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TDMS Study 05031-01 Pathology Tables

NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08     
LAB: IRDC                                                   MERCURIC CHLORIDE                                  DATE: 09/04/94       
EXPERIMENT: 05031 TEST: 01                                                                                     TIME: 16:34:30       
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                   PAGE:       1        
CONT:                       ROUTE: GAVAGE                                                                      NTP C#: 60173        
PATHOLOGIST: D. GOODMAN                      S. EUSTIS                                                         CAS: 7487-94-7       
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
               REASONS FOR REMOVAL:    ALL                                                                                          
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
               REMOVAL DATE RANGE:     ALL                                                                                          
                                                                                                                                    
               TREATMENT GROUPS:       INCLUDE ALL                                                                                  
NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08    
LAB: IRDC                                                   MERCURIC CHLORIDE                                  DATE: 09/04/94      
EXPERIMENT: 05031 TEST: 01                                                                                     TIME: 16:34:30      
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                                       
CONT:                       ROUTE: GAVAGE                                                                      NTP C#: 60173       
PATHOLOGIST: D. GOODMAN                      S. EUSTIS                                                         CAS: 7487-94-7      
 
 
 
 
 
                                                    MICE(B6C3F1)
                                              ----------------------------
             FOR ALL DOSES THE TUMOR RATES IN THE FOLLOWING TISSUES/ORGANS ARE BASED ON NUMBER OF TISSUES EXAMINED.
             IN OTHER TISSUES/ORGANS, RATES ARE BASED ON NUMBER OF ANIMALS NECROPSIED.
 
 
                                                    ----------------
 
                                                    Adrenal Gland
                                                    Bone Marrow
                                                    Brain
                                                    Epididymis
                                                    Gallbladder
                                                    Heart
                                                    Islets, Pancreatic
                                                    Kidney
                                                    Larynx
                                                    Liver
                                                    Lung
                                                    Nose
                                                    Ovary
                                                    Pancreas
                                                    Parathyroid Gland
                                                    Pituitary Gland
                                                    Preputial Gland
                                                    Prostate
                                                    Salivary Glands
                                                    Spleen
                                                    Testes
                                                    Thymus
                                                    Thyroid Gland
                                                    Urinary Bladder
NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08     
LAB: IRDC                                                   MERCURIC CHLORIDE                                  DATE: 09/04/94       
EXPERIMENT: 05031 TEST: 01                                                                                     TIME: 16:34:30       
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                                        
CONT:                       ROUTE: GAVAGE                                                                      NTP C#: 60173        
PATHOLOGIST: D. GOODMAN                      S. EUSTIS                                                         CAS: 7487-94-7       
 
 
 
 
 
                                     SUMMARY OF STATISTICALLY SIGNIFICANT (P<=.05) RESULTS
                                       IN THE ANALYSIS OF THE STUDY OF MERCURIC CHLORIDE
 
              ====================================================================================================
 
                                                           MALE MICE
                                                          -------------
                                 ORGAN                               MORPHOLOGY
                                -------                             ------------
 
                             Kidney: Renal Tubule          Carcinoma or Adenoma
                             All Organs                    Malignant Lymphoma And Histiocytic Sarcoma
                                                           Malignant Lymphoma: Histiocytic, Lymphocytic, Mixed,
                                                            NOS, or Undifferentiated Cell Type
                                                           Malignant Tumors
                                                           Malignant and Benign Tumors
 
              ====================================================================================================
 
                                                           FEMALE MICE
                                                          -------------
                                 ORGAN                               MORPHOLOGY
                                -------                             ------------
 
                             All Organs                    Malignant and Benign Tumors
 
              ====================================================================================================
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   1
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     2/50 (4%)       0/50 (0%)       1/49 (2%)      |     0/49 (0%)       0/49 (0%)       1/50 (2%)      |
|ADJUSTED (b)           |      5.6%            0.0%            3.2%          |      0.0%            0.0%            3.2%          |
|TERMINAL (d)           |     2/36 (6%)       0/36 (0%)       1/31 (3%)      |     0/41 (0%)       0/34 (0%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         ---             729 (T)       |      ---             ---             729 (T)       |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.399N        P=0.238N        P=0.552N       |     P=0.234           (e)           P=0.444        |
|INCIDENTAL TUMOR       |     P=0.399N        P=0.238N        P=0.552N       |     P=0.234           (e)           P=0.444        |
|LOGISTIC REGRESSION    |     P=0.399N        P=0.238N        P=0.552N       |     P=0.234           (e)           P=0.444        |
|COCHRAN-ARMITAGE       |     P=0.366N                                       |     P=0.273                                        |
|FISHER EXACT           |                     P=0.247N        P=0.508N       |                       (e)           P=0.505        |
|=================================================================================================================================|
|                                                                                                                                 |
|Harderian Gland                                                                                                                  |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     1/50 (2%)       3/50 (6%)       1/50 (2%)      |     0/50 (0%)       1/50 (2%)       0/50 (0%)      |
|ADJUSTED (b)           |      2.8%            7.9%            3.2%          |      0.0%            2.9%            0.0%          |
|TERMINAL (d)           |     1/36 (3%)       2/36 (6%)       1/31 (3%)      |     0/41 (0%)       1/35 (3%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         509             729 (T)       |      ---             729 (T)         ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.564         P=0.307         P=0.728        |     P=0.691         P=0.468           (e)          |
|INCIDENTAL TUMOR       |     P=0.582N        P=0.366         P=0.728        |     P=0.691         P=0.468           (e)          |
|LOGISTIC REGRESSION    |     P=0.592         P=0.304         P=0.728        |     P=0.691         P=0.468           (e)          |
|COCHRAN-ARMITAGE       |     P=0.610                                        |     P=0.731                                        |
|FISHER EXACT           |                     P=0.309         P=0.753N       |                     P=0.500           (e)          |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   2
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Harderian Gland                                                                                                                  |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     1/50 (2%)       3/50 (6%)       1/50 (2%)      |     0/50 (0%)       1/50 (2%)       1/50 (2%)      |
|ADJUSTED (b)           |      2.8%            7.9%            3.2%          |      0.0%            2.9%            3.2%          |
|TERMINAL (d)           |     1/36 (3%)       2/36 (6%)       1/31 (3%)      |     0/41 (0%)       1/35 (3%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         509             729 (T)       |      ---             729 (T)         729 (T)       |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.564         P=0.307         P=0.728        |     P=0.275         P=0.468         P=0.444        |
|INCIDENTAL TUMOR       |     P=0.582N        P=0.366         P=0.728        |     P=0.275         P=0.468         P=0.444        |
|LOGISTIC REGRESSION    |     P=0.592         P=0.304         P=0.728        |     P=0.275         P=0.468         P=0.444        |
|COCHRAN-ARMITAGE       |     P=0.610                                        |     P=0.331                                        |
|FISHER EXACT           |                     P=0.309         P=0.753N       |                     P=0.500         P=0.500        |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Renal Tubule                                                                                                             |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       0/50 (0%)       2/49 (4%)      |     0/49 (0%)       0/50 (0%)       0/50 (0%)      |
|ADJUSTED (b)           |      0.0%            0.0%            6.0%          |      0.0%            0.0%            0.0%          |
|TERMINAL (d)           |     0/36 (0%)       0/36 (0%)       1/31 (3%)      |     0/40 (0%)       0/35 (0%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      ---             ---             642           |      ---             ---             ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.083           (e)           P=0.212        |       (e)             (e)             (e)          |
|INCIDENTAL TUMOR       |     P=0.145           (e)           P=0.295        |       (e)             (e)             (e)          |
|LOGISTIC REGRESSION    |     P=0.089           (e)           P=0.224        |       (e)             (e)             (e)          |
|COCHRAN-ARMITAGE       |     P=0.093                                        |       (e)                                          |
|FISHER EXACT           |                       (e)           P=0.242        |                       (e)             (e)          |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   3
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Renal Tubule                                                                                                             |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       0/50 (0%)       3/49 (6%)      |     0/49 (0%)       0/50 (0%)       0/50 (0%)      |
|ADJUSTED (b)           |      0.0%            0.0%            9.1%          |      0.0%            0.0%            0.0%          |
|TERMINAL (d)           |     0/36 (0%)       0/36 (0%)       2/31 (6%)      |     0/40 (0%)       0/35 (0%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      ---             ---             642           |      ---             ---             ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.029 *         (e)           P=0.100        |       (e)             (e)             (e)          |
|INCIDENTAL TUMOR       |     P=0.054           (e)           P=0.141        |       (e)             (e)             (e)          |
|LOGISTIC REGRESSION    |     P=0.032 *         (e)           P=0.107        |       (e)             (e)             (e)          |
|COCHRAN-ARMITAGE       |     P=0.036 *                                      |       (e)                                          |
|FISHER EXACT           |                       (e)           P=0.117        |                       (e)             (e)          |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hepatocellular Adenoma                                                                                                      |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     2/50 (4%)       1/50 (2%)       1/50 (2%)      |     1/50 (2%)       0/50 (0%)       2/50 (4%)      |
|ADJUSTED (b)           |      5.6%            2.8%            3.2%          |      2.4%            0.0%            5.8%          |
|TERMINAL (d)           |     2/36 (6%)       1/36 (3%)       1/31 (3%)      |     1/41 (2%)       0/35 (0%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         729 (T)         729 (T)       |      729 (T)         ---             656           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.424N        P=0.500N        P=0.552N       |     P=0.298         P=0.532N        P=0.416        |
|INCIDENTAL TUMOR       |     P=0.424N        P=0.500N        P=0.552N       |     P=0.358         P=0.532N        P=0.513        |
|LOGISTIC REGRESSION    |     P=0.424N        P=0.500N        P=0.552N       |     P=0.335         P=0.532N        P=0.465        |
|COCHRAN-ARMITAGE       |     P=0.378N                                       |     P=0.360                                        |
|FISHER EXACT           |                     P=0.500N        P=0.500N       |                     P=0.500N        P=0.500        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   4
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hepatocellular Carcinoma                                                                                                    |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     5/50 (10%)      3/50 (6%)       6/50 (12%)     |     2/50 (4%)       1/50 (2%)       0/50 (0%)      |
|ADJUSTED (b)           |     13.5%            8.3%           19.4%          |      4.9%            2.9%            0.0%          |
|TERMINAL (d)           |     4/36 (11%)      3/36 (8%)       6/31 (19%)     |     2/41 (5%)       1/35 (3%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      699             729 (T)         729 (T)       |      729 (T)         729 (T)         ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.339         P=0.360N        P=0.396        |     P=0.192N        P=0.555N        P=0.302N       |
|INCIDENTAL TUMOR       |     P=0.346         P=0.357N        P=0.405        |     P=0.192N        P=0.555N        P=0.302N       |
|LOGISTIC REGRESSION    |     P=0.351         P=0.364N        P=0.409        |     P=0.192N        P=0.555N        P=0.302N       |
|COCHRAN-ARMITAGE       |     P=0.432                                        |     P=0.142N                                       |
|FISHER EXACT           |                     P=0.357N        P=0.500        |                     P=0.500N        P=0.247N       |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hepatocellular Carcinoma or Hepatocellular Adenoma                                                                          |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     7/50 (14%)      4/50 (8%)       6/50 (12%)     |     3/50 (6%)       1/50 (2%)       2/50 (4%)      |
|ADJUSTED (b)           |     18.9%           11.1%           19.4%          |      7.3%            2.9%            5.8%          |
|TERMINAL (d)           |     6/36 (17%)      4/36 (11%)      6/31 (19%)     |     3/41 (7%)       1/35 (3%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      699             729 (T)         729 (T)       |      729 (T)         729 (T)         656           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.542N        P=0.264N        P=0.615N       |     P=0.505N        P=0.363N        P=0.615N       |
|INCIDENTAL TUMOR       |     P=0.536N        P=0.261N        P=0.607N       |     P=0.454N        P=0.363N        P=0.541N       |
|LOGISTIC REGRESSION    |     P=0.528N        P=0.268N        P=0.601N       |     P=0.462N        P=0.363N        P=0.569N       |
|COCHRAN-ARMITAGE       |     P=0.437N                                       |     P=0.399N                                       |
|FISHER EXACT           |                     P=0.262N        P=0.500N       |                     P=0.309N        P=0.500N       |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   5
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hepatocellular Carcinoma, Hepatocellular Adenoma, or Hepatoblastoma                                                         |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     7/50 (14%)      4/50 (8%)       6/50 (12%)     |     3/50 (6%)       1/50 (2%)       2/50 (4%)      |
|ADJUSTED (b)           |     18.9%           11.1%           19.4%          |      7.3%            2.9%            5.8%          |
|TERMINAL (d)           |     6/36 (17%)      4/36 (11%)      6/31 (19%)     |     3/41 (7%)       1/35 (3%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      699             729 (T)         729 (T)       |      729 (T)         729 (T)         656           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.542N        P=0.264N        P=0.615N       |     P=0.505N        P=0.363N        P=0.615N       |
|INCIDENTAL TUMOR       |     P=0.536N        P=0.261N        P=0.607N       |     P=0.454N        P=0.363N        P=0.541N       |
|LOGISTIC REGRESSION    |     P=0.528N        P=0.268N        P=0.601N       |     P=0.462N        P=0.363N        P=0.569N       |
|COCHRAN-ARMITAGE       |     P=0.437N                                       |     P=0.399N                                       |
|FISHER EXACT           |                     P=0.262N        P=0.500N       |                     P=0.309N        P=0.500N       |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Adenoma                                                                                                |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     6/50 (12%)      8/50 (16%)      4/50 (8%)      |     2/50 (4%)       5/50 (10%)      3/50 (6%)      |
|ADJUSTED (b)           |     16.7%           22.2%           12.9%          |      4.9%           12.4%            9.7%          |
|TERMINAL (d)           |     6/36 (17%)      8/36 (22%)      4/31 (13%)     |     2/41 (5%)       2/35 (6%)       3/31 (10%)     |
|FIRST INCIDENCE (DAYS) |      729 (T)         729 (T)         729 (T)       |      729 (T)         673             729 (T)       |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.420N        P=0.384         P=0.466N       |     P=0.284         P=0.179         P=0.373        |
|INCIDENTAL TUMOR       |     P=0.420N        P=0.384         P=0.466N       |     P=0.405         P=0.317         P=0.373        |
|LOGISTIC REGRESSION    |     P=0.420N        P=0.384         P=0.466N       |     P=0.342         P=0.209         P=0.373        |
|COCHRAN-ARMITAGE       |     P=0.322N                                       |     P=0.421                                        |
|FISHER EXACT           |                     P=0.387         P=0.370N       |                     P=0.218         P=0.500        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   6
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Carcinoma                                                                                              |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     4/50 (8%)       0/50 (0%)       2/50 (4%)      |     1/50 (2%)       3/50 (6%)       2/50 (4%)      |
|ADJUSTED (b)           |     11.1%            0.0%            6.5%          |      2.4%            7.6%            5.0%          |
|TERMINAL (d)           |     4/36 (11%)      0/36 (0%)       2/31 (6%)      |     1/41 (2%)       2/35 (6%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         ---             729 (T)       |      729 (T)         400             573           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.265N        P=0.063N        P=0.407N       |     P=0.326         P=0.266         P=0.435        |
|INCIDENTAL TUMOR       |     P=0.265N        P=0.063N        P=0.407N       |     P=0.468         P=0.321         P=0.579        |
|LOGISTIC REGRESSION    |     P=0.265N        P=0.063N        P=0.407N       |     P=0.453         P=0.328         P=0.531        |
|COCHRAN-ARMITAGE       |     P=0.222N                                       |     P=0.399                                        |
|FISHER EXACT           |                     P=0.059N        P=0.339N       |                     P=0.309         P=0.500        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Carcinoma or Alveolar/Bronchiolar Adenoma                                                              |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |    10/50 (20%)      8/50 (16%)      6/50 (12%)     |     3/50 (6%)       8/50 (16%)      5/50 (10%)     |
|ADJUSTED (b)           |     27.8%           22.2%           19.4%          |      7.3%           19.4%           14.2%          |
|TERMINAL (d)           |    10/36 (28%)      8/36 (22%)      6/31 (19%)     |     3/41 (7%)       4/35 (11%)      3/31 (10%)     |
|FIRST INCIDENCE (DAYS) |      729 (T)         729 (T)         729 (T)       |      729 (T)         400             573           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.251N        P=0.393N        P=0.303N       |     P=0.185         P=0.075         P=0.235        |
|INCIDENTAL TUMOR       |     P=0.251N        P=0.393N        P=0.303N       |     P=0.341         P=0.159         P=0.308        |
|LOGISTIC REGRESSION    |     P=0.251N        P=0.393N        P=0.303N       |     P=0.304         P=0.104         P=0.310        |
|COCHRAN-ARMITAGE       |     P=0.170N                                       |     P=0.314                                        |
|FISHER EXACT           |                     P=0.398N        P=0.207N       |                     P=0.100         P=0.357        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   7
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary                                                                                                                            |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |                                                    |     4/49 (8%)       1/49 (2%)       1/50 (2%)      |
|ADJUSTED (b)           |                                                    |      9.8%            2.9%            2.9%          |
|TERMINAL (d)           |                                                    |     4/41 (10%)      1/34 (3%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |                                                    |      729 (T)         729 (T)         670           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |                                                    |     P=0.161N        P=0.239N        P=0.272N       |
|INCIDENTAL TUMOR       |                                                    |     P=0.126N        P=0.239N        P=0.205N       |
|LOGISTIC REGRESSION    |                                                    |     P=0.131N        P=0.239N        P=0.225N       |
|COCHRAN-ARMITAGE       |                                                    |     P=0.098N                                       |
|FISHER EXACT           |                                                    |                     P=0.181N        P=0.175N       |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis or Unspecified Site                                                                               |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     1/48 (2%)       0/47 (0%)       0/47 (0%)      |     2/49 (4%)       4/47 (9%)       2/45 (4%)      |
|ADJUSTED (b)           |      2.9%            0.0%            0.0%          |      4.9%           11.8%            5.8%          |
|TERMINAL (d)           |     1/34 (3%)       0/34 (0%)       0/29 (0%)      |     2/41 (5%)       4/34 (12%)      1/28 (4%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         ---             ---           |      729 (T)         729 (T)         492           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.289N        P=0.500N        P=0.532N       |     P=0.425         P=0.254         P=0.577        |
|INCIDENTAL TUMOR       |     P=0.289N        P=0.500N        P=0.532N       |     P=0.491         P=0.254         P=0.690        |
|LOGISTIC REGRESSION    |     P=0.289N        P=0.500N        P=0.532N       |     P=0.518         P=0.254         P=0.679        |
|COCHRAN-ARMITAGE       |     P=0.273N                                       |     P=0.548                                        |
|FISHER EXACT           |                     P=0.505N        P=0.505N       |                     P=0.319         P=0.659        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   8
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Intermedia                                                                                                 |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     2/48 (4%)       0/47 (0%)       1/47 (2%)      |     1/49 (2%)       0/47 (0%)       0/45 (0%)      |
|ADJUSTED (b)           |      5.9%            0.0%            3.4%          |      2.4%            0.0%            0.0%          |
|TERMINAL (d)           |     2/34 (6%)       0/34 (0%)       1/29 (3%)      |     1/41 (2%)       0/34 (0%)       0/28 (0%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         ---             729 (T)       |      729 (T)         ---             ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.401N        P=0.238N        P=0.556N       |     P=0.322N        P=0.537N        P=0.576N       |
|INCIDENTAL TUMOR       |     P=0.401N        P=0.238N        P=0.556N       |     P=0.322N        P=0.537N        P=0.576N       |
|LOGISTIC REGRESSION    |     P=0.401N        P=0.238N        P=0.556N       |     P=0.322N        P=0.537N        P=0.576N       |
|COCHRAN-ARMITAGE       |     P=0.366N                                       |     P=0.281N                                       |
|FISHER EXACT           |                     P=0.253N        P=0.508N       |                     P=0.510N        P=0.521N       |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Fibrosarcoma                                                                                                                |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     2/50 (4%)       3/50 (6%)       0/50 (0%)      |     0/50 (0%)       4/50 (8%)       0/50 (0%)      |
|ADJUSTED (b)           |      5.6%            8.3%            0.0%          |      0.0%           10.3%            0.0%          |
|TERMINAL (d)           |     2/36 (6%)       3/36 (8%)       0/31 (0%)      |     0/41 (0%)       2/35 (6%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      729 (T)         729 (T)         ---           |      ---             673             ---           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.238N        P=0.500         P=0.272N       |     P=0.531         P=0.053           (e)          |
|INCIDENTAL TUMOR       |     P=0.238N        P=0.500         P=0.272N       |     P=0.579N        P=0.102           (e)          |
|LOGISTIC REGRESSION    |     P=0.238N        P=0.500         P=0.272N       |     P=0.589         P=0.061           (e)          |
|COCHRAN-ARMITAGE       |     P=0.202N                                       |     P=0.622                                        |
|FISHER EXACT           |                     P=0.500         P=0.247N       |                     P=0.059           (e)          |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE   9
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Spleen                                                                                                                           |
|     Hemangiosarcoma                                                                                                             |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |                                                    |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       0/49 (0%)       0/49 (0%)      |     1/49 (2%)       2/50 (4%)       1/48 (2%)      |
|ADJUSTED (b)           |      0.0%            0.0%            0.0%          |      2.4%            5.0%            2.6%          |
|TERMINAL (d)           |     0/36 (0%)       0/35 (0%)       0/31 (0%)      |     1/41 (2%)       0/35 (0%)       0/31 (0%)      |
|FIRST INCIDENCE (DAYS) |      ---             ---             ---           |      729 (T)         678             651           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |       (e)             (e)             (e)          |     P=0.544         P=0.462         P=0.713        |
|INCIDENTAL TUMOR       |       (e)             (e)             (e)          |     P=0.456N        P=0.726         P=0.696N       |
|LOGISTIC REGRESSION    |       (e)             (e)             (e)          |     P=0.613         P=0.502         P=0.759        |
|COCHRAN-ARMITAGE       |       (e)                                          |     P=0.616                                        |
|FISHER EXACT           |                       (e)             (e)          |                     P=0.508         P=0.747        |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach                                                                                                             |
|     Squamous Cell Carcinoma or Papilloma Squamous                                                                               |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       1/50 (2%)       1/50 (2%)      |     1/50 (2%)       0/50 (0%)       3/50 (6%)      |
|ADJUSTED (b)           |      0.0%            2.8%            3.2%          |      2.4%            0.0%            8.6%          |
|TERMINAL (d)           |     0/36 (0%)       1/36 (3%)       1/31 (3%)      |     1/41 (2%)       0/35 (0%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      ---             729 (T)         729 (T)       |      729 (T)         ---             651           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.299         P=0.500         P=0.470        |     P=0.129         P=0.532N        P=0.225        |
|INCIDENTAL TUMOR       |     P=0.299         P=0.500         P=0.470        |     P=0.196         P=0.532N        P=0.373        |
|LOGISTIC REGRESSION    |     P=0.299         P=0.500         P=0.470        |     P=0.159         P=0.532N        P=0.275        |
|COCHRAN-ARMITAGE       |     P=0.331                                        |     P=0.176                                        |
|FISHER EXACT           |                     P=0.500         P=0.500        |                     P=0.500N        P=0.309        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE  10
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach                                                                                                             |
|     Squamous Cell Papilloma                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       0/50 (0%)       1/50 (2%)      |     0/50 (0%)       0/50 (0%)       2/50 (4%)      |
|ADJUSTED (b)           |      0.0%            0.0%            3.2%          |      0.0%            0.0%            5.7%          |
|TERMINAL (d)           |     0/36 (0%)       0/36 (0%)       1/31 (3%)      |     0/41 (0%)       0/35 (0%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      ---             ---             729 (T)       |      ---             ---             651           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.248           (e)           P=0.470        |     P=0.077           (e)           P=0.195        |
|INCIDENTAL TUMOR       |     P=0.248           (e)           P=0.470        |     P=0.100           (e)           P=0.278        |
|LOGISTIC REGRESSION    |     P=0.248           (e)           P=0.470        |     P=0.090           (e)           P=0.225        |
|COCHRAN-ARMITAGE       |     P=0.269                                        |     P=0.095                                        |
|FISHER EXACT           |                       (e)           P=0.500        |                       (e)           P=0.247        |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus                                                                                                                           |
|     Polyp Stromal                                                                                                               |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |                                                    |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |                                                    |     2/50 (4%)       0/50 (0%)       1/50 (2%)      |
|ADJUSTED (b)           |                                                    |      4.9%            0.0%            3.2%          |
|TERMINAL (d)           |                                                    |     2/41 (5%)       0/35 (0%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |                                                    |      729 (T)         ---             729 (T)       |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |                                                    |     P=0.438N        P=0.274N        P=0.597N       |
|INCIDENTAL TUMOR       |                                                    |     P=0.438N        P=0.274N        P=0.597N       |
|LOGISTIC REGRESSION    |                                                    |     P=0.438N        P=0.274N        P=0.597N       |
|COCHRAN-ARMITAGE       |                                                    |     P=0.360N                                       |
|FISHER EXACT           |                                                    |                     P=0.247N        P=0.500N       |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE  11
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Hemangiosarcoma                                                                                                             |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     0/50 (0%)       0/50 (0%)       0/50 (0%)      |     1/50 (2%)       3/50 (6%)       2/50 (4%)      |
|ADJUSTED (b)           |      0.0%            0.0%            0.0%          |      2.4%            7.7%            5.7%          |
|TERMINAL (d)           |     0/36 (0%)       0/36 (0%)       0/31 (0%)      |     1/41 (2%)       1/35 (3%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      ---             ---             ---           |      729 (T)         678             651           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |       (e)             (e)             (e)          |     P=0.305         P=0.266         P=0.419        |
|INCIDENTAL TUMOR       |       (e)             (e)             (e)          |     P=0.455         P=0.418         P=0.513        |
|LOGISTIC REGRESSION    |       (e)             (e)             (e)          |     P=0.362         P=0.296         P=0.467        |
|COCHRAN-ARMITAGE       |       (e)                                          |     P=0.399                                        |
|FISHER EXACT           |                       (e)             (e)          |                     P=0.309         P=0.500        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Hemangiosarcoma or Hemangioma                                                                                               |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     1/50 (2%)       1/50 (2%)       1/50 (2%)      |     1/50 (2%)       4/50 (8%)       3/50 (6%)      |
|ADJUSTED (b)           |      2.6%            2.4%            3.2%          |      2.4%           10.4%            8.3%          |
|TERMINAL (d)           |     0/36 (0%)       0/36 (0%)       1/31 (3%)      |     1/41 (2%)       2/35 (6%)       1/31 (3%)      |
|FIRST INCIDENCE (DAYS) |      695             509             729 (T)       |      729 (T)         678             651           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.606         P=0.751         P=0.725        |     P=0.169         P=0.147         P=0.230        |
|INCIDENTAL TUMOR       |     P=0.563N        P=0.686N        P=0.744        |     P=0.298         P=0.244         P=0.373        |
|LOGISTIC REGRESSION    |     P=0.634         P=0.763         P=0.744        |     P=0.218         P=0.170         P=0.282        |
|COCHRAN-ARMITAGE       |     P=0.640                                        |     P=0.252                                        |
|FISHER EXACT           |                     P=0.753N        P=0.753N       |                     P=0.181         P=0.309        |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE  12
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant Lymphoma And Histiocytic Sarcoma                                                                                  |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     8/50 (16%)      2/50 (4%)       3/50 (6%)      |     9/50 (18%)      9/50 (18%)      5/50 (10%)     |
|ADJUSTED (b)           |     21.0%            4.9%            9.7%          |     19.8%           21.9%           13.8%          |
|TERMINAL (d)           |     6/36 (17%)      0/36 (0%)       3/31 (10%)     |     5/41 (12%)      4/35 (11%)      2/31 (6%)      |
|FIRST INCIDENCE (DAYS) |      695             456             729 (T)       |      560             558             364           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.083N        P=0.055N        P=0.155N       |     P=0.340N        P=0.491         P=0.363N       |
|INCIDENTAL TUMOR       |     P=0.053N        P=0.032N*       P=0.140N       |     P=0.073N        P=0.391N        P=0.088N       |
|LOGISTIC REGRESSION    |     P=0.065N        P=0.048N*       P=0.136N       |     P=0.170N        P=0.600         P=0.188N       |
|COCHRAN-ARMITAGE       |     P=0.055N                                       |     P=0.166N                                       |
|FISHER EXACT           |                     P=0.046N*       P=0.100N       |                     P=0.602N        P=0.194N       |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant Lymphoma: Histiocytic, Lymphocytic, Mixed,                                                                        |
|     NOS, or Undifferentiated Cell Type                                                                                          |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |     8/50 (16%)      2/50 (4%)       3/50 (6%)      |     9/50 (18%)      9/50 (18%)      5/50 (10%)     |
|ADJUSTED (b)           |     21.0%            4.9%            9.7%          |     19.8%           21.9%           13.8%          |
|TERMINAL (d)           |     6/36 (17%)      0/36 (0%)       3/31 (10%)     |     5/41 (12%)      4/35 (11%)      2/31 (6%)      |
|FIRST INCIDENCE (DAYS) |      695             456             729 (T)       |      560             558             364           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.083N        P=0.055N        P=0.155N       |     P=0.340N        P=0.491         P=0.363N       |
|INCIDENTAL TUMOR       |     P=0.053N        P=0.032N*       P=0.140N       |     P=0.073N        P=0.391N        P=0.088N       |
|LOGISTIC REGRESSION    |     P=0.065N        P=0.048N*       P=0.136N       |     P=0.170N        P=0.600         P=0.188N       |
|COCHRAN-ARMITAGE       |     P=0.055N                                       |     P=0.166N                                       |
|FISHER EXACT           |                     P=0.046N*       P=0.100N       |                     P=0.602N        P=0.194N       |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE  13
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Benign Tumors                                                                                                               |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |    13/50 (26%)     15/50 (30%)     10/50 (20%)     |    13/50 (26%)     14/50 (28%)     12/50 (24%)     |
|ADJUSTED (b)           |     33.9%           40.4%           31.1%          |     31.7%           35.1%           32.2%          |
|TERMINAL (d)           |    11/36 (31%)     14/36 (39%)      9/31 (29%)     |    13/41 (32%)     10/35 (29%)      7/31 (23%)     |
|FIRST INCIDENCE (DAYS) |      457             509             642           |      729 (T)         632             492           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.430N        P=0.406         P=0.466N       |     P=0.336         P=0.337         P=0.390        |
|INCIDENTAL TUMOR       |     P=0.332N        P=0.469         P=0.372N       |     P=0.543         P=0.440         P=0.589N       |
|LOGISTIC REGRESSION    |     P=0.364N        P=0.398         P=0.399N       |     P=0.502         P=0.453         P=0.551        |
|COCHRAN-ARMITAGE       |     P=0.283N                                       |     P=0.455N                                       |
|FISHER EXACT           |                     P=0.412         P=0.318N       |                     P=0.500         P=0.500N       |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant Tumors                                                                                                            |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |    20/50 (40%)     11/50 (22%)     12/50 (24%)     |    14/50 (28%)     21/50 (42%)     12/50 (24%)     |
|ADJUSTED (b)           |     51.3%           28.1%           37.5%          |     31.0%           46.5%           30.7%          |
|TERMINAL (d)           |    17/36 (47%)      8/36 (22%)     11/31 (35%)     |    10/41 (24%)     11/35 (31%)      5/31 (16%)     |
|FIRST INCIDENCE (DAYS) |      695             456             728           |      560             400             364           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.110N        P=0.049N*       P=0.152N       |     P=0.389         P=0.065         P=0.484        |
|INCIDENTAL TUMOR       |     P=0.072N        P=0.026N*       P=0.124N       |     P=0.222N        P=0.241         P=0.273N       |
|LOGISTIC REGRESSION    |     P=0.075N        P=0.038N*       P=0.122N       |     P=0.409N        P=0.100         P=0.448N       |
|COCHRAN-ARMITAGE       |     P=0.049N*                                      |     P=0.373N                                       |
|FISHER EXACT           |                     P=0.041N*       P=0.066N       |                     P=0.104         P=0.410N       |
|=================================================================================================================================|
 
         DATE: 09/04/94                     EXPERIMENT: 05031 TEST: 01                                                 PAGE  14
                              STATISTICAL ANALYSIS OF PRIMARY TUMORS IN MICE(B6C3F1) -- MERCURIC CHLORIDE
 
                                                 TERMINAL SACRIFICE AT 105 WEEKS
 
|=================================================================================================================================|
|                       |                                                    |                                                    |
|                       |                       MALES                        |                      FEMALES                       |
|                       |                                                    |                                                    |
|DOSE                   |      CONTROL         5MG/KG          10MG/KG       |      CONTROL         5MG/KG          10MG/KG       |
|                       |      MALE            MALE            MALE          |      FEMALE          FEMALE          FEMALE        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant and Benign Tumors                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES            |       #               #               #            |       #               #               #            |
|-----------            |                                                    |                                                    |
|OVERALL (a)            |    28/50 (56%)     21/50 (42%)     18/50 (36%)     |    23/50 (46%)     32/50 (64%)     19/50 (38%)     |
|ADJUSTED (b)           |     70.0%           52.4%           54.5%          |     51.0%           69.5%           46.8%          |
|TERMINAL (d)           |    24/36 (67%)     17/36 (47%)     16/31 (52%)     |    19/41 (46%)     21/35 (60%)     10/31 (32%)     |
|FIRST INCIDENCE (DAYS) |      457             456             642           |      560             400             364           |
|-----------------------|                                                    |                                                    |
|STATISTICAL TESTS (f)  |                                                    |                                                    |
|-----------------------|                                                    |                                                    |
|LIFE TABLE             |     P=0.093N        P=0.124N        P=0.114N       |     P=0.375         P=0.023 *       P=0.478        |
|INCIDENTAL TUMOR       |     P=0.036N*       P=0.054N        P=0.061N       |     P=0.224N        P=0.086         P=0.239N       |
|LOGISTIC REGRESSION    |     P=0.043N*       P=0.101N        P=0.062N       |     P=0.341N        P=0.043 *       P=0.365N       |
|COCHRAN-ARMITAGE       |     P=0.028N*                                      |     P=0.242N                                       |
|FISHER EXACT           |                     P=0.115N        P=0.035N*      |                     P=0.054         P=0.272N       |
|=================================================================================================================================|
 
 (a)  Number of tumor-bearing animals / number of animals examined at site.
 (b)  Kaplan-Meier estimated lifetime tumor incidence after adjustment for 
      intercurrent mortality.
 (d)  Observed incidence at terminal kill.
 (f)  Beneath the control incidence are the P-values associated with the trend 
      test.  Beneath the dosed group incidence are the P-values corresponding to 
      pairwise comparisons between the controls and that dosed group.  The life
      table analysis regards tumors in animals dying  prior to terminal kill as
      being (directly or indirectly) the cause of death.  The incidental tumor 
      test regards these lesions as non-fatal.  Logistic regression is an alternative
      method for analyzing the incidence of non-fatal tumors.  The Cochran-Armitage
      and Fisher's exact tests compare directly the overall incidence rates.  
      For all tests, a negative trend is indicated by "N".
 (e)  Value of Statistic cannot be computed. 
 (I)  Interim sacrifice
 (T)  Terminal sacrifice
  #   Tumor rates based on number of animals necropsied.
 
  *   To the right of any statistical result, indicates significance at (P<=0.05).
  **  To the right of any statistical result, indicates significance at (P<=0.01).