https://ntp.niehs.nih.gov/go/6168

TDMS Study 96007-05 Pathology Tables

NTP                                    STATISTICAL ANALYSIS OF NON-NEOPLASTIC LESIONS                          REPORT: PEIRPT10     
LAB: Battelle Columbus                         TOXIC EQUIVALENCY FACTOR EVALUATION(PECDF)                      DATE: 07/14/03       
EXPERIMENT: 96007 TEST: 05                                                                                     TIME: 15:05:09       
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                   PAGE:       1        
CONT: NO1-ES-75411                              ROUTE: GAVAGE                                                  NTP C#: 96007F       
PATHOLOGIST: SELLS, DONALD                                                                                     CAS: 57117-31-4      
------------------------------------------------------------------------------------------------------------------------------------
                                                         53 WEEK SSAC RATS                                                          
               REASONS FOR REMOVAL:    25017 Scheduled Sacrifice                                                                    
               REMOVAL DATE RANGE:     040600 040700                                                                                
               TREATMENT GROUPS:       INCLUDE ALL                                                                                  
NTP                                    STATISTICAL ANALYSIS OF NON-NEOPLASTIC LESIONS                          REPORT: PEIRPT10     
LAB: Battelle Columbus                         TOXIC EQUIVALENCY FACTOR EVALUATION(PECDF)                      DATE: 07/14/03       
EXPERIMENT: 96007 TEST: 05                                                                                     TIME: 15:05:09       
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                                        
CONT: NO1-ES-75411                              ROUTE: GAVAGE                                                  NTP C#: 96007F       
PATHOLOGIST: SELLS, DONALD                                                                                     CAS: 57117-31-4      
SUMMARY OF STATISTICALLY SIGNIFICANT (P<=.05) RESULTS                                                                               
IN THE ANALYSIS OF       TOXIC EQUIVALENCY FACTOR EVALUATION(                                                                       
===============================================================                                                                     
Female Rats                                                                                                                         
------------                                                                                                                        
Organ                                  Morphology                                                                                   
-----                                  ----------                                                                                   
Liver                                  Fatty Change Diffuse                                                                         
                                       Pigmentation                                                                                 
Liver: Bile Duct                       Cyst                                                                                         
Liver: Hepatocyte                      Hypertrophy                                                                                  
                                       Multinucleated                                                                               
Mammary Gland                          Hyperplasia                                                                                  
Ovary                                  Atrophy                                                                                      
                                       Cyst                                                                                         
Thyroid Gland: C-Cell                  Hyperplasia                                                                                  
Thyroid Gland: Follicular Cell         Hypertrophy                                                                                  
Uterus                                 Inflammation Chronic                                                                         
                                       Metaplasia                                                                                   
Uterus: Endometrium                    Hyperplasia Cystic                                                                           
Uterus: Epithelium                     Hyperplasia                                                                                  
===============================================================                                                                     
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 1       
Statistical Analysis of Non-neoplastic Lesions in        Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(        
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Adrenal Cortex                                                                                                                   | 
|     Hyperplasia                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        1/8 (13%)        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        1/1.34           0/0.00           0/0.00           0/0.00           0/0.00           2/2.30          | 
|POLY-3 PERCENT (g) |        74.4%            0.0%             0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        1/8 (12.5%)      0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.388          P=1.000N         P=1.000N         P=1.000N         P=1.000N         P=0.500         | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              P=0.314         | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              P=0.348         | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              P=0.304         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.384          P=1.000          P=1.000          P=1.000          P=1.000          P=0.500         | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Adrenal Cortex                                                                                                                   | 
|     Hypertrophy                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        4/8 (50%)        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         6/8 (75%)       | 
|POLY-3 RATE (b)    |        4/4.20           0/0.00           0/0.00           0/0.00           0/0.00           6/6.10          | 
|POLY-3 PERCENT (g) |        95.3%            0.0%             0.0%             0.0%             0.0%             98.4%           | 
|INT SACRIFICE 1 (c)|        4/8 (50%)        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         6/8 (75%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.233          P=1.000N         P=1.000N         P=1.000N         P=1.000N         P=0.309         | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              P=0.243         | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              P=0.255         | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              P=0.240         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.225          P=1.000          P=1.000          P=1.000          P=1.000          P=0.304         | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 2       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Adrenal Cortex                                                                                                                   | 
|     Vacuolization Cytoplasmic                                                                                                   | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.00           0/0.00           0/0.00           0/0.00           2/2.30          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.143          (e)              (e)              (e)              (e)              P=0.232         | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              P=0.069         | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              P=0.093         | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              P=0.064         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.135          (e)              (e)              (e)              (e)              P=0.233         | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Basophilic Focus                                                                                                            | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        1/8 (13%)        1/8 (13%)        0/8 (0%)         3/8 (38%)        0/8 (0%)         1/8 (13%)       | 
|POLY-3 RATE (b)    |        1/1.34           1/1.34           0/0.39           3/3.25           0/0.39           1/1.34          | 
|POLY-3 PERCENT (g) |        74.4%            74.4%            0.0%             92.4%            0.0%             74.4%           | 
|INT SACRIFICE 1 (c)|        1/8 (12.5%)      1/8 (12.5%)      0/8 (0%)         3/8 (37.5%)      0/8 (0%)         1/8 (12.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          ---              366 (I)          ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.574N         P=0.768          P=0.500N         P=0.288          P=0.500N         P=0.768         | 
|POLY 3             |        P=0.468N         P=0.548          P=0.173N         P=0.156          P=0.173N         P=0.548         | 
|POLY 1.5           |        P=0.487N         P=0.590          P=0.228N         P=0.180          P=0.228N         P=0.590         | 
|POLY 6             |        P=0.463N         P=0.536          P=0.159N         P=0.149          P=0.159N         P=0.536         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.575N         P=0.767N         P=0.500N         P=0.285          P=0.500N         P=0.767N        | 
|ORDER RESTRICTED   |        P=0.412N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 3       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Fatty Change Diffuse                                                                                                        | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         3/8 (38%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.39           0/0.39           0/0.39           0/0.39           3/3.25          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             92.4%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         3/8 (37.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.107         | 
|POLY 3             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.022 *       | 
|POLY 1.5           |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.031 *       | 
|POLY 6             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.020 *       | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.100         | 
|ORDER RESTRICTED   |        P=0.154          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Inflammation                                                                                                                | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        8/8 (100%)       8/8 (100%)       8/8 (100%)       7/8 (88%)        8/8 (100%)       8/8 (100%)      | 
|POLY-3 RATE (b)    |        8/8.00           8/8.00           8/8.00           7/7.05           8/8.00           8/8.00          | 
|POLY-3 PERCENT (g) |        100.0%           100.0%           100.0%           99.3%            100.0%           100.0%          | 
|INT SACRIFICE 1 (c)|        8/8 (100%)       8/8 (100%)       8/8 (100%)       7/8 (87.5%)      8/8 (100%)       8/8 (100%)      | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.706          (e)              (e)              P=0.500N         (e)              (e)             | 
|POLY 3             |        P=0.708          (e)              (e)              P=0.476N         (e)              (e)             | 
|POLY 1.5           |        P=0.707          (e)              (e)              P=0.480N         (e)              (e)             | 
|POLY 6             |        P=0.710          (e)              (e)              P=0.478N         (e)              (e)             | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.708          (e)              (e)              P=0.500N         (e)              (e)             | 
|ORDER RESTRICTED   |        P=0.507N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 4       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Mixed Cell Focus                                                                                                            | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        7/8 (88%)        6/8 (75%)        6/8 (75%)        8/8 (100%)       6/8 (75%)        6/8 (75%)       | 
|POLY-3 RATE (b)    |        7/7.05           6/6.10           6/6.10           8/8.00           6/6.10           6/6.10          | 
|POLY-3 PERCENT (g) |        99.3%            98.4%            98.4%            100.0%           98.4%            98.4%           | 
|INT SACRIFICE 1 (c)|        7/8 (87.5%)      6/8 (75%)        6/8 (75%)        8/8 (100%)       6/8 (75%)        6/8 (75%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.419N         P=0.500N         P=0.500N         P=0.500          P=0.500N         P=0.500N        | 
|POLY 3             |        P=0.396N         P=0.456N         P=0.456N         P=0.476          P=0.456N         P=0.456N        | 
|POLY 1.5           |        P=0.400N         P=0.464N         P=0.464N         P=0.480          P=0.464N         P=0.464N        | 
|POLY 6             |        P=0.395N         P=0.456N         P=0.456N         P=0.478          P=0.456N         P=0.456N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.418N         P=0.500N         P=0.500N         P=0.500          P=0.500N         P=0.500N        | 
|ORDER RESTRICTED   |        P=0.491N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Necrosis                                                                                                                    | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        1/8 (13%)        1/8 (13%)        2/8 (25%)        0/8 (0%)         0/8 (0%)         0/8 (0%)        | 
|POLY-3 RATE (b)    |        1/1.34           1/1.34           2/2.30           0/0.39           0/0.39           0/0.39          | 
|POLY-3 PERCENT (g) |        74.4%            74.4%            87.1%            0.0%             0.0%             0.0%            | 
|INT SACRIFICE 1 (c)|        1/8 (12.5%)      1/8 (12.5%)      2/8 (25%)        0/8 (0%)         0/8 (0%)         0/8 (0%)        | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          ---              ---              ---             | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.147N         P=0.768          P=0.500          P=0.500N         P=0.500N         P=0.500N        | 
|POLY 3             |        P=0.075N         P=0.548          P=0.314          P=0.173N         P=0.173N         P=0.173N        | 
|POLY 1.5           |        P=0.086N         P=0.590          P=0.348          P=0.228N         P=0.228N         P=0.228N        | 
|POLY 6             |        P=0.074N         P=0.536          P=0.304          P=0.159N         P=0.159N         P=0.159N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.144N         P=0.767N         P=0.500          P=0.500N         P=0.500N         P=0.500N        | 
|ORDER RESTRICTED   |        P=0.281N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 5       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver                                                                                                                            | 
|     Pigmentation                                                                                                                | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         1/8 (13%)        1/8 (13%)        6/8 (75%)        7/8 (88%)        8/8 (100%)      | 
|POLY-3 RATE (b)    |        0/0.39           1/1.34           1/1.34           6/6.10           7/7.05           8/8.00          | 
|POLY-3 PERCENT (g) |        0.0%             74.4%            74.4%            98.4%            99.3%            100.0%          | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         1/8 (12.5%)      1/8 (12.5%)      6/8 (75%)        7/8 (87.5%)      8/8 (100%)      | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P<0.001 **       P=0.500          P=0.500          P=0.006 **       P=0.002 **       P<0.001 **      | 
|POLY 3             |        P<0.001 **       P=0.173          P=0.173          P<0.001 **       P<0.001 **       P<0.001N**      | 
|POLY 1.5           |        P<0.001 **       P=0.228          P=0.228          P<0.001 **       P<0.001 **       P<0.001N**      | 
|POLY 6             |        P<0.001 **       P=0.159          P=0.159          P<0.001 **       P<0.001 **       P<0.001N**      | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P<0.001 **       P=0.500          P=0.500          P=0.003 **       P<0.001 **       P<0.001 **      | 
|ORDER RESTRICTED   |        P<0.001 **       (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver: Bile Duct                                                                                                                 | 
|     Cyst                                                                                                                        | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.39           0/0.39           0/0.39           0/0.39           2/2.30          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.010 *        (e)              (e)              (e)              (e)              P=0.232         | 
|POLY 3             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.069         | 
|POLY 1.5           |        P=0.002 **       (e)              (e)              (e)              (e)              P=0.093         | 
|POLY 6             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.064         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.010 *        (e)              (e)              (e)              (e)              P=0.233         | 
|ORDER RESTRICTED   |        P=0.220          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 6       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver: Hepatocyte                                                                                                                | 
|     Hypertrophy                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        1/8 (13%)        3/8 (38%)        3/8 (38%)        3/8 (38%)        5/8 (63%)        7/8 (88%)       | 
|POLY-3 RATE (b)    |        1/1.34           3/3.25           3/3.25           3/3.25           5/5.15           7/7.05          | 
|POLY-3 PERCENT (g) |        74.4%            92.4%            92.4%            92.4%            97.1%            99.3%           | 
|INT SACRIFICE 1 (c)|        1/8 (12.5%)      3/8 (37.5%)      3/8 (37.5%)      3/8 (37.5%)      5/8 (62.5%)      7/8 (87.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.002 **       P=0.288          P=0.288          P=0.288          P=0.067          P=0.008 **      | 
|POLY 3             |        P<0.001 **       P=0.156          P=0.156          P=0.156          P=0.016 *        P<0.001 **      | 
|POLY 1.5           |        P<0.001 **       P=0.180          P=0.180          P=0.180          P=0.021 *        P<0.001 **      | 
|POLY 6             |        P<0.001 **       P=0.149          P=0.149          P=0.149          P=0.015 *        P<0.001 **      | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.002 **       P=0.285          P=0.285          P=0.285          P=0.059          P=0.005 **      | 
|ORDER RESTRICTED   |        P=0.010 *        (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Liver: Hepatocyte                                                                                                                | 
|     Multinucleated                                                                                                              | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         1/8 (13%)        2/8 (25%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.39           0/0.39           0/0.39           1/1.34           2/2.30          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             74.4%            87.1%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/8 (0%)         0/8 (0%)         0/8 (0%)         1/8 (12.5%)      2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.015 *        (e)              (e)              (e)              P=0.500          P=0.232         | 
|POLY 3             |        P=0.004 **       (e)              (e)              (e)              P=0.173          P=0.069         | 
|POLY 1.5           |        P=0.006 **       (e)              (e)              (e)              P=0.228          P=0.093         | 
|POLY 6             |        P=0.004 **       (e)              (e)              (e)              P=0.159          P=0.064         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.014 *        (e)              (e)              (e)              P=0.500          P=0.233         | 
|ORDER RESTRICTED   |        P=0.234          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 7       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Lung                                                                                                                             | 
|     Infiltration Cellular Histiocyte                                                                                            | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        4/8 (50%)        1/1 (100%)       0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        4/4.20           1/1.00           0/0.00           0/0.00           0/0.00           2/2.30          | 
|POLY-3 PERCENT (g) |        95.3%            100.0%           0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        4/8 (50%)        1/1 (100%)       0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.167N         P=0.545          P=1.000          P=1.000N         P=1.000          P=0.309N        | 
|POLY 3             |        (e)              P=0.487          (e)              (e)              (e)              P=0.204N        | 
|POLY 1.5           |        (e)              P=0.506          (e)              (e)              (e)              P=0.224N        | 
|POLY 6             |        (e)              P=0.482          (e)              (e)              (e)              P=0.199N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.159N         P=0.556          P=1.000          P=1.000          P=1.000          P=0.304N        | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Mammary Gland                                                                                                                    | 
|     Hyperplasia                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/1 (0%)         0/1 (0%)         0/0 (0%)         0/2 (0%)         3/8 (38%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.05           0/0.05           0/0.00           0/0.10           3/3.25          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             92.4%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/1 (0%)         0/1 (0%)         0/0 (0%)         0/2 (0%)         3/8 (37.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.036 *        (e)              (e)              (e)              (e)              P=0.107         | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              P=0.022 *       | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              P=0.031 *       | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              P=0.020 *       | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.032 *        (e)              (e)              (e)              (e)              P=0.100         | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 8       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Ovary                                                                                                                            | 
|     Atrophy                                                                                                                     | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        8/8 (100%)       0/1 (0%)         0/2 (0%)         0/1 (0%)         0/0 (0%)         7/8 (88%)       | 
|POLY-3 RATE (b)    |        8/8.00           0/0.05           0/0.10           0/0.05           0/0.00           7/7.05          | 
|POLY-3 PERCENT (g) |        100.0%           0.0%             0.0%             0.0%             0.0%             99.3%           | 
|INT SACRIFICE 1 (c)|        8/8 (100%)       0/1 (0%)         0/2 (0%)         0/1 (0%)         0/0 (0%)         7/8 (87.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.339          P=0.108N         P=0.020N*        P=0.108N         (e)              P=0.500N        | 
|POLY 3             |        (e)              P=0.111N         P=0.022 *        P=0.111N         (e)              P=0.476N        | 
|POLY 1.5           |        (e)              P=0.111N         P=0.022 *        P=0.111N         (e)              P=0.480N        | 
|POLY 6             |        (e)              P=0.111N         P=0.022 *        P=0.111N         (e)              P=0.478N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.335          P=0.111N         P=0.022N*        P=0.111N         (e)              P=0.500N        | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Ovary                                                                                                                            | 
|     Cyst                                                                                                                        | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        1/8 (13%)        0/1 (0%)         2/2 (100%)       0/1 (0%)         0/0 (0%)         0/8 (0%)        | 
|POLY-3 RATE (b)    |        1/1.34           0/0.05           2/2.00           0/0.05           0/0.00           0/0.39          | 
|POLY-3 PERCENT (g) |        74.4%            0.0%             100.0%           0.0%             0.0%             0.0%            | 
|INT SACRIFICE 1 (c)|        1/8 (12.5%)      0/1 (0%)         2/2 (100%)       0/1 (0%)         0/0 (0%)         0/8 (0%)        | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              366 (I)          ---              ---              ---             | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.152N         P=0.892N         P=0.070          P=0.892N         P=1.000N         P=0.500N        | 
|POLY 3             |        (e)              P=0.399N         P<0.001 **       P=0.399N         (e)              P=0.173N        | 
|POLY 1.5           |        (e)              P=0.504N         P=0.003 **       P=0.504N         (e)              P=0.228N        | 
|POLY 6             |        (e)              P=0.371N         P<0.001 **       P=0.371N         (e)              P=0.159N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.146N         P=0.889N         P=0.067          P=0.889N         P=1.000          P=0.500N        | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 9       
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Pituitary Gland                                                                                                                  | 
|     Hyperplasia                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.00           0/0.00           0/0.00           0/0.00           2/2.30          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.143          (e)              (e)              (e)              (e)              P=0.232         | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              P=0.069         | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              P=0.093         | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              P=0.064         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.135          (e)              (e)              (e)              (e)              P=0.233         | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Spleen                                                                                                                           | 
|     Pigmentation                                                                                                                | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        8/8 (100%)       0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         8/8 (100%)      | 
|POLY-3 RATE (b)    |        8/8.00           0/0.00           0/0.00           0/0.00           0/0.00           8/8.00          | 
|POLY-3 PERCENT (g) |        100.0%           0.0%             0.0%             0.0%             0.0%             100.0%          | 
|INT SACRIFICE 1 (c)|        8/8 (100%)       0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         8/8 (100%)      | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|POLY 3             |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|POLY 1.5           |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|POLY 6             |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|ORDER RESTRICTED   |        (e)              (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 10      
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Thymus                                                                                                                           | 
|     Atrophy                                                                                                                     | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        5/8 (63%)        4/8 (50%)        6/8 (75%)        6/8 (75%)        5/8 (63%)        7/8 (88%)       | 
|POLY-3 RATE (b)    |        5/5.15           4/4.20           6/6.10           6/6.10           5/5.15           7/7.05          | 
|POLY-3 PERCENT (g) |        97.1%            95.3%            98.4%            98.4%            97.1%            99.3%           | 
|INT SACRIFICE 1 (c)|        5/8 (62.5%)      4/8 (50%)        6/8 (75%)        6/8 (75%)        5/8 (62.5%)      7/8 (87.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.161          P=0.500N         P=0.500          P=0.500          P=0.691          P=0.288         | 
|POLY 3             |        P=0.162          P=0.420N         P=0.439          P=0.439          P=0.623          P=0.237         | 
|POLY 1.5           |        P=0.163          P=0.435N         P=0.450          P=0.450          P=0.634          P=0.247         | 
|POLY 6             |        P=0.162          P=0.417N         P=0.437          P=0.437          P=0.621          P=0.235         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.159          P=0.500N         P=0.500          P=0.500          P=0.696N         P=0.285         | 
|ORDER RESTRICTED   |        P=0.161          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Thyroid Gland: C-Cell                                                                                                            | 
|     Hyperplasia                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/8 (0%)         0/7 (0%)         0/8 (0%)         0/8 (0%)         2/8 (25%)       | 
|POLY-3 RATE (b)    |        0/0.39           0/0.39           0/0.34           0/0.39           0/0.39           2/2.30          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             0.0%             0.0%             0.0%             87.1%           | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/8 (0%)         0/7 (0%)         0/8 (0%)         0/8 (0%)         2/8 (25%)       | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.011 *        (e)              (e)              (e)              (e)              P=0.232         | 
|POLY 3             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.069         | 
|POLY 1.5           |        P=0.003 **       (e)              (e)              (e)              (e)              P=0.093         | 
|POLY 6             |        P<0.001 **       (e)              (e)              (e)              (e)              P=0.064         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.010 *        (e)              (e)              (e)              (e)              P=0.233         | 
|ORDER RESTRICTED   |        P=0.216          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 11      
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Thyroid Gland: Follicular Cell                                                                                                   | 
|     Hypertrophy                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        2/8 (25%)        3/8 (38%)        1/7 (14%)        3/8 (38%)        4/8 (50%)        5/8 (63%)       | 
|POLY-3 RATE (b)    |        2/2.30           3/3.25           1/1.30           3/3.25           4/4.20           5/5.15          | 
|POLY-3 PERCENT (g) |        87.1%            92.4%            77.2%            92.4%            95.3%            97.1%           | 
|INT SACRIFICE 1 (c)|        2/8 (25%)        3/8 (37.5%)      1/7 (14.3%)      3/8 (37.5%)      4/8 (50%)        5/8 (62.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.052          P=0.500          P=0.550N         P=0.500          P=0.309          P=0.165         | 
|POLY 3             |        P=0.045 *        P=0.366          P=0.361N         P=0.366          P=0.204          P=0.089         | 
|POLY 1.5           |        P=0.046 *        P=0.391          P=0.396N         P=0.391          P=0.224          P=0.101         | 
|POLY 6             |        P=0.044 *        P=0.360          P=0.351N         P=0.360          P=0.199          P=0.085         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.051          P=0.500          P=0.554N         P=0.500          P=0.304          P=0.157         | 
|ORDER RESTRICTED   |        P=0.174          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Uterus                                                                                                                           | 
|     Inflammation                                                                                                                | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        2/8 (25%)        0/1 (0%)         0/2 (0%)         0/1 (0%)         0/1 (0%)         1/8 (13%)       | 
|POLY-3 RATE (b)    |        2/2.30           0/0.05           0/0.10           0/0.05           0/0.05           1/1.34          | 
|POLY-3 PERCENT (g) |        87.1%            0.0%             0.0%             0.0%             0.0%             74.4%           | 
|INT SACRIFICE 1 (c)|        2/8 (25%)        0/1 (0%)         0/2 (0%)         0/1 (0%)         0/1 (0%)         1/8 (12.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.499N         P=0.748N         P=0.574N         P=0.748N         P=0.748N         P=0.500N        | 
|POLY 3             |        P=0.399N         P=0.326N         P=0.247N         P=0.326N         P=0.326N         P=0.314N        | 
|POLY 1.5           |        P=0.415N         P=0.403N         P=0.303N         P=0.403N         P=0.403N         P=0.348N        | 
|POLY 6             |        P=0.396N         P=0.306N         P=0.233N         P=0.306N         P=0.306N         P=0.304N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.498N         P=0.778N         P=0.622N         P=0.778N         P=0.778N         P=0.500N        | 
|ORDER RESTRICTED   |        P=0.097N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 12      
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Uterus                                                                                                                           | 
|     Inflammation Chronic                                                                                                        | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/1 (0%)         2/2 (100%)       0/1 (0%)         1/1 (100%)       0/8 (0%)        | 
|POLY-3 RATE (b)    |        0/0.39           0/0.05           2/2.00           0/0.05           1/1.00           0/0.39          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             100.0%           0.0%             100.0%           0.0%            | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/1 (0%)         2/2 (100%)       0/1 (0%)         1/1 (100%)       0/8 (0%)        | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              366 (I)          ---              366 (I)          ---             | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.326N         (e)              P=0.020 *        (e)              P=0.108          (e)             | 
|POLY 3             |        P=0.322N         (e)              P=0.022N*        (e)              P=0.111N         (e)             | 
|POLY 1.5           |        P=0.322N         (e)              P=0.022N*        (e)              P=0.111N         (e)             | 
|POLY 6             |        P=0.322N         (e)              P=0.022N*        (e)              P=0.111N         (e)             | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.322N         (e)              P=0.022 *        (e)              P=0.111          (e)             | 
|ORDER RESTRICTED   |        P=0.093          (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Uterus                                                                                                                           | 
|     Metaplasia                                                                                                                  | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        8/8 (100%)       1/1 (100%)       1/2 (50%)        0/1 (0%)         0/1 (0%)         7/8 (88%)       | 
|POLY-3 RATE (b)    |        8/8.00           1/1.00           1/1.05           0/0.05           0/0.05           7/7.05          | 
|POLY-3 PERCENT (g) |        100.0%           100.0%           95.3%            0.0%             0.0%             99.3%           | 
|INT SACRIFICE 1 (c)|        8/8 (100%)       1/1 (100%)       1/2 (50%)        0/1 (0%)         0/1 (0%)         7/8 (87.5%)     | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          366 (I)          366 (I)          ---              ---              366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.587N         (e)              P=0.227N         P=0.108N         P=0.108N         P=0.500N        | 
|POLY 3             |        P=0.610N         (e)              P=0.050N         P=0.111          P=0.111          P=0.476N        | 
|POLY 1.5           |        P=0.610N         (e)              P=0.066N         P=0.111          P=0.111          P=0.480N        | 
|POLY 6             |        P=0.611N         (e)              P=0.047N*        P=0.111          P=0.111          P=0.478N        | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.589N         (e)              P=0.200N         P=0.111N         P=0.111N         P=0.500N        | 
|ORDER RESTRICTED   |        P=0.002N**       (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
       Date:  07/14/03                           EXPERIMENT: 96007 TEST: 05                                            Page 13      
Statistical Analysis of Non-neoplastic Lesions in       Rats(SPRAGUE-DAWLEY)  -        TOXIC EQUIVALENCY FACTOR EVALUATION(         
                                         Terminal Sacrifice at 143 weeks                                                            
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Uterus: Endometrium                                                                                                              | 
|     Hyperplasia Cystic                                                                                                          | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        6/8 (75%)        0/1 (0%)         0/2 (0%)         1/1 (100%)       1/1 (100%)       8/8 (100%)      | 
|POLY-3 RATE (b)    |        6/6.10           0/0.05           0/0.10           1/1.00           1/1.00           8/8.00          | 
|POLY-3 PERCENT (g) |        98.4%            0.0%             0.0%             100.0%           100.0%           100.0%          | 
|INT SACRIFICE 1 (c)|        6/8 (75%)        0/1 (0%)         0/2 (0%)         1/1 (100%)       1/1 (100%)       8/8 (100%)      | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        366 (I)          ---              ---              366 (I)          366 (I)          366 (I)         | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.040 *        P=0.362N         P=0.142N         P=0.748          P=0.748          P=0.232         | 
|POLY 3             |        P=0.008 **       P=0.071N         P=0.016N*        P=0.724          P=0.724          P=0.191         | 
|POLY 1.5           |        P=0.008 **       P=0.103N         P=0.024N*        P=0.727          P=0.727          P=0.197         | 
|POLY 6             |        P=0.008 **       P=0.064N         P=0.014N*        P=0.725          P=0.725          P=0.191         | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.036 *        P=0.333N         P=0.133N         P=0.778          P=0.778          P=0.233         | 
|ORDER RESTRICTED   |        P<0.001 **       (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
|                   |                                                                                                             | 
|                   |                                                      Females                                                | 
|Dose               |        0 NG/KG          6 NG/KG          20 NG/KG         44 NG/KG         92 NG/KG         200             | 
|                   |                                                                                             NG/KG           | 
|=================================================================================================================================| 
|                                                                                                                                 | 
|Uterus: Epithelium                                                                                                               | 
|     Hyperplasia                                                                                                                 | 
|                                                                                                                                 | 
|                                                                                                                                 | 
|---------------------------------------------------------------------------------------------------------------------------------| 
|LESION RATES       |                                                                                                             | 
|-----------        |                                                                                                             | 
|OVERALL (a)        |        0/8 (0%)         0/1 (0%)         2/2 (100%)       0/1 (0%)         0/1 (0%)         0/8 (0%)        | 
|POLY-3 RATE (b)    |        0/0.39           0/0.05           2/2.00           0/0.05           0/0.05           0/0.39          | 
|POLY-3 PERCENT (g) |        0.0%             0.0%             100.0%           0.0%             0.0%             0.0%            | 
|INT SACRIFICE 1 (c)|        0/8 (0%)         0/1 (0%)         2/2 (100%)       0/1 (0%)         0/1 (0%)         0/8 (0%)        | 
|TERMINAL (d)       |        0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)         0/0 (0%)        | 
|FIRST INCIDENCE    |        ---              ---              366 (I)          ---              ---              ---             | 
|-------------------|                                                                                                             | 
|STATISTICAL TESTS  |                                                                                                             | 
|-------------------|                                                                                                             | 
|LIFE TABLE         |        P=0.277N         (e)              P=0.020 *        (e)              (e)              (e)             | 
|POLY 3             |        P=0.272N         (e)              P=0.022N*        (e)              (e)              (e)             | 
|POLY 1.5           |        P=0.272N         (e)              P=0.022N*        (e)              (e)              (e)             | 
|POLY 6             |        P=0.272N         (e)              P=0.022N*        (e)              (e)              (e)             | 
|LOGISTIC REGRESSION|        (e)              (e)              (e)              (e)              (e)              (e)             | 
|COCH-ARM / FISHERS |        P=0.272N         (e)              P=0.022 *        (e)              (e)              (e)             | 
|ORDER RESTRICTED   |        P=0.156N         (e)              (e)              (e)              (e)              (e)             | 
|=================================================================================================================================| 
(a)  Number of tumor-bearing animals /  number of animals examined at site.                                                         
(b)  Number of tumor-bearing animals / Poly-3 number                                                                                
(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.                                                                                 
Logistic regression is an alternative                                                                                               
 method for analyzing the incidence of non-fatal tumors. The Cochran-Armitage                                                       
and Fishers 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.                                                                                         
(g)  Poly-3 adjusted lifetime tumor incidence.                                                                                      
(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).