         | X     X        X                 X           X  X     X  X              X|             
      Fibroadenoma, Multiple               |                                                                          |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Adenoma                   |                                        X                                 |             
      Subcutaneous Tissue, Fibroma         |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Pituitary     |                                                                          |             
          Gland                            |                                                                          |             
      Glioma Malignant                     |                      X                                                   |             
      Leukemia Mononuclear                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X              X     X              X           X              X|             
      Mediastinum, Mesothelioma Benign     |                         X                                                |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Olfactory Epithelium, Neuroblastoma  |                                                                          |             
      Respiratory Epithelium, Adenoma      |          X                                                     X         |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  27                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 7| 7| 6| 7| 5| 7| 7| 6| 6| 6| 7| 7| 5| 5| 7| 4| 6| 4| 7| 7| 7| 7|             
                             DAY ON TEST   | 3| 3| 3| 3| 3| 5| 3| 1| 3| 3| 7| 8| 2| 3| 1| 8| 8| 3| 4| 9| 4| 3| 3| 3| 3|             
                                           | 4| 5| 5| 5| 4| 3| 5| 2| 4| 6| 1| 5| 4| 4| 5| 7| 7| 4| 0| 9| 0| 5| 6| 5| 5|             
 __________________________________________|__________________________________________________________________________|             
                                           | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
   FISCHER 344 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 SPECIAL SENSES SYSTEM - cont              |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X                             X              X           X               |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                              X           X               |             
      Transitional Epithelium, Papilloma   |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X        X        X     X  X  X              X           X              X|             
      Mesothelioma Benign                  |                         X                                                |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  28                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 6| 7| 5| 5| 4| 6| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 1| 3| 3| 3| 3| 3| 3| 3| 2| 3| 3| 0| 8| 3| 3| 8| 8| 8| 5| 3| 3| 6| 3|  |            |
                                           | 5| 5| 5| 6| 4| 4| 5| 4| 5| 1| 5| 4| 7| 8| 0| 5| 6| 1| 0| 3| 5| 4| 0| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  A  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hepatocellular Carcinoma             |          X                                                               |          1 |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         14 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |    +                    +                    +                           |   7        |
      Leukemia Mononuclear                 |    X                                                                     |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                              X                           |          2 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                                                          |   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  29                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 6| 7| 5| 5| 4| 6| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 1| 3| 3| 3| 3| 3| 3| 3| 2| 3| 3| 0| 8| 3| 3| 8| 8| 8| 5| 3| 3| 6| 3|  |            |
                                           | 5| 5| 5| 6| 4| 4| 5| 4| 5| 1| 5| 4| 7| 8| 0| 5| 6| 1| 0| 3| 5| 4| 0| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                                         X           X        X      |          5 |
      Schwannoma Benign                    |                X                                                         |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                      X                                                   |          1 |
      Leukemia Mononuclear                 |    X                                X        X           X        X      |          9 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                                X        X           X        X      |          8 |
      Pheochromocytoma Benign              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                          X               |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +   |  41        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                                         X           X        X      |          5 |
      Pars Distalis, Adenoma               | X  X  X     X  X  X  X  X              X  X  X     X     X               |         24 |
      Pars Distalis, Carcinoma             |                            X                                             |          1 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      C-Cell, Adenoma                      |                                                                          |          2 |
      C-Cell, Carcinoma                    |                   X                                                      |          2 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 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  30                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 6| 7| 5| 5| 4| 6| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 1| 3| 3| 3| 3| 3| 3| 3| 2| 3| 3| 0| 8| 3| 3| 8| 8| 8| 5| 3| 3| 6| 3|  |            |
                                           | 5| 5| 5| 6| 4| 4| 5| 4| 5| 1| 5| 4| 7| 8| 0| 5| 6| 1| 0| 3| 5| 4| 0| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |    X     X  X                                               X            |          4 |
      Carcinoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                                                     X               |          4 |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |                                  X                                       |          1 |
      Leukemia Mononuclear                 |                                                                          |          2 |
      Polyp Stromal                        |       X  X           X  X                             X              X   |          8 |
      Bilateral, Polyp Stromal             |                                                 X                        |          1 |
                                           |__________________________________________________________________________|____________|
   Vagina                                  |                                                 +                        |   1        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |          9 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                          +               |   2        |
      Deep Cervical, Leukemia Mononuclear  |                                                                          |          1 |
      Pancreatic, Leukemia Mononuclear     |                                                          X               |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | M  +  +  +  M  M  +  +  +  +  +  M  +  +  M  +  M  M  M  +  M  +  +  +   |  34        |
      Leukemia Mononuclear                 |    X                                X        X           X        X      |         11 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         13 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  31                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 6| 7| 5| 5| 4| 6| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 1| 3| 3| 3| 3| 3| 3| 3| 2| 3| 3| 0| 8| 3| 3| 8| 8| 8| 5| 3| 3| 6| 3|  |            |
                                           | 5| 5| 5| 6| 4| 4| 5| 4| 5| 1| 5| 4| 7| 8| 0| 5| 6| 1| 0| 3| 5| 4| 0| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         13 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  +  M  +  +  +  +  +  +  M  M  +  +  +  M  +  +  +  +  +  +  +  M  +   |  41        |
      Leukemia Mononuclear                 |    X        X                       X        X           X               |         12 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         15 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |    X                                         X           X        X      |          7 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |                                                                          |          3 |
      Fibroadenoma                         |          X        X  X  X                                X  X  X  X      |         17 |
      Fibroadenoma, Multiple               |                X                                                         |          1 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Basal Cell Adenoma                   |                                                                          |          1 |
      Subcutaneous Tissue, Fibroma         |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma, Metastatic, Pituitary     |                                                                          |            |
          Gland                            |                            X                                             |          1 |
      Glioma 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  32                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 6| 7| 5| 5| 4| 6| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 1| 3| 3| 3| 3| 3| 3| 3| 2| 3| 3| 0| 8| 3| 3| 8| 8| 8| 5| 3| 3| 6| 3|  |            |
                                           | 5| 5| 5| 6| 4| 4| 5| 4| 5| 1| 5| 4| 7| 8| 0| 5| 6| 1| 0| 3| 5| 4| 0| 6|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 NERVOUS SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |                                                          X               |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         13 |
      Mediastinum, Mesothelioma Benign     |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Olfactory Epithelium, Neuroblastoma  |             X                             X           X                  |          3 |
      Respiratory Epithelium, Adenoma      | X                          X                                             |          4 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +     +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +   |  46        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X                                X                    X        X      |          8 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                              X           X               |          4 |
      Transitional Epithelium, Papilloma   |                                     X                                    |          1 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |    X        X                       X        X           X        X      |         15 |
      Mesothelioma Benign                  |                                                                          |          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  33                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 5| 7| 6| 7| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 6| 4| 7| 7| 6| 7| 1| 4| 7| 7|             
                             DAY ON TEST   | 4| 7| 3| 2| 3| 8| 3| 3| 2| 2| 3| 1| 3| 8| 3| 6| 2| 3| 3| 7| 3| 1| 7| 3| 3|             
                                           | 7| 9| 5| 4| 6| 5| 5| 5| 2| 5| 5| 7| 5| 4| 6| 7| 9| 5| 5| 7| 5| 1| 8| 5| 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|             
   FISCHER 344 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   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Mesentery                               |                                                    +              +      |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X        X                                                |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Leukemia Mononuclear                 |                         X                                                |             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X                                                |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X                                                |             
                                           |__________________________________________________________________________|             
   Tongue                                  |                                                                          |             
      Squamous Cell Papilloma              |                                                                          |             
                                           |__________________________________________________________________________|             
   Tooth                                   |                                                                +         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  34                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 5| 7| 6| 7| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 6| 4| 7| 7| 6| 7| 1| 4| 7| 7|             
                             DAY ON TEST   | 4| 7| 3| 2| 3| 8| 3| 3| 2| 2| 3| 1| 3| 8| 3| 6| 2| 3| 3| 7| 3| 1| 7| 3| 3|             
                                           | 7| 9| 5| 4| 6| 5| 5| 5| 2| 5| 5| 7| 5| 4| 6| 7| 9| 5| 5| 7| 5| 1| 8| 5| 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|             
   FISCHER 344 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   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X  X                                      X      |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X      |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X           X  X  X  X                                X      |             
      Pheochromocytoma Benign              |                                           X                              |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X        X     X                                   X      |             
      Pars Distalis, Adenoma               |          X                    X     X              X  X  X  X            |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |                               X                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                  X                                       |             
      Carcinoma                            |                               X                                          |             
      Leukemia Mononuclear                 |                         X                                                |             
                                           |__________________________________________________________________________|             
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X                 X  X                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  35                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 5| 7| 6| 7| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 6| 4| 7| 7| 6| 7| 1| 4| 7| 7|             
                             DAY ON TEST   | 4| 7| 3| 2| 3| 8| 3| 3| 2| 2| 3| 1| 3| 8| 3| 6| 2| 3| 3| 7| 3| 1| 7| 3| 3|             
                                           | 7| 9| 5| 4| 6| 5| 5| 5| 2| 5| 5| 7| 5| 4| 6| 7| 9| 5| 5| 7| 5| 1| 8| 5| 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|             
   FISCHER 344 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   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                     |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X                                                |             
      Polyp Stromal                        |             X                       X     X  X                           |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |          +              +     +                                          |             
      Leukemia Mononuclear                 |                         X                                                |             
      Pancreatic, Leukemia Mononuclear     |          X                    X                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  +  M  +  M  +  +  M  +  M  +  +  M  +  +  +  +  +  +  M  +  +  +  M  M|             
      Leukemia Mononuclear                 |    X     X     X        X     X  X                                X      |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  M  M  +  M  +  M  M  +  +  +  +  M  M  M  M  M  M  M  M  +  M  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  M  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  M  +  +  M  +  M|             
      Leukemia Mononuclear                 |          X     X        X     X                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                  X                    X                  |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  36                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 5| 7| 6| 7| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 6| 4| 7| 7| 6| 7| 1| 4| 7| 7|             
                             DAY ON TEST   | 4| 7| 3| 2| 3| 8| 3| 3| 2| 2| 3| 1| 3| 8| 3| 6| 2| 3| 3| 7| 3| 1| 7| 3| 3|             
                                           | 7| 9| 5| 4| 6| 5| 5| 5| 2| 5| 5| 7| 5| 4| 6| 7| 9| 5| 5| 7| 5| 1| 8| 5| 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|             
   FISCHER 344 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   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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               |                                                                          |             
                                           |                                                                          |             
      Fibroadenoma                         |             X  X              X     X  X                                 |             
      Fibroadenoma, Multiple               |                         X                                               X|             
      Leukemia Mononuclear                 |                         X                                                |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Keratoacanthoma                      |                                                                          |             
      Subcutaneous Tissue, Fibroma         |                                                    X                     |             
      Subcutaneous Tissue, Fibrosarcoma    |                                        X                                 |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Neuroblastoma, Metastatic, Nose      |                                              X  X                        |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X     X|             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                         X     X                                          |             
      Olfactory Epithelium, Neuroblastoma  | X     X  X                       X           X  X                        |             
      Respiratory Epithelium, Adenoma      |                                                    X                     |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +     +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  37                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 5| 5| 7| 6| 7| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 6| 4| 7| 7| 6| 7| 1| 4| 7| 7|             
                             DAY ON TEST   | 4| 7| 3| 2| 3| 8| 3| 3| 2| 2| 3| 1| 3| 8| 3| 6| 2| 3| 3| 7| 3| 1| 7| 3| 3|             
                                           | 7| 9| 5| 4| 6| 5| 5| 5| 2| 5| 5| 7| 5| 4| 6| 7| 9| 5| 5| 7| 5| 1| 8| 5| 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|             
   FISCHER 344 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   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                         |                                                                   +      |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X        X  X  X                                   X      |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X              X                                                |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X     X  X  X        X  X  X  X                                X     X|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  38                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 5| 5| 6| 7| 6| 4| 6| 4| 6| 7| 5| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|  |            |
                             DAY ON TEST   | 3| 8| 2| 5| 0| 0| 3| 5| 4| 2| 8| 4| 3| 3| 3| 4| 3| 3| 3| 3| 3| 3| 3| 3|  |            |
                                           | 5| 0| 0| 5| 3| 1| 6| 6| 5| 5| 2| 3| 5| 6| 5| 2| 6| 4| 4| 6| 4| 5| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               ANIMAL ID   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  A  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         15 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                            +                    +     +                  |   5        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                            X                                             |          1 |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          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  39                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 5| 5| 6| 7| 6| 4| 6| 4| 6| 7| 5| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|  |            |
                             DAY ON TEST   | 3| 8| 2| 5| 0| 0| 3| 5| 4| 2| 8| 4| 3| 3| 3| 4| 3| 3| 3| 3| 3| 3| 3| 3|  |            |
                                           | 5| 0| 0| 5| 3| 1| 6| 6| 5| 5| 2| 3| 5| 6| 5| 2| 6| 4| 4| 6| 4| 5| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               ANIMAL ID   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
   Tongue                                  | +                                                                        |   1        |
      Squamous Cell Papilloma              | X                                                                        |          1 |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X                                       |          7 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                     |         13 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                     |         12 |
      Pheochromocytoma Benign              |                                                                   X      |          2 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                     X                                    |          1 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                      X              X                                    |          7 |
      Pars Distalis, Adenoma               | X     X     X  X  X        X  X        X     X  X     X           X  X   |         20 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      C-Cell, Adenoma                      |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 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  40                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 5| 5| 6| 7| 6| 4| 6| 4| 6| 7| 5| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|  |            |
                             DAY ON TEST   | 3| 8| 2| 5| 0| 0| 3| 5| 4| 2| 8| 4| 3| 3| 3| 4| 3| 3| 3| 3| 3| 3| 3| 3|  |            |
                                           | 5| 0| 0| 5| 3| 1| 6| 6| 5| 5| 2| 3| 5| 6| 5| 2| 6| 4| 4| 6| 4| 5| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               ANIMAL ID   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Adenoma                              |                                              X                           |          2 |
      Carcinoma                            |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X              X                                    |          5 |
                                           |__________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                    X                     |          2 |
      Polyp Stromal                        | X                                                  X                 X   |          7 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         12 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                                                                          |   3        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Pancreatic, Leukemia Mononuclear     |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  M  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +  +  +  +  +  M  M  +   |  36        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         12 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         15 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  +  M  +  M  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  +  +  +   |  31        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         13 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 5| 5| 6| 7| 6| 4| 6| 4| 6| 7| 5| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|  |            |
                             DAY ON TEST   | 3| 8| 2| 5| 0| 0| 3| 5| 4| 2| 8| 4| 3| 3| 3| 4| 3| 3| 3| 3| 3| 3| 3| 3|  |            |
                                           | 5| 0| 0| 5| 3| 1| 6| 6| 5| 5| 2| 3| 5| 6| 5| 2| 6| 4| 4| 6| 4| 5| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               ANIMAL ID   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         15 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  M  +  +  M  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +   |  41        |
      Leukemia Mononuclear                 |                      X           X                                       |          6 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |             X                                                            |          3 |
      Fibroadenoma                         |                            X              X     X        X        X      |         10 |
      Fibroadenoma, Multiple               |                   X                                            X         |          4 |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Keratoacanthoma                      |    X                                                                     |          1 |
      Subcutaneous Tissue, Fibroma         |                                                                          |          1 |
      Subcutaneous Tissue, Fibrosarcoma    |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Neuroblastoma, Metastatic, Nose      |    X                    X                                                |          4 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  42                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 5| 5| 6| 7| 6| 4| 6| 4| 6| 7| 5| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7|  |            |
                             DAY ON TEST   | 3| 8| 2| 5| 0| 0| 3| 5| 4| 2| 8| 4| 3| 3| 3| 4| 3| 3| 3| 3| 3| 3| 3| 3|  |            |
                                           | 5| 0| 0| 5| 3| 1| 6| 6| 5| 5| 2| 3| 5| 6| 5| 2| 6| 4| 4| 6| 4| 5| 5| 5|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 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|  |     T      |
                               ANIMAL ID   | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         15 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                     X                                    |          3 |
      Olfactory Epithelium, Neuroblastoma  |    X     X              X              X  X                          X   |         12 |
      Respiratory Epithelium, Adenoma      |          X                                                               |          2 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Harderian Gland                         |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                     |         11 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          2 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X           X  X              X                 X   |         15 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : 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  43                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 7| 5| 7| 5| 6| 6| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 6| 3| 0| 0| 1| 3| 9| 3| 3| 5| 3| 3| 3| 3| 2| 3| 0| 9| 3| 1| 7| 7|             
                                           | 4| 3| 3| 9| 3| 2| 8| 6| 9| 5| 3| 3| 7| 3| 3| 4| 4| 6| 4| 3| 2| 3| 3| 8| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X                                                            |             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  A|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  A|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma             |                                                                          |             
      Hepatocellular Adenoma               |                                                                          |             
      Leukemia Mononuclear                 |       X  X  X  X        X  X     X        X  X     X     X     X     X  X|             
                                           |__________________________________________________________________________|             
   Mesentery                               | +  +           +     +        +     +  +                    +            |             
      Sarcoma                              |                                        X                                 |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              | X                                                                        |             
      Leukemia Mononuclear                 |                X                                         X               |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X                                         X              X|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X                                         X              X|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  44                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 7| 5| 7| 5| 6| 6| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 6| 3| 0| 0| 1| 3| 9| 3| 3| 5| 3| 3| 3| 3| 2| 3| 0| 9| 3| 1| 7| 7|             
                                           | 4| 3| 3| 9| 3| 2| 8| 6| 9| 5| 3| 3| 7| 3| 3| 4| 4| 6| 4| 3| 2| 3| 3| 8| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Tooth                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X                                         X              X|             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                   X                 X                                    |             
      Leukemia Mononuclear                 |          X     X        X                                X              X|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X                                X              X|             
      Pheochromocytoma Malignant           |                                                             X            |             
      Pheochromocytoma Benign              |                   X     X                 X                          X   |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |             X              X                                             |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X                                         X               |             
      Pars Distalis, Adenoma               |       X     X        X  X  X        X  X  X  X  X  X  X  X        X  X  X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +|             
      C-Cell, Adenoma                      |    X                    X     X           X                              |             
      C-Cell, Carcinoma                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  45                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 7| 5| 7| 5| 6| 6| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 6| 3| 0| 0| 1| 3| 9| 3| 3| 5| 3| 3| 3| 3| 2| 3| 0| 9| 3| 1| 7| 7|             
                                           | 4| 3| 3| 9| 3| 2| 8| 6| 9| 5| 3| 3| 7| 3| 3| 4| 4| 6| 4| 3| 2| 3| 3| 8| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mesothelioma Benign                  |       X                                                        X         |             
                                           |__________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                X         |             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                          X               |             
                                           |__________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                          X               |             
                                           |__________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X                                                         |             
      Mesothelioma Benign                  |       X                                                        X         |             
      Bilateral, Interstitial Cell, Adenoma| X  X  X           X           X  X  X  X  X     X     X        X     X   |             
      Interstitial Cell, Adenoma           |             X        X                             X        X     X      |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X                                X           X  X|             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                          +               |             
      Pancreatic, Leukemia Mononuclear     |                                                                          |             
      Renal, Leukemia Mononuclear          |                                                          X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | M  +  +  M  +  +  M  +  M  M  M  +  M  +  M  M  +  M  +  M  M  +  M  +  M|             
      Leukemia Mononuclear                 |       X     X  X                 X                                   X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  M  +  +  +  +  M  +  +  +  +  M  M  +  +  +  M  +  +  M  +  +  M  +  +|             
      Leukemia Mononuclear                 |       X  X  X  X           X                 X     X                 X  X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |       X  X  X  X           X     X                       X           X  X|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  46                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 7| 5| 7| 5| 6| 6| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 6| 3| 0| 0| 1| 3| 9| 3| 3| 5| 3| 3| 3| 3| 2| 3| 0| 9| 3| 1| 7| 7|             
                                           | 4| 3| 3| 9| 3| 2| 8| 6| 9| 5| 3| 3| 7| 3| 3| 4| 4| 6| 4| 3| 2| 3| 3| 8| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  M  M  +  M  M  M  +  M  M  M  M  M  +  M  M  M  M  M  +  M  M  M  +  +|             
      Leukemia Mononuclear                 |          X                                               X           X  X|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |       X  X  X  X        X  X     X        X  X     X     X     X     X  X|             
                                           |__________________________________________________________________________|             
   Thymus                                  | M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X  X                             X           X  X|             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | M  M  M  M  +  +  +  M  M  M  +  M  +  +  M  +  +  M  +  M  M  M  M  M  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Keratoacanthoma                      |                   X           X                             X            |             
      Sebaceous Gland, Adenoma             |                                                                          |             
      Subcutaneous Tissue, Fibroma         |             X                                                            |             
      Subcutaneous Tissue, Fibrosarcoma    |                                                                      X   |             
      Subcutaneous Tissue, Lipoma          |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Osteosarcoma                         |                   X                                                      |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X                                                         |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  47                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 4| 7| 5| 7| 5| 6| 6| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 6| 3| 0| 0| 1| 3| 9| 3| 3| 5| 3| 3| 3| 3| 2| 3| 0| 9| 3| 1| 7| 7|             
                                           | 4| 3| 3| 9| 3| 2| 8| 6| 9| 5| 3| 3| 7| 3| 3| 4| 4| 6| 4| 3| 2| 3| 3| 8| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
    CONTROL                                | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 RESPIRATORY SYSTEM - cont                 |                                                                          |             
                                           |                                                                          |             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |    X                                   X                                 |             
      Carcinoma, Metastatic, Preputial     |                                                                          |             
          Gland                            |                                                                          |             
      Carcinoma, Metastatic, Thyroid Gland |                                                                          |             
      Leukemia Mononuclear                 |       X  X  X  X        X  X     X        X  X           X           X  X|             
      Osteosarcoma, Metastatic, Bone       |                   X                                                      |             
      Pheochromocytoma Malignant,          |                                                                          |             
          Metastatic, Adrenal Medulla      |                                                             X            |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X                                                         |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X        X                    X           X           X  X|             
      Transitional Epithelium, Carcinoma   |                                                             X            |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X                                               X               |             
      Mesothelioma Benign                  |                                                                X         |             
      Transitional Epithelium, Papilloma   |                               X                                          |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |       X  X  X  X        X  X     X        X  X     X     X     X     X  X|             
      Mesothelioma Benign                  |       X                                                        X         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  48                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +   |  48        |
      Leukemia Mononuclear                 |                                                             X            |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  A  +   |  46        |
      Leukemia Mononuclear                 |                                                             X            |          2 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  A  +   |  45        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  A  +   |  45        |
      Leukemia Mononuclear                 |                                                             X            |          1 |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hepatocellular Carcinoma             |                                                                      X   |          1 |
      Hepatocellular Adenoma               |                   X                                                      |          1 |
      Leukemia Mononuclear                 | X           X     X     X     X     X     X     X     X     X  X         |         25 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                      +        +  +        +  +                           |  13        |
      Sarcoma                              |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                                          |          1 |
      Leukemia Mononuclear                 | X                             X                             X            |          5 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  49                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |                                                             X            |          4 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                             X            |          4 |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                        +                                 |   1        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                 X           X                             X            |          8 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                                          |          2 |
      Leukemia Mononuclear                 | X                 X           X           X     X           X            |         11 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                 X           X           X                 X            |         10 |
      Pheochromocytoma Malignant           |                                                                          |          1 |
      Pheochromocytoma Benign              |                                                                          |          4 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                   X        X                                             |          2 |
      Carcinoma                            |          X                                X                              |          4 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +  +   |  45        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                 X     X                                   X            |          6 |
      Pars Distalis, Adenoma               |       X  X  X  X  X        X  X  X  X     X  X  X  X  X           X      |         31 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  50                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  A  +  +  +  +  +  +   |  46        |
      C-Cell, Adenoma                      | X     X              X           X                       X               |          9 |
      C-Cell, Carcinoma                    |                                                       X                  |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Mesothelioma Benign                  |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Adenoma                              |                               X                                X         |          3 |
      Carcinoma                            |    X           X                                                     X   |          3 |
                                           |__________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  M  +   |  47        |
      Leukemia Mononuclear                 |                                                             X            |          2 |
                                           |__________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Mesothelioma Benign                  |                                                                          |          2 |
      Bilateral, Interstitial Cell, Adenoma| X     X              X        X  X  X           X     X     X  X     X   |         24 |
      Interstitial Cell, Adenoma           |    X     X  X     X     X  X                 X     X     X               |         14 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  51                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 | X                 X     X                 X     X           X            |         12 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |    +                                                        +            |   3        |
      Pancreatic, Leukemia Mononuclear     |                                                             X            |          1 |
      Renal, Leukemia Mononuclear          |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  M  M  +  +  +  +  +  +  +  +  M  +  +  M  M  +  M  +  +  +   |  29        |
      Leukemia Mononuclear                 | X                 X     X     X     X           X                        |         11 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  M  +   |  40        |
      Leukemia Mononuclear                 | X                 X     X     X           X     X     X     X            |         17 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 | X                 X           X           X     X     X     X            |         16 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  +  M  +  +  M  +  +  M  +  +  +  +  +  M  M  +  M  +  +  +  +  +  +   |  24        |
      Leukemia Mononuclear                 |                   X           X                 X     X     X            |          9 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X           X     X     X     X     X     X     X  X  X     X  X         |         26 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 | X                       X                 X     X           X            |         12 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | M  M  M  M  +  +  M  M  +  I  +  M  +  +  M  +  +  M  +  M  M  +  M  +   |  21        |
      Carcinoma                            |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Keratoacanthoma                      |          X                                                               |          4 |
      Sebaceous Gland, Adenoma             |          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  52                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Subcutaneous Tissue, Fibroma         |                                     X           X        X     X         |          5 |
      Subcutaneous Tissue, Fibrosarcoma    |                      X                                                   |          2 |
      Subcutaneous Tissue, Lipoma          |                                                             X            |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Osteosarcoma                         |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                             X            |          3 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Alveolar/Bronchiolar Adenoma         |                                                                          |          2 |
      Carcinoma, Metastatic, Preputial     |                                                                          |            |
          Gland                            |                X                                                         |          1 |
      Carcinoma, Metastatic, Thyroid Gland |                                                       X                  |          1 |
      Leukemia Mononuclear                 | X                 X     X     X     X     X     X     X     X            |         21 |
      Osteosarcoma, Metastatic, Bone       |                                                                          |          1 |
      Pheochromocytoma Malignant,          |                                                                          |            |
          Metastatic, Adrenal Medulla      |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  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  53                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 6| 7| 7| 7| 6| 6| 7| 7| 7| 7| 7| 7| 4| 6| 6| 7| 6| 7| 4| 7| 7| 6| 7|  |            |
                             DAY ON TEST   | 3| 6| 3| 3| 3| 1| 2| 3| 2| 3| 3| 3| 3| 6| 7| 1| 3| 6| 3| 6| 0| 3| 5| 3|  |            |
                                           | 3| 0| 3| 4| 4| 5| 4| 3| 1| 3| 4| 4| 4| 0| 7| 5| 3| 0| 4| 0| 9| 3| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    CONTROL                                | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                 X           X           X     X           X            |         13 |
      Transitional Epithelium, Carcinoma   |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                             X            |          3 |
      Mesothelioma Benign                  |                                                                          |          1 |
      Transitional Epithelium, Papilloma   |                                                                          |          1 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X           X     X     X     X     X     X     X  X  X     X  X         |         26 |
      Mesothelioma Benign                  |                                                                          |          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  54                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 7| 7| 5| 6| 7| 6| 7| 5| 6| 7| 7| 7| 6| 6| 5| 5| 7| 7| 3| 6| 7| 6| 7|             
                             DAY ON TEST   | 2| 8| 3| 3| 5| 4| 3| 8| 3| 0| 8| 3| 3| 3| 8| 4| 9| 2| 3| 3| 9| 6| 3| 1| 3|             
                                           | 6| 4| 3| 3| 1| 3| 3| 4| 3| 2| 1| 3| 4| 3| 1| 3| 3| 5| 3| 4| 0| 5| 3| 5| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
                                           |__________________________________________________________________________|             
   Mesentery                               |                         +                                +               |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Tongue                                  |                                                                      +   |             
      Squamous Cell Carcinoma              |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Tooth                                   |                                              +     +                     |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  55                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 7| 7| 5| 6| 7| 6| 7| 5| 6| 7| 7| 7| 6| 6| 5| 5| 7| 7| 3| 6| 7| 6| 7|             
                             DAY ON TEST   | 2| 8| 3| 3| 5| 4| 3| 8| 3| 0| 8| 3| 3| 3| 8| 4| 9| 2| 3| 3| 9| 6| 3| 1| 3|             
                                           | 6| 4| 3| 3| 1| 3| 3| 4| 3| 2| 1| 3| 4| 3| 1| 3| 3| 5| 3| 4| 0| 5| 3| 5| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                            X  X                    X                     |             
      Schwannoma Benign                    |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X     X  X                    X                    X|             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                      X                             X                    X|             
      Pheochromocytoma Malignant           |       X  X                                                               |             
      Pheochromocytoma Benign              |                                  X                       X               |             
      Bilateral, Pheochromocytoma Benign   |                                                                          |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |       X                             X                    X               |             
      Carcinoma                            |                                                                         X|             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  M  M  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X                          X  X                    X                     |             
      Pars Distalis, Adenoma               |    X     X  X     X  X  X           X  X  X           X  X  X  X  X  X   |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Bilateral, C-Cell, Adenoma           |       X                                                                  |             
      C-Cell, Adenoma                      |          X  X                                         X              X   |             
      C-Cell, Carcinoma                    |                                  X                                       |             
      Follicular Cell, Carcinoma           |                                           X                              |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Tissue NOS                              |       +                                                                  |             
      Pheochromocytoma Malignant,          |                                                                          |             
          Metastatic, Adrenal Medulla      |       X                                                                  |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  56                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 7| 7| 5| 6| 7| 6| 7| 5| 6| 7| 7| 7| 6| 6| 5| 5| 7| 7| 3| 6| 7| 6| 7|             
                             DAY ON TEST   | 2| 8| 3| 3| 5| 4| 3| 8| 3| 0| 8| 3| 3| 3| 8| 4| 9| 2| 3| 3| 9| 6| 3| 1| 3|             
                                           | 6| 4| 3| 3| 1| 3| 3| 4| 3| 2| 1| 3| 4| 3| 1| 3| 3| 5| 3| 4| 0| 5| 3| 5| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                            X                                             |             
                                           |__________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                    X                     |             
      Bilateral, Interstitial Cell, Adenoma| X     X        X              X  X     X     X  X     X  X              X|             
      Interstitial Cell, Adenoma           |    X     X        X                                                      |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X              X     X     X  X                    X                 X   |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                                                                          |             
      Lumbar, Leukemia Mononuclear         |                                                                          |             
      Pancreatic, Leukemia Mononuclear     |                                                                          |             
      Renal, Leukemia Mononuclear          |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  M  +  M  +  M  +  M  +  +  M  M  +  +  +  +  +  +  +  +  +  M  +  +  +|             
      Leukemia Mononuclear                 | X     X                    X                       X                 X  X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  M  +  +  +|             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  M  +  +  +  M  M  M  M  +  M  M  M  +  M  +  +  +  +  +  +  M  M  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  57                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 7| 7| 5| 6| 7| 6| 7| 5| 6| 7| 7| 7| 6| 6| 5| 5| 7| 7| 3| 6| 7| 6| 7|             
                             DAY ON TEST   | 2| 8| 3| 3| 5| 4| 3| 8| 3| 0| 8| 3| 3| 3| 8| 4| 9| 2| 3| 3| 9| 6| 3| 1| 3|             
                                           | 6| 4| 3| 3| 1| 3| 3| 4| 3| 2| 1| 3| 4| 3| 1| 3| 3| 5| 3| 4| 0| 5| 3| 5| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Leukemia Mononuclear                 | X     X  X                 X                       X                 X  X|             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma                      |                                                                          |             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +  +  I  +  +  +  +  +|             
      Leukemia Mononuclear                 | X                          X                       X                     |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  M  +  +  +  M  +  M  M  M  M  I  M  +  M  +  M  M  M  +  M  +  M  M  +|             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Adenoma                   |                                           X                              |             
      Keratoacanthoma                      |                                  X                    X                  |             
      Squamous Cell Carcinoma              |                                                                          |             
      Sebaceous Gland, Adenoma             |                                                                          |             
      Subcutaneous Tissue, Fibroma         |          X                             X                                 |             
      Subcutaneous Tissue, Fibrosarcoma    |                                                                          |             
      Subcutaneous Tissue, Fibrosarcoma,   |                                                                          |             
           Multiple                        |    X                                                                     |             
      Subcutaneous Tissue, Lipoma          |                                                                   X      |             
      Subcutaneous Tissue, Sarcoma         |                                     X                                    |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Osteosarcoma                         |                      X                                                   |             
                                           |__________________________________________________________________________|             
   Skeletal Muscle                         |                                                          +               |             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  58                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 6| 7| 7| 5| 6| 7| 6| 7| 5| 6| 7| 7| 7| 6| 6| 5| 5| 7| 7| 3| 6| 7| 6| 7|             
                             DAY ON TEST   | 2| 8| 3| 3| 5| 4| 3| 8| 3| 0| 8| 3| 3| 3| 8| 4| 9| 2| 3| 3| 9| 6| 3| 1| 3|             
                                           | 6| 4| 3| 3| 1| 3| 3| 4| 3| 2| 1| 3| 4| 3| 1| 3| 3| 5| 3| 4| 0| 5| 3| 5| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2|             
    10 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Leukemia Mononuclear                 |                            X                       X                     |             
                                           |__________________________________________________________________________|             
   Spinal Cord                             |                                                                          |             
      Leukemia Mononuclear                 |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Carcinoma       |          X                             X        X                        |             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
      Osteosarcoma, Metastatic, Bone       |                      X                                                   |             
      Pheochromocytoma Malignant,          |                                                                          |             
          Metastatic, Adrenal Medulla      |                                                                          |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                    X                     |             
      Respiratory Epithelium, Adenoma      |                   X  X           X                    X                  |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X     X  X           X     X  X                    X                 X   |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 | X     X  X     X     X     X  X                    X                 X  X|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                             Page  59                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                 X                                                      |          2 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X     X  X              X     X        X            |         20 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               | +                 +        +                                   +         |   6        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X              X                    X                     |          3 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Tongue                                  |                                                                          |   1        |
      Squamous Cell Carcinoma              |                                                                          |          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  60                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
   Tooth                                   |                                                                          |   2        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X        X                    X        X            |         11 |
      Schwannoma Benign                    |                         X                                                |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X        X                    X        X            |         13 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X                             X        X            |         10 |
      Pheochromocytoma Malignant           |                         X                                                |          3 |
      Pheochromocytoma Benign              |             X                             X              X           X   |          6 |
      Bilateral, Pheochromocytoma Benign   |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              | X           X                                                            |          5 |
      Carcinoma                            |    X                             X                                   X   |          4 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  M  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  M  +   |  42        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X        X                    X        X            |         12 |
      Pars Distalis, Adenoma               |    X  X  X  X           X  X     X  X  X  X     X  X     X  X     X  X   |         31 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +   |  47        |
      Bilateral, C-Cell, Adenoma           |                                                                          |          1 |
      C-Cell, Adenoma                      |    X                                                                     |          5 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  61                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
      C-Cell, Carcinoma                    |          X                                                               |          2 |
      Follicular Cell, Carcinoma           |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Tissue NOS                              |                                                                          |   1        |
      Pheochromocytoma Malignant,          |                                                                          |            |
          Metastatic, Adrenal Medulla      |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X                                                         |          1 |
                                           |__________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma                            |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X                                                         |          2 |
                                           |__________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X                                                         |          2 |
      Bilateral, Interstitial Cell, Adenoma| X        X  X     X        X        X     X  X        X  X     X         |         22 |
      Interstitial Cell, Adenoma           |    X           X     X  X     X                    X              X      |         10 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X        X              X     X        X            |         16 |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  62                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
   Lymph Node                              | +              +     +                                                   |   3        |
      Lumbar, Leukemia Mononuclear         |                      X                                                   |          1 |
      Pancreatic, Leukemia Mononuclear     | X              X                                                         |          2 |
      Renal, Leukemia Mononuclear          |                      X                                                   |          1 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +  M  +  +  M  +  M  +  M  +  M  +  +  +  +  M  +  +  +  +   |  36        |
      Leukemia Mononuclear                 | X        X        X  X     X                 X     X        X            |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +   |  45        |
      Leukemia Mononuclear                 | X        X     X  X  X     X  X              X     X        X            |         20 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X     X  X              X     X        X            |         20 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  M  +  M  +  M  M  +  M  +  M  +  +  +  M  M  +  +  +  M  +  M  +  +   |  28        |
      Leukemia Mononuclear                 | X                    X     X                       X        X            |         12 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hemangiosarcoma                      |                                                       X                  |          1 |
      Leukemia Mononuclear                 | X        X     X  X  X     X  X           X  X     X        X            |         21 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
      Leukemia Mononuclear                 | X        X     X  X  X        X                    X        X            |         11 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | M  M  +  M  +  M  M  M  M  +  +  +  +  M  M  M  +  M  +  M  +  M  M  +   |  20        |
      Carcinoma                            |                            X                                             |          1 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Basal Cell Adenoma                   |                                                                          |          1 |
      Keratoacanthoma                      |                                                    X                     |          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  63                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Squamous Cell Carcinoma              | X                                                                        |          1 |
      Sebaceous Gland, Adenoma             |                      X                                                   |          1 |
      Subcutaneous Tissue, Fibroma         |                                                                          |          2 |
      Subcutaneous Tissue, Fibrosarcoma    |                      X                                                   |          1 |
      Subcutaneous Tissue, Fibrosarcoma,   |                                                                          |            |
           Multiple                        |                                                                          |          1 |
      Subcutaneous Tissue, Lipoma          |                                                                          |          1 |
      Subcutaneous Tissue, Sarcoma         |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Osteosarcoma                         |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Skeletal Muscle                         |                                                                          |   1        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                               X                             X            |          4 |
                                           |__________________________________________________________________________|____________|
   Spinal Cord                             |                +                                                         |   1        |
      Leukemia Mononuclear                 |                X                                                         |          1 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Alveolar/Bronchiolar Carcinoma       |                                                                          |          3 |
      Leukemia Mononuclear                 | X        X     X  X  X        X              X     X        X            |         19 |
      Osteosarcoma, Metastatic, Bone       |                                                                          |          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  64                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 6| 7| 7| 6| 7| 7| 7| 6| 7| 7| 5| 7| 7| 4| 5| 6| 7| 6| 7| 5| 7|  |            |
                             DAY ON TEST   | 8| 3| 0| 4| 3| 0| 7| 1| 3| 3| 4| 3| 3| 0| 3| 3| 3| 6| 9| 3| 7| 3| 2| 3|  |            |
                                           | 0| 4| 0| 3| 3| 0| 7| 3| 4| 3| 8| 3| 3| 5| 4| 4| 5| 7| 5| 4| 8| 4| 0| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    10 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
      Pheochromocytoma Malignant,          |                                                                          |            |
          Metastatic, Adrenal Medulla      |                         X                                                |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X     X                                                   |          3 |
      Respiratory Epithelium, Adenoma      |                                              X                 X         |          6 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X                       X     X        X            |         16 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                X     X                             X        X            |          4 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X        X     X  X  X     X  X           X  X     X        X            |         21 |
 __________________________________________________________________________________________________________________________________ 
                                                                                                                                    
                         * : 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  65                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                      X   |             
      Polyp Adenomatous                    |    X                                                                     |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  I  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  A  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  A  +  +     +  +  +  A  +  +  +  +  +  +  A  +  A|             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  A  +  +  +  +  +  +  A  +  +|             
      Leukemia Mononuclear                 |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X  X                       X     X  X  X        X     X   |             
                                           |__________________________________________________________________________|             
   Mesentery                               | +                 +     +  +                                         +   |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
      Mixed Tumor Benign                   |                                                                          |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  M  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X                          X                              |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X                                   X                     |             
                                           |__________________________________________________________________________|             
   Tongue                                  |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  66                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
   Tooth                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X  X                       X     X              X     X   |             
      Schwannoma Benign                    |                                                          X               |             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                         X                                                |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Leukemia Mononuclear                 |          X  X  X  X                       X        X  X              X   |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X  X                       X        X  X              X   |             
      Pheochromocytoma Malignant           |                                                                          |             
      Pheochromocytoma Benign              |    X           X                                      X                  |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |             X                                                            |             
      Carcinoma                            |       X  X                                                               |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  +  +  M  +  +  +  +  +  M     +  +  +  +  M  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  M  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X  X                       X        X  X              X   |             
      Pars Distalis, Adenoma               | X  X  X        X  X  X     X  X        X  X  X  X  X  X  X     X  X     X|             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  M  +  +  +  +  +  +     +  +  +  +  +  +  +  +  M  +  +  +  +|             
      C-Cell, Adenoma                      |          X     X                                                         |             
      C-Cell, Carcinoma                    |                      X                                                   |             
      Follicular Cell, Adenoma             |                                                                          |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  67                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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|             
 __________________________________________|__________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
                                           |__________________________________________________________________________|             
   Peritoneum                              |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mesothelioma Benign                  |                                              X                           |             
                                           |__________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                   X      |             
      Carcinoma                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +     +  +  +  A  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                    X                     |             
      Leukemia Mononuclear                 |                                                                      X   |             
                                           |__________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                      X   |             
      Mesothelioma Benign                  |                                              X                           |             
      Bilateral, Interstitial Cell, Adenoma| X  X     X                          X  X                    X     X  X   |             
      Interstitial Cell, Adenoma           |             X  X  X  X  X  X              X     X        X               |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |       X     X  X  X                       X     X  X  X              X   |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |          +        +                       +           +                  |             
      Deep Cervical, Leukemia Mononuclear  |                                                                          |             
      Iliac, Leukemia Mononuclear          |                                                                          |             
      Pancreatic, Leukemia Mononuclear     |          X        X                                   X                  |             
      Renal, Leukemia Mononuclear          |                                           X           X                  |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  +  +  +  +  +  M  M  M  +  +     +  +  +  M  +  M  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X                          X     X     X        X     X   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  68                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | +  +  +  M  +  +  +  +  M  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X     X  X  X                       X     X  X  X        X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X  X                       X     X  X  X        X     X   |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  +  +  +  +  +  +  M  +  +  +     +  +  +  +  +  M  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X  X                       X     X     X        X     X   |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X  X  X                    X     X  X  X        X  X  X   |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  M  +  +  +  +     +  +  M  +  +  +  M  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |       X     X  X                                   X           X     X   |             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                         X                                                |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | M  M  M  +  +  M  +  +  M  M  +     M  +  +  M  M  +  +  +  +  +  +  M  M|             
      Carcinoma                            |                                        X                                 |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Basal Cell Adenoma                   |                X                          X                              |             
      Keratoacanthoma                      |                      X                                                   |             
      Sebaceous Gland, Carcinoma           |                      X                                                   |             
      Subcutaneous Tissue, Fibroma         |                                           X              X               |             
      Subcutaneous Tissue, Lipoma          |                   X                                   X                  |             
      Subcutaneous Tissue, Sarcoma         |                                                                          |             
      Subcutaneous Tissue, Schwannoma      |                                                                          |             
          Malignant                        |                         X                                                |             
 _____________________________________________________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  69                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X                                                         |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                         X                                                |             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Alveolar/Bronchiolar Adenoma         |                                                          X               |             
      Carcinoma, Metastatic, Zymbal's Gland|                                                                          |             
      Leukemia Mononuclear                 |    X  X  X  X  X  X                       X     X  X  X        X     X   |             
      Neuroblastoma, Metastatic, Nose      |                                                                          |             
      Pheochromocytoma Malignant,          |                                                                          |             
          Metastatic, Adrenal Medulla      |                                                                          |             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                         X                                                |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X                          X     X  X                 X   |             
      Olfactory Epithelium, Neuroblastoma  |                                                                          |             
      Respiratory Epithelium, Adenoma      |    X                 X     X                          X                  |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Zymbal's Gland                          |                                                                          |             
      Carcinoma                            |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  70                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 7| 6| 5| 6| 7| 7| 6| 7| 5| 0| 7| 7| 7| 4| 6| 6| 7| 7| 7| 5| 7| 6| 5|             
                             DAY ON TEST   | 3| 3| 3| 8| 6| 8| 1| 3| 1| 3| 4| 2| 3| 3| 3| 8| 3| 6| 3| 3| 3| 8| 2| 0| 2|             
                                           | 3| 3| 3| 5| 0| 1| 0| 4| 3| 4| 7| 9| 3| 4| 4| 9| 0| 3| 4| 3| 4| 2| 8| 0| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 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|             
    30 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X  X                       X        X  X        X     X   |             
      Schwannoma Malignant, Metastatic,    |                                                                          |             
           Skin                            |                         X                                                |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                           X           X                  |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |    X  X  X  X  X  X  X                    X     X  X  X        X  X  X   |             
      Mesothelioma Benign                  |                                              X                           |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  71                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Polyp Adenomatous                    |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  43        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  45        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X        X  X     X  X     X              X     X              X  X      |         22 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               | +                                      +              +  +               |   9        |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                      X                    X                              |          2 |
      Mixed Tumor Benign                   |                            X                                             |          1 |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 |                   X                                                      |          4 |
                                           |__________________________________________________________________________|____________|
   Tongue                                  |                                     +                                    |   1        |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |       +                             +        +           +               |   4        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X                 X  X                    X                    X         |         13 |
      Schwannoma Benign                    |                                                                      X   |          2 |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Adenoma                              |                                                                X         |          1 |
      Leukemia Mononuclear                 |                   X  X     X              X     X              X         |         14 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |                   X  X     X              X     X              X         |         14 |
      Pheochromocytoma Malignant           |    X                                                                     |          1 |
      Pheochromocytoma Benign              |                      X        X     X                                    |          6 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Adenoma                              |                   X                                X                     |          3 |
      Carcinoma                            |       X  X                                                               |          4 |
                                           |__________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  M  M  +  +  +  +  M  +  +  +  +  +  +  +   |  42        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
      Leukemia Mononuclear                 | X                 X  X     X              X                    X         |         12 |
      Pars Distalis, Adenoma               | X     X  X  X  X     X  X           X  X  X  X     X  X  X  X  X  X      |         35 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +   |  45        |
      C-Cell, Adenoma                      |                   X                          X                           |          4 |
      C-Cell, Carcinoma                    |                                                                          |          1 |
      Follicular Cell, Adenoma             |                                                                   X      |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Peritoneum                              |       +                                                                  |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Mesothelioma Benign                  |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +   |  47        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                   X      |          1 |
                                           |__________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Carcinoma                            |                                                                          |          1 |
      Leukemia Mononuclear                 |                      X                                                   |          2 |
                                           |__________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Mesothelioma Benign                  |                                                                          |          1 |
      Bilateral, Interstitial Cell, Adenoma|       X              X     X  X     X  X     X     X  X  X     X         |         19 |
      Interstitial Cell, Adenoma           | X  X     X     X  X                             X           X        X   |         17 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  74                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X                 X  X     X              X     X              X         |         16 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                   +  +                    +                    +         |   8        |
      Deep Cervical, Leukemia Mononuclear  |                                           X                              |          1 |
      Iliac, Leukemia Mononuclear          |                                           X                              |          1 |
      Pancreatic, Leukemia Mononuclear     |                   X  X                                         X         |          6 |
      Renal, Leukemia Mononuclear          |                                           X                              |          3 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +  M  +  M  M  M  +  +  +  +  +  M  +  +  +  +  +  +  +  +   |  38        |
      Leukemia Mononuclear                 | X        X        X                       X     X              X         |         16 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  46        |
      Leukemia Mononuclear                 | X        X  X     X  X     X              X     X              X         |         20 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X        X  X     X  X     X              X     X              X         |         21 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  M  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  44        |
      Leukemia Mononuclear                 | X        X        X  X     X              X     X              X         |         19 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X        X  X     X  X     X              X     X              X  X      |         24 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  +  +  M  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +   |  43        |
      Leukemia Mononuclear                 |                   X  X                    X     X              X         |         11 |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  M  +  +  +  +  +  +  M  M  +  +  M  M  +  +  M  M  +  +   |  30        |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  75                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
      Carcinoma                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Basal Cell Adenoma                   |                                                                          |          2 |
      Keratoacanthoma                      |                                                                X         |          2 |
      Sebaceous Gland, Carcinoma           |                                                                          |          1 |
      Subcutaneous Tissue, Fibroma         |                                                                          |          2 |
      Subcutaneous Tissue, Lipoma          |                                                             X            |          3 |
      Subcutaneous Tissue, Sarcoma         |    X                                                  X                  |          2 |
      Subcutaneous Tissue, Schwannoma      |                                                                          |            |
          Malignant                        |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                           X                    X         |          4 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Alveolar/Bronchiolar Adenoma         |                                                                          |          1 |
      Carcinoma, Metastatic, Zymbal's Gland|                         X                                                |          1 |
      Leukemia Mononuclear                 | X        X        X  X     X              X     X              X         |         20 |
      Neuroblastoma, Metastatic, Nose      |                                  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  76                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
      Pheochromocytoma Malignant,          |                                                                          |            |
          Metastatic, Adrenal Medulla      |    X                                                                     |          1 |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                   X                             X                        |          8 |
      Olfactory Epithelium, Neuroblastoma  |                                  X     X     X     X                     |          4 |
      Respiratory Epithelium, Adenoma      |    X           X                                   X     X               |          8 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                 X                        |          1 |
                                           |__________________________________________________________________________|____________|
   Zymbal's Gland                          |                         +                                                |   1        |
      Carcinoma                            |                         X                                                |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X                 X  X                    X     X              X         |         14 |
      Schwannoma Malignant, Metastatic,    |                                                                          |            |
           Skin                            |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                      X                                                   |          3 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 | X        X  X     X  X     X              X     X              X  X      |         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  77                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 6| 7| 6| 7| 5| 6| 6| 7| 7| 7| 7| 4| 7| 7| 6| 6| 6| 7| 7| 7| 7| 6| 5| 7|  |            |
                             DAY ON TEST   | 4| 3| 5| 3| 6| 8| 1| 0| 3| 3| 3| 3| 3| 3| 4| 7| 1| 3| 3| 3| 3| 8| 7| 3|  |            |
                                           | 3| 3| 0| 4| 3| 5| 5| 7| 3| 4| 3| 3| 3| 4| 3| 7| 3| 3| 3| 3| 3| 1| 4| 3|  |            |
 _____________________________________________________________________________________________________________________      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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               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|  |     A      |
    30 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS - cont                   |                                                                          |            |
                                           |                                                                          |            |
      Mesothelioma Benign                  |                                                                          |          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  78                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 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                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Colon                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Large, Cecum                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Intestine Small, Jejunum                | +  +  A  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma                            |                                                                          |             
      Leiomyosarcoma                       |                      X                                                   |             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Intestine Small, Ileum                  | +  +  A  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X                                          |             
                                           |__________________________________________________________________________|             
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hepatocellular Carcinoma             |          X                                                               |             
      Hepatocellular Adenoma               |    X                                                     X     X         |             
      Leukemia Mononuclear                 |          X  X  X              X  X     X           X     X               |             
                                           |__________________________________________________________________________|             
   Mesentery                               |       +              +     +                    +                        |             
      Hemangiosarcoma                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                                          |             
      Carcinoma                            |       X                                                                  |             
      Leukemia Mononuclear                 |             X  X              X                                          |             
                                           |__________________________________________________________________________|             
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X                 X                                          |             
                                           |__________________________________________________________________________|             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  79                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ALIMENTARY SYSTEM - cont                  |                                                                          |             
                                           |                                                                          |             
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X                 X                                          |             
                                           |__________________________________________________________________________|             
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Tooth                                   |                         +                                   +            |             
 _____________________________________________________________________________________________________________________|             
 CARDIOVASCULAR SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X                                       |             
 _____________________________________________________________________________________________________________________|             
 ENDOCRINE SYSTEM                          |                                                                          |             
                                           |__________________________________________________________________________|             
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                          X               |             
      Leukemia Mononuclear                 |          X  X  X              X  X                       X               |             
                                           |__________________________________________________________________________|             
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X     X              X                                          |             
      Pheochromocytoma Malignant           |                                                                          |             
      Pheochromocytoma Benign              |                X     X                                   X        X      |             
                                           |__________________________________________________________________________|             
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              | X                                                                        |             
      Carcinoma                            |                                                          X  X            |             
                                           |__________________________________________________________________________|             
   Parathyroid Gland                       | +  +  M  +  +  +  +  +  +  M  +  +  +  +  M  +  +  +  +  +  +  +  +  M  +|             
                                           |__________________________________________________________________________|             
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X                                       |             
      Pars Distalis, Adenoma               |       X     X  X  X  X  X  X     X  X        X  X        X     X  X  X   |             
                                           |__________________________________________________________________________|             
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X                                          |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  80                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 ENDOCRINE SYSTEM - cont                   |                                                                          |             
                                           |                                                                          |             
      C-Cell, Adenoma                      |          X                       X                                       |             
      C-Cell, Carcinoma                    |    X                                                                     |             
 _____________________________________________________________________________________________________________________|             
 GENERAL BODY SYSTEM                       |                                                                          |             
    None                                   |                                                                          |             
 _____________________________________________________________________________________________________________________|             
 GENITAL SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X                                          |             
                                           |__________________________________________________________________________|             
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Adenoma                              |                                                             X            |             
      Carcinoma                            |                                                                         X|             
      Leukemia Mononuclear                 |             X                                                            |             
                                           |__________________________________________________________________________|             
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                               X                                          |             
                                           |__________________________________________________________________________|             
   Seminal Vesicle                         | +  +  A  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X              X                                          |             
                                           |__________________________________________________________________________|             
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Mesothelioma Benign                  |                                                                      X   |             
      Bilateral, Interstitial Cell, Adenoma|             X     X     X  X  X  X     X           X  X  X  X        X  X|             
      Interstitial Cell, Adenoma           | X  X           X                                X                 X      |             
 _____________________________________________________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X                       X               |             
                                           |__________________________________________________________________________|             
   Lymph Node                              |                +              +                                          |             
      Leukemia Mononuclear                 |                               X                                          |             
      Deep Cervical, Leukemia Mononuclear  |                X                                                         |             
      Pancreatic, Leukemia Mononuclear     |                X                                                         |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  81                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |             
                                           |                                                                          |             
      Renal, Leukemia Mononuclear          |                               X                                          |             
                                           |__________________________________________________________________________|             
   Lymph Node, Bronchial                   | +  +  +  +  +  +  M  +  M  +  +  +  +  M  M  +  +  +  M  +  +  +  M  +  M|             
      Leukemia Mononuclear                 |          X  X  X              X  X                       X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mandibular                  | M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  M  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X     X                 X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X     X                 X               |             
                                           |__________________________________________________________________________|             
   Lymph Node, Mediastinal                 | +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X     X                 X               |             
                                           |__________________________________________________________________________|             
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Hemangiosarcoma                      |                                           X                              |             
      Leukemia Mononuclear                 |          X  X  X              X  X     X           X     X               |             
                                           |__________________________________________________________________________|             
   Thymus                                  | +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X              X                                          |             
 _____________________________________________________________________________________________________________________|             
 INTEGUMENTARY SYSTEM                      |                                                                          |             
                                           |__________________________________________________________________________|             
   Mammary Gland                           | +  M  M  +  +  +  +  +  +  M  +  +  +  M  +  +  M  +  +  M  M  +  M  +  M|             
      Fibroadenoma                         |                                                    X                     |             
                                           |__________________________________________________________________________|             
   Skin                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Keratoacanthoma                      |                      X                                                   |             
      Sebaceous Gland, Adenoma             |                                                                          |             
      Subcutaneous Tissue, Fibroma         |                                                          X     X         |             
      Subcutaneous Tissue, Fibrosarcoma    |                                                                          |             
      Subcutaneous Tissue, Leukemia        |                                                                          |             
          Mononuclear                      |                               X                                          |             
      Subcutaneous Tissue, Neural Crest    |                                                                          |             
          Tumor                            |             X                                                            |             
 _____________________________________________________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  82                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 MUSCULOSKELETAL SYSTEM                    |                                                                          |             
                                           |__________________________________________________________________________|             
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 NERVOUS SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                X              X                                          |             
      Neuroblastoma, Metastatic, Nose      |                                              X                           |             
 _____________________________________________________________________________________________________________________|             
 RESPIRATORY SYSTEM                        |                                                                          |             
                                           |__________________________________________________________________________|             
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
                                           |__________________________________________________________________________|             
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Carcinoma, Metastatic, Zymbal's Gland|                                                       X                  |             
      Leukemia Mononuclear                 |          X  X  X              X  X     X                 X               |             
      Neuroblastoma, Metastatic, Nose      |                                              X                           |             
                                           |__________________________________________________________________________|             
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  A  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X              X  X                                       |             
      Olfactory Epithelium, Neuroblastoma  |                                              X                           |             
      Respiratory Epithelium, Adenoma      |                X  X           X     X           X  X  X  X               |             
                                           |__________________________________________________________________________|             
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
 _____________________________________________________________________________________________________________________|             
 SPECIAL SENSES SYSTEM                     |                                                                          |             
                                           |__________________________________________________________________________|             
   Eye                                     | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |                                                                          |             
                                           |__________________________________________________________________________|             
   Zymbal's Gland                          |                                                       +                  |             
      Bilateral, Carcinoma                 |                                                       X                  |             
 _____________________________________________________________________________________________________________________|             
 URINARY SYSTEM                            |                                                                          |             
                                           |__________________________________________________________________________|             
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X                                       |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  83                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 _____________________________________________________________________________________________________________________              
                                           | 7| 7| 6| 6| 7| 6| 7| 6| 5| 7| 7| 6| 6| 7| 2| 4| 7| 7| 6| 7| 7| 7| 7| 7| 4|             
                             DAY ON TEST   | 3| 3| 6| 3| 1| 8| 3| 5| 6| 3| 2| 7| 2| 3| 4| 6| 3| 3| 8| 3| 3| 3| 3| 3| 9|             
                                           | 3| 3| 0| 2| 2| 5| 4| 9| 0| 3| 2| 1| 4| 3| 5| 9| 4| 3| 5| 4| 4| 4| 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|             
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|             
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|             
    60 PPM                                 | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2|             
                                           | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5|             
 __________________________________________|__________________________________________________________________________|             
 URINARY SYSTEM - cont                     |                                                                          |             
                                           |                                                                          |             
      Renal Tubule, Carcinoma              |                                                                          |             
                                           |__________________________________________________________________________|             
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |             X  X              X                                          |             
      Transitional Epithelium, Papilloma   |                                                          X               |             
 __________________________________________|__________________________________________________________________________|             
 SYSTEMIC LESIONS                          |                                                                          |             
                                            __________________________________________________________________________|             
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +|             
      Leukemia Mononuclear                 |          X  X  X              X  X     X           X     X               |             
      Mesothelioma Benign                  |                                                                      X   |             
 __________________________________________|__________________________________________________________________________|             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page  84                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
                                           |__________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Carcinoma                            |          X                                                               |          1 |
      Leiomyosarcoma                       |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |                                                       X                  |          2 |
                                           |__________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hepatocellular Carcinoma             |                                                                          |          1 |
      Hepatocellular Adenoma               |                                                                          |          3 |
      Leukemia Mononuclear                 | X                    X  X  X        X  X              X           X  X   |         17 |
                                           |__________________________________________________________________________|____________|
   Mesentery                               |                               +     +           +                    +   |   8        |
      Hemangiosarcoma                      |                                     X                                    |          1 |
                                           |__________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |    X                          X                                          |          2 |
      Carcinoma                            |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                                          |          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  85                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ALIMENTARY SYSTEM - cont                  |                                                                          |            |
                                           |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          2 |
                                           |__________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                       X                  |          1 |
                                           |__________________________________________________________________________|____________|
   Tooth                                   |                                                                          |   2        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                         X                             X           X      |          8 |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |          X                                                               |          2 |
      Leukemia Mononuclear                 |                            X                          X           X      |          9 |
                                           |__________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                            X                          X           X      |          6 |
      Pheochromocytoma Malignant           |                                     X                                    |          1 |
      Pheochromocytoma Benign              |       X           X     X           X                                    |          8 |
                                           |__________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                     X                                    |          2 |
      Carcinoma                            |                   X        X                                             |          4 |
                                           |__________________________________________________________________________|____________|
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 ENDOCRINE SYSTEM - cont                   |                                                                          |            |
                                           |                                                                          |            |
   Parathyroid Gland                       | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  +  +  +  +   |  44        |
                                           |__________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X  X                             X                  |          8 |
      Pars Distalis, Adenoma               | X  X  X        X           X  X  X  X     X  X           X  X  X     X   |         29 |
                                           |__________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +  +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      C-Cell, Adenoma                      |                      X        X                                          |          4 |
      C-Cell, Carcinoma                    |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Adenoma                              |                                                                          |          1 |
      Carcinoma                            |                                                                          |          1 |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                          |          1 |
                                           |__________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  47        |
      Leukemia Mononuclear                 |                                                                          |          3 |
                                           |__________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Mesothelioma Benign                  |                                                                          |          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  87                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 GENITAL SYSTEM - cont                     |                                                                          |            |
                                           |                                                                          |            |
      Bilateral, Interstitial Cell, Adenoma|                   X  X  X  X  X                          X  X            |         20 |
      Interstitial Cell, Adenoma           | X           X                       X  X        X                 X      |         11 |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X  X  X                          X           X      |         11 |
                                           |__________________________________________________________________________|____________|
   Lymph Node                              |                            +                          +                  |   4        |
      Leukemia Mononuclear                 |                                                                          |          1 |
      Deep Cervical, Leukemia Mononuclear  |                                                                          |          1 |
      Pancreatic, Leukemia Mononuclear     |                                                       X                  |          2 |
      Renal, Leukemia Mononuclear          |                            X                                             |          2 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  M  +  +  +  +  +  +  +  +  +  M  +  M  +  +  M  +  M  M  M   |  35        |
      Leukemia Mononuclear                 |                      X  X  X        X  X              X                  |         12 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +  +  M  +  +  +  +   |  44        |
      Leukemia Mononuclear                 |                      X  X  X           X              X           X  X   |         14 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X  X  X        X  X              X           X  X   |         15 |
                                           |__________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  +  +  M  +  +  +  +  +  +  +  +  +  M  +  M  +  +  M  +  M  M  +   |  41        |
      Leukemia Mononuclear                 |                      X  X  X        X  X              X              X   |         14 |
                                           |__________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Hemangiosarcoma                      |                                                                          |          1 |
      Leukemia Mononuclear                 | X                    X  X  X        X  X              X           X  X   |         17 |
                                           |__________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +  +  M  +  +  +  +  +  +  +  +  +  +  +  +  +  +  M  +  +   |  46        |
      Leukemia Mononuclear                 |                         X  X        X                 X           X      |          8 |
 _____________________________________________________________________________________________________________________|____________|
                                                                                                                                    
                         * : 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  88                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +  M  M  +  M  +  +  +  M  +  M  M  M  M  M  +  M  +  M  M   |  28        |
      Fibroadenoma                         |                      X                                   X               |          3 |
                                           |__________________________________________________________________________|____________|
   Skin                                    | +  +  +  +  +  +  +  +  I  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Keratoacanthoma                      | X                                                                        |          2 |
      Sebaceous Gland, Adenoma             |                                                                      X   |          1 |
      Subcutaneous Tissue, Fibroma         |                                                                          |          2 |
      Subcutaneous Tissue, Fibrosarcoma    |                                                    X        X            |          2 |
      Subcutaneous Tissue, Leukemia        |                                                                          |            |
          Mononuclear                      |                                                                          |          1 |
      Subcutaneous Tissue, Neural Crest    |                                                                          |            |
          Tumor                            |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                         X                                                |          3 |
      Neuroblastoma, Metastatic, Nose      |             X                                                            |          2 |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
                                           |__________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Carcinoma, Metastatic, Zymbal's Gland|                                                                          |          1 |
      Leukemia Mononuclear                 |                      X  X  X        X  X              X           X      |         14 |
      Neuroblastoma, Metastatic, Nose      |                                                                          |          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  89                                                               
                                                                                                                                   
NTP Experiment-Test: 05110-02                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04  
Study Type: CHRONIC                                            NAPHTHALENE                                        Date: 08/15/00    
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 08:27:54    
                                                                                                                                    
 __________________________________________________________________________________________________________________________________ 
                                           | 7| 7| 5| 4| 3| 5| 7| 7| 6| 7| 7| 5| 7| 7| 5| 5| 7| 5| 5| 7| 6| 6| 6| 7|  |            |
                             DAY ON TEST   | 0| 3| 6| 1| 9| 2| 3| 3| 5| 0| 3| 3| 3| 3| 5| 7| 3| 7| 2| 3| 0| 3| 0| 3|  |            |
                                           | 3| 3| 2| 9| 9| 6| 4| 4| 7| 7| 4| 9| 3| 3| 2| 2| 3| 5| 7| 3| 0| 9| 8| 3|  |            |
 __________________________________________|__________________________________________________________________________|     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|  |     O      |
   FISCHER 344 RATS MALE                   | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0|  |     T      |
                               ANIMAL ID   | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6|  |     A      |
    60 PPM                                 | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4|  |     L      |
                                           | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9|  |            |
 _____________________________________________________________________________________________________________________|____________|
 RESPIRATORY SYSTEM - cont                 |                                                                          |            |
                                           |                                                                          |            |
   Nose                                    | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                                                                          |          4 |
      Olfactory Epithelium, Neuroblastoma  |             X                    X                                       |          3 |
      Respiratory Epithelium, Adenoma      |       X                                X  X     X  X           X     X   |         15 |
                                           |__________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Eye                                     | +  +  +  +  +  +     +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  48        |
      Leukemia Mononuclear                 |                         X                                                |          1 |
                                           |__________________________________________________________________________|____________|
   Zymbal's Gland                          |                                                                          |   1        |
      Bilateral, Carcinoma                 |                                                                          |          1 |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |__________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                      X  X  X        X                 X           X      |         11 |
      Renal Tubule, Carcinoma              |    X                                                                     |          1 |
                                           |__________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 |                                                                   X      |          4 |
      Transitional Epithelium, Papilloma   |                                        X                                 |          2 |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +  +   |  49        |
      Leukemia Mononuclear                 | X                    X  X  X        X  X              X           X  X   |         17 |
      Mesothelioma Benign                  |                                                                          |          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  90                                                               
                                                                                                                                   
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                                  ----------              END OF REPORT             ----------                                      
                                  ------------------------------------------------------------                                      
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.