https://ntp.niehs.nih.gov/go/3732

TDMS Study 05123-06 Pathology Tables

NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37
                                                       66 WEEK SACRIFICE
       Facility:  Lovelace Inhalation Toxicology Research Institute
       Chemical CAS #:  1313-99-1
       Lock Date:  04/19/94
       Cage Range:  All
       Reasons For Removal:    25017 Scheduled Sacrifice
       Removal Date Range:     07/26/89 - 07/27/89
       Treatment Groups:       Include All
Note:  Animals arranged according to CID number
                                                              Page   1
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 1| 1| 1| 1| 1|                                                           |     A      |
    0 MG/M3                                | 0| 1| 2| 3| 4|                                                           |     L      |
      LUNGTX                               | 7| 7| 5| 3| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Tongue                                  | +                                                                        |   1        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  +  +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   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   2                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 1| 1| 1| 1| 1|                                                           |     A      |
    0 MG/M3                                | 0| 1| 2| 3| 4|                                                           |     L      |
      LUNGTX                               | 7| 7| 5| 3| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | I  M  M  +  +                                                            |   2        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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   3                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 2| 2| 2| 3| 3|                                                           |     A      |
    1.25MGM3                               | 4| 4| 8| 0| 1|                                                           |     L      |
      LUNGTX                               | 2| 3| 3| 1| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
      Hepatocellular Adenoma               | X                                                                        |          1 |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  M  +  +  +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Tissue NOS                              |       +                                                                  |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   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   4                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 2| 2| 2| 3| 3|                                                           |     A      |
    1.25MGM3                               | 4| 4| 8| 0| 1|                                                           |     L      |
      LUNGTX                               | 2| 3| 3| 1| 0|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  +  +  M                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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   5                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 4| 4| 4| 4| 4|                                                           |     A      |
    2.5MG/M3                               | 6| 7| 7| 7| 7|                                                           |     L      |
      LUNGTX                               | 2| 1| 4| 6| 7|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  +  M  +  +                                                            |   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   6                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 4| 4| 4| 4| 4|                                                           |     A      |
    2.5MG/M3                               | 6| 7| 7| 7| 7|                                                           |     L      |
      LUNGTX                               | 2| 1| 4| 6| 7|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
      Alveolar/Bronchiolar Adenoma         |          X                                                               |          1 |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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   7                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 5| 5| 6| 6| 6|                                                           |     A      |
    5.0MG/M3                               | 7| 9| 0| 1| 3|                                                           |     L      |
      LUNGTX                               | 6| 7| 4| 8| 3|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  M  +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Clitoral Gland                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Ovary                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Uterus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  M  M  +  +                                                            |   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   8                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 9| 9| 9| 9| 9|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE FEMALE                      | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 5| 5| 6| 6| 6|                                                           |     A      |
    5.0MG/M3                               | 7| 9| 0| 1| 3|                                                           |     L      |
      LUNGTX                               | 6| 7| 4| 8| 3|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  M  +                                                            |   4        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Skin                                    |    +                                                                     |   1        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Ear                                     |       +                                                                  |   1        |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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   9                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |     A      |
    O MG/M3                                | 1| 4| 5| 5| 6|                                                           |     L      |
      LUNGTX                               | 7| 0| 6| 9| 9|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
      Hepatocellular Carcinoma             |          X                                                               |          1 |
      Hepatocellular Adenoma               |    X                                                                     |          1 |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
      Follicular Cell, Adenoma             | X                                                                        |          1 |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Penis                                   |             +                                                            |   1        |
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC 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  10                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 0| 0| 0| 0| 0|                                                           |     A      |
    O MG/M3                                | 1| 4| 5| 5| 6|                                                           |     L      |
      LUNGTX                               | 7| 0| 6| 9| 9|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node                              |             +                                                            |   1        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  +  M  M                                                            |   3        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
      Alveolar/Bronchiolar Adenoma         | X                                                                        |          1 |
      Hepatocellular Carcinoma, Metastatic |          X                                                               |          1 |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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  11                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 1| 1| 1| 2| 2|                                                           |     A      |
    1.25MGM3                               | 7| 8| 9| 2| 3|                                                           |     L      |
      LUNGTX                               | 1| 1| 3| 7| 2|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | M  +  +  +  +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
      Hepatocellular Carcinoma             | X                                                                        |          1 |
      Hepatocellular Adenoma               |          X                                                               |          1 |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | M  +  +  +  M                                                            |   3        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Tissue NOS                              | +                                                                        |   1        |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   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  12                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 1| 1| 1| 2| 2|                                                           |     A      |
    1.25MGM3                               | 7| 8| 9| 2| 3|                                                           |     L      |
      LUNGTX                               | 1| 1| 3| 7| 2|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | M  M  M  M  +                                                            |   1        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  M  +                                                            |   4        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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  13                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 3| 3| 3| 3| 3|                                                           |     A      |
    2.5MG/M3                               | 6| 7| 8| 9| 9|                                                           |     L      |
      LUNGTX                               | 1| 8| 5| 3| 7|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
      Hepatocellular Carcinoma             |    X                                                                     |          1 |
      Hepatocellular Adenoma               |       X  X                                                               |          2 |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | M  +  +  +  +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   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  14                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 3| 3| 3| 3| 3|                                                           |     A      |
    2.5MG/M3                               | 6| 7| 8| 9| 9|                                                           |     L      |
      LUNGTX                               | 1| 8| 5| 3| 7|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  +  M  M  +                                                            |   3        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  M  +                                                            |   4        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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  15                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 4| 4| 5| 5| 5|                                                           |     A      |
    5.0MG/M3                               | 9| 9| 0| 1| 5|                                                           |     L      |
      LUNGTX                               | 2| 3| 4| 8| 1|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 ALIMENTARY SYSTEM                         |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Esophagus                               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Gallbladder                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Colon                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Rectum                 | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Large, Cecum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Duodenum               | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Jejunum                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Intestine Small, Ileum                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Liver                                   | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Pancreas                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Salivary Glands                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Forestomach                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Stomach, Glandular                      | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 CARDIOVASCULAR SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Heart                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 ENDOCRINE SYSTEM                          |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Adrenal Cortex                          | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Adrenal Medulla                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Islets, Pancreatic                      | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Parathyroid Gland                       | +  +  +  +  M                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Pituitary Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thyroid Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 GENERAL BODY SYSTEM                       |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 GENITAL SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Epididymis                              | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Preputial Gland                         | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Prostate                                | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Seminal Vesicle                         | +  +  +     +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Testes                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 HEMATOPOIETIC SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Blood                                   |       +                                                                  |   1        |
                                            __________________________________________________________________________|____________|
   Bone Marrow                             | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Bronchial                   | +  +  +  +  +                                                            |   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  16                                                               
NTP Experiment-Test: 05123-06                        NEOPLASMS BY INDIVIDUAL ANIMAL                               Report: PEIRPT04
Study Type: CHRONIC                                            NICKEL OXIDE                                       Date: 04/07/97  
Route: RESPIRATORY EXPOSURE WHOLE BODY                                                                            Time: 15:25:37  
 __________________________________________________________________________________________________________________________________ 
                                           | 4| 4| 4| 4| 4|                                                           |            |
                             DAY ON TEST   | 5| 5| 5| 5| 5|                                                           |            |
                                           | 8| 8| 8| 8| 8|                                                           |            |
 _____________________________________________________________________________________________________________________|     T (*)  |
                                           | 0| 0| 0| 0| 0|                                                           |     O      |
   B6C3F1 MICE MALE                        | 0| 0| 0| 0| 0|                                                           |     T      |
                               ANIMAL ID   | 4| 4| 5| 5| 5|                                                           |     A      |
    5.0MG/M3                               | 9| 9| 0| 1| 5|                                                           |     L      |
      LUNGTX                               | 2| 3| 4| 8| 1|                                                           |            |
 __________________________________________________________________________________________________________________________________ 
 HEMATOPOIETIC SYSTEM - cont               |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mandibular                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mesenteric                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Lymph Node, Mediastinal                 | +  M  +  +  M                                                            |   3        |
                                            __________________________________________________________________________|____________|
   Spleen                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Thymus                                  | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 INTEGUMENTARY SYSTEM                      |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Mammary Gland                           | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 MUSCULOSKELETAL SYSTEM                    |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Bone                                    | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 NERVOUS SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Brain                                   | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 RESPIRATORY SYSTEM                        |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Larynx                                  | +  +  +     +                                                            |   4        |
                                            __________________________________________________________________________|____________|
   Lung                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Nose                                    | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Trachea                                 | +  +  +  +  +                                                            |   5        |
 _____________________________________________________________________________________________________________________|            |
 SPECIAL SENSES SYSTEM                     |                                                                          |            |
                                           |                                                                          |            |
    None                                   |                                                                          |            |
 _____________________________________________________________________________________________________________________|            |
 URINARY SYSTEM                            |                                                                          |            |
                                           |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Kidney                                  | +  +  +  +  +                                                            |   5        |
                                            __________________________________________________________________________|____________|
   Urinary Bladder                         | +  +  +  +  +                                                            |   5        |
 __________________________________________________________________________________________________________________________________ 
 SYSTEMIC LESIONS                          |                                                                          |            |
                                            __________________________________________________________________________|____________|
   Multiple Organs                         | +  +  +  +  +                                                            |   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  17                                                               
                                  ------------------------------------------------------------                                      
                                  ----------              END OF REPORT             ----------                                      
                                  ------------------------------------------------------------