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TDMS Study 88124-03 Pathology Tables

NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08     
LAB: Battelle Northwest                                     INDIUM PHOSPHIDE                                   DATE: 10/28/99       
EXPERIMENT: 88124 TEST: 03                                                                                     TIME: 14:03:52       
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                   PAGE:       1        
CONT: NO1-ES-25335                              ROUTE: RESPIRATORY EXPOSURE WHOLE BODY                         NTP C#: C88124       
PATHOLOGIST: GRUMBEIN, S.                                                                                      CAS: 22398-80-7      
------------------------------------------------------------------------------------------------------------------------------------
                                                      FINAL#1 CORE STUDY RATS                                                       
               REASONS FOR REMOVAL:    25022 Accidently Killed                                                                      
                                       25019 Moribund Sacrifice                                                                     
                                       25020 Natural Death                                                                          
                                       25021 Terminal Sacrifice                                                                     
               REMOVAL DATE RANGE:     ALL                                                                                          
               TREATMENT GROUPS:       INCLUDE ALL                                                                                  
NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08
LAB: Battelle Northwest                                     INDIUM PHOSPHIDE                                   DATE: 10/28/99
EXPERIMENT: 88124 TEST: 03                                                                                     TIME: 14:03:52
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE
CONT: NO1-ES-25335                              ROUTE: RESPIRATORY EXPOSURE WHOLE BODY                         NTP C#: C88124
PATHOLOGIST: GRUMBEIN, S.                                                                                      CAS: 22398-80-7
Rats(FISCHER 344)
-----------------------------
FOR ALL DOSES THE TUMOR RATES IN THE FOLLOWING TISSUES/ORGANS ARE
BASED ON NUMBER OF TISSUES EXAMINED.  IN OTHER TISSUES/ORGANS RATES
ARE BASED ON THE NUMBER OF ANIMALS NECROPSIED.
                                                 ---------------
                                                 Adrenal Cortex
                                                 Adrenal Medulla
                                                 Brain
                                                 Clitoral/Preputial Gland
                                                 Heart
                                                 Islets, Pancreatic
                                                 Kidney
                                                 Liver
                                                 Lung
                                                 Nose
                                                 Ovary
                                                 Pancreas
                                                 Parathyroid Gland
                                                 Pituitary Gland
                                                 Prostate
                                                 Testes
                                                 Thymus
                                                 Thyroid Gland
                                                 Urinary Bladder
NTP                                        STATISTICAL ANALYSIS OF PRIMARY TUMORS                              REPORT: PEIRPT08   
LAB: Battelle Northwest                                     INDIUM PHOSPHIDE                                   DATE: 10/28/99     
EXPERIMENT: 88124 TEST: 03                                                                                     TIME: 14:03:52     
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                                      
CONT: NO1-ES-25335                              ROUTE: RESPIRATORY EXPOSURE WHOLE BODY                         NTP C#: C88124     
PATHOLOGIST: GRUMBEIN, S.                                                                                      CAS: 22398-80-7    
SUMMARY OF STATISTICALLY SIGNIFICANT (P<=.05) RESULTS
IN THE ANALYSIS OF                 INDIUM PHOSPHIDE
===============================================================
Male Rats
------------
Organ                                 Morphology
-----                                 ----------
Adrenal Medulla                        Pheochromocytoma Benign
                                       Pheochromocytoma: Benign, Complex, Malignant, NOS
Lung                                   Alveolar/Bronchiolar Adenoma
                                       Alveolar/Bronchiolar Carcinoma
                                       Alveolar/Bronchiolar Carcinoma or Alveolar/Bronchiolar Adenoma
                                       Squamous Cell Carcinoma
Pituitary Gland: Pars Distalis or Unspecified Site
                                       Carcinoma or Adenoma
Skin                                   Fibroma
                                       Fibroma, Fibrosarcoma, Sarcoma, Myxoma, Myxosarcoma, or Fibrous Histiocytoma
Testes                                 Adenoma
All Organs                             Leukemia: Lymphocytic, Monocytic, Mononuclear, or Undifferentiated
                                       Malignant Tumors
===============================================================
Female Rats
------------
Organ                                  Morphology
-----                                  ----------
Adrenal Medulla                        Pheochromocytoma Benign
                                       Pheochromocytoma: Benign, Complex, Malignant, NOS
Lung                                   Alveolar/Bronchiolar Adenoma
                                       Alveolar/Bronchiolar Carcinoma
                                       Alveolar/Bronchiolar Carcinoma or Alveolar/Bronchiolar Adenoma
Mammary Gland                          Carcinoma
                                       Fibroadenoma
                                       Fibroma, Fibroadenoma, Carcinoma, or Adenoma
Oral Mucosa                            Squamous Cell Carcinoma
All Organs                             Leukemia: Lymphocytic, Monocytic, Mononuclear, or Undifferentiated
===============================================================
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 1
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)        -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Medulla                                                                                                                  |
|     Pheochromocytoma Benign                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     10/50 (20%)  22/50 (44%)  16/49 (33%)  23/50 (46%) |2/50 (4%)    6/48 (13%)   2/50 (4%)    9/49 (18%)   |
|POLY-3 ADJUSTED (b)|     23.8%        48.8%        38.0%        51.1%       |4.6%         14.5%        4.5%         20.6%        |
|TERMINAL (d)       |     6/27 (22%)   17/29 (59%)  11/28 (39%)  15/26 (58%) |1/34 (3%)    4/31 (13%)   2/36 (6%)    6/34 (18%)   |
|FIRST INCIDENCE    |     537          635          537          525         |615          686          735 (T)      588          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.026 *    P=0.022 *    P=0.163      P=0.008 **  |P=0.031 *    P=0.124      P=0.674N     P=0.031 *    |
|POLY 3             |     P=0.044 *    P=0.011 *    P=0.117      P=0.006 **  |P=0.026 *    P=0.119      P=0.682N     P=0.026 *    |
|POLY 1.5           |     P=0.042 *    P=0.010 *    P=0.118      P=0.006 **  |P=0.027 *    P=0.117      P=0.686N     P=0.025 *    |
|POLY 6             |     P=0.045 *    P=0.013 *    P=0.119      P=0.006 **  |P=0.026 *    P=0.123      P=0.678N     P=0.025 *    |
|LOGISTIC REGRESSION|     P=0.038 *    P=0.018 *    P=0.123      P=0.007 **  |P=0.028 *    P=0.120      P=0.687N     P=0.027 *    |
|COCH-ARM / FISHERS |     P=0.036 *    P=0.009 **   P=0.115      P=0.005 **  |P=0.026 *    P=0.121      P=0.691N     P=0.023 *    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Medulla                                                                                                                  |
|     Pheochromocytoma Malignant                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    3/50 (6%)    3/49 (6%)    1/50 (2%)   |0/50 (0%)    0/48 (0%)    0/50 (0%)    1/49 (2%)    |
|POLY-3 ADJUSTED (b)|     0.0%         6.8%         7.4%         2.3%        |0.0%         0.0%         0.0%         2.3%         |
|TERMINAL (d)       |     0/27 (0%)    2/29 (7%)    2/28 (7%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    1/34 (3%)    |
|FIRST INCIDENCE    |     ---          628          698          684         |---          ---          ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.576N     P=0.142      P=0.129      P=0.506     |P=0.218      (e)          (e)          P=0.500      |
|POLY 3             |     P=0.526N     P=0.136      P=0.119      P=0.511     |P=0.217      (e)          (e)          P=0.501      |
|POLY 1.5           |     P=0.531N     P=0.130      P=0.118      P=0.508     |P=0.218      (e)          (e)          P=0.501      |
|POLY 6             |     P=0.524N     P=0.144      P=0.120      P=0.513     |P=0.216      (e)          (e)          P=0.500      |
|LOGISTIC REGRESSION|     P=0.544N     P=0.129      P=0.121      P=0.503     |(e)          (e)          (e)          P=0.500      |
|COCH-ARM / FISHERS |     P=0.549N     P=0.121      P=0.117      P=0.500     |P=0.213      (e)          (e)          P=0.495      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 2
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Medulla                                                                                                                  |
|     Pheochromocytoma: Benign, Complex, Malignant, NOS                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     10/50 (20%)  26/50 (52%)  18/49 (37%)  24/50 (48%) |2/50 (4%)    6/48 (13%)   2/50 (4%)    9/49 (18%)   |
|POLY-3 ADJUSTED (b)|     23.8%        57.1%        42.6%        53.1%       |4.6%         14.5%        4.5%         20.6%        |
|TERMINAL (d)       |     6/27 (22%)   19/29 (66%)  12/28 (43%)  15/26 (58%) |1/34 (3%)    4/31 (13%)   2/36 (6%)    6/34 (18%)   |
|FIRST INCIDENCE    |     537          628          537          525         |615          686          735 (T)      588          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.041 *    P=0.004 **   P=0.086      P=0.005 **  |P=0.031 *    P=0.124      P=0.674N     P=0.031 *    |
|POLY 3             |     P=0.070      P<0.001 **   P=0.051      P=0.003 **  |P=0.026 *    P=0.119      P=0.682N     P=0.026 *    |
|POLY 1.5           |     P=0.065      P<0.001 **   P=0.052      P=0.003 **  |P=0.027 *    P=0.117      P=0.686N     P=0.025 *    |
|POLY 6             |     P=0.074      P<0.001 **   P=0.052      P=0.003 **  |P=0.026 *    P=0.123      P=0.678N     P=0.025 *    |
|LOGISTIC REGRESSION|     P=0.058      P=0.002 **   P=0.056      P=0.004 **  |P=0.028 *    P=0.120      P=0.687N     P=0.027 *    |
|COCH-ARM / FISHERS |     P=0.055      P<0.001 **   P=0.052      P=0.003 **  |P=0.026 *    P=0.121      P=0.691N     P=0.023 *    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone                                                                                                                             |
|     Osteosarcoma                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    0/50 (0%)    1/50 (2%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     7.2%         0.0%         2.4%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     408          ---          435          671         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.434N     P=0.109N     P=0.296N     P=0.284N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.453N     P=0.110N     P=0.302N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.448N     P=0.113N     P=0.301N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.460N     P=0.107N     P=0.303N     P=0.301N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.573N     P=0.169N     P=0.398N     P=0.407N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.442N     P=0.121N     P=0.309N     P=0.309N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 3
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone                                                                                                                             |
|     Osteosarcoma or Osteoma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    0/50 (0%)    2/50 (4%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     7.2%         0.0%         4.7%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     408          ---          435          671         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.428N     P=0.109N     P=0.487N     P=0.284N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.447N     P=0.110N     P=0.494N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.441N     P=0.113N     P=0.494N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.455N     P=0.107N     P=0.494N     P=0.301N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.550N     P=0.169N     P=0.596N     P=0.407N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.437N     P=0.121N     P=0.500N     P=0.309N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral/Preputial Gland                                                                                                         |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    2/50 (4%)    0/50 (0%)    0/50 (0%)   |5/49 (10%)   4/47 (9%)    4/47 (9%)    6/49 (12%)   |
|POLY-3 ADJUSTED (b)|     2.5%         4.5%         0.0%         0.0%        |12.0%        10.2%        9.5%         14.0%        |
|TERMINAL (d)       |     1/27 (4%)    2/29 (7%)    0/29 (0%)    0/26 (0%)   |5/33 (15%)   4/29 (14%)   4/35 (11%)   6/34 (18%)   |
|FIRST INCIDENCE    |     733 (T)      733 (T)      ---          ---         |735 (T)      735 (T)      735 (T)      735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.218N     P=0.525      P=0.486N     P=0.508N    |P=0.411      P=0.582N     P=0.463N     P=0.521      |
|POLY 3             |     P=0.202N     P=0.530      P=0.495N     P=0.490N    |P=0.395      P=0.538N     P=0.492N     P=0.520      |
|POLY 1.5           |     P=0.204N     P=0.519      P=0.496N     P=0.492N    |P=0.394      P=0.539N     P=0.505N     P=0.518      |
|POLY 6             |     P=0.201N     P=0.542      P=0.493N     P=0.489N    |P=0.392      P=0.538N     P=0.477N     P=0.520      |
|LOGISTIC REGRESSION|     P=0.218N     P=0.525      (e)          (e)         |P=0.411      P=0.582N     P=0.463N     P=0.521      |
|COCH-ARM / FISHERS |     P=0.209N     P=0.500      P=0.500N     P=0.500N    |P=0.371      P=0.527N     P=0.527N     P=0.500      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 4
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral/Preputial Gland                                                                                                         |
|     Carcinoma                                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    0/50 (0%)    1/50 (2%)    0/50 (0%)   |0/49 (0%)    3/47 (6%)    3/47 (6%)    0/49 (0%)    |
|POLY-3 ADJUSTED (b)|     4.8%         0.0%         2.4%         0.0%        |0.0%         7.4%         7.1%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    1/29 (3%)    0/26 (0%)   |0/33 (0%)    1/29 (3%)    3/35 (9%)    0/34 (0%)    |
|FIRST INCIDENCE    |     537          ---          733 (T)      ---         |---          428          735 (T)      ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.274N     P=0.219N     P=0.483N     P=0.227N    |P=0.274N     P=0.116      P=0.131      (e)          |
|POLY 3             |     P=0.280N     P=0.223N     P=0.499N     P=0.231N    |P=0.272N     P=0.113      P=0.120      (e)          |
|POLY 1.5           |     P=0.276N     P=0.228N     P=0.497N     P=0.231N    |P=0.273N     P=0.111      P=0.117      (e)          |
|POLY 6             |     P=0.286N     P=0.219N     P=0.501N     P=0.233N    |P=0.272N     P=0.115      P=0.125      (e)          |
|LOGISTIC REGRESSION|     P=0.289N     P=0.287N     P=0.519N     P=0.292N    |P=0.304N     P=0.128      P=0.131      (e)          |
|COCH-ARM / FISHERS |     P=0.271N     P=0.247N     P=0.500N     P=0.247N    |P=0.286N     P=0.113      P=0.113      (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral/Preputial Gland                                                                                                         |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    2/50 (4%)    1/50 (2%)    0/50 (0%)   |5/49 (10%)   7/47 (15%)   7/47 (15%)   6/49 (12%)   |
|POLY-3 ADJUSTED (b)|     7.3%         4.5%         2.4%         0.0%        |12.0%        17.3%        16.6%        14.0%        |
|TERMINAL (d)       |     1/27 (4%)    2/29 (7%)    1/29 (3%)    0/26 (0%)   |5/33 (15%)   5/29 (17%)   7/35 (20%)   6/34 (18%)   |
|FIRST INCIDENCE    |     537          733 (T)      733 (T)      ---         |735 (T)      428          735 (T)      735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.091N     P=0.464N     P=0.289N     P=0.119N    |P=0.526N     P=0.306      P=0.419      P=0.521      |
|POLY 3             |     P=0.087N     P=0.471N     P=0.304N     P=0.113N    |P=0.554N     P=0.359      P=0.387      P=0.520      |
|POLY 1.5           |     P=0.086N     P=0.480N     P=0.302N     P=0.114N    |P=0.551N     P=0.350      P=0.373      P=0.518      |
|POLY 6             |     P=0.089N     P=0.463N     P=0.305N     P=0.115N    |P=0.560N     P=0.368      P=0.404      P=0.520      |
|LOGISTIC REGRESSION|     P=0.086N     P=0.508N     P=0.310N     P=0.136N    |P=0.545N     P=0.340      P=0.419      P=0.521      |
|COCH-ARM / FISHERS |     P=0.086N     P=0.500N     P=0.309N     P=0.121N    |P=0.572      P=0.350      P=0.350      P=0.500      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 5
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Heart                                                                                                                            |
|     Schwannoma Benign                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    0/50 (0%)    0/50 (0%)    1/50 (2%)   |0/50 (0%)    1/50 (2%)    0/50 (0%)    2/50 (4%)    |
|POLY-3 ADJUSTED (b)|     2.5%         0.0%         0.0%         2.4%        |0.0%         2.4%         0.0%         4.7%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    1/26 (4%)   |0/34 (0%)    1/31 (3%)    0/36 (0%)    2/34 (6%)    |
|FIRST INCIDENCE    |     672          ---          ---          733 (T)     |---          735 (T)      ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.529      P=0.463N     P=0.506N     P=0.755N    |P=0.156      P=0.482      (e)          P=0.238      |
|POLY 3             |     P=0.529      P=0.484N     P=0.496N     P=0.751N    |P=0.151      P=0.498      (e)          P=0.238      |
|POLY 1.5           |     P=0.533      P=0.489N     P=0.497N     P=0.753N    |P=0.152      P=0.497      (e)          P=0.238      |
|POLY 6             |     P=0.523      P=0.478N     P=0.495N     P=0.752N    |P=0.150      P=0.498      (e)          P=0.237      |
|LOGISTIC REGRESSION|     P=0.539      P=0.505N     P=0.500N     P=0.753N    |(e)          P=0.482      (e)          P=0.238      |
|COCH-ARM / FISHERS |     P=0.536      P=0.500N     P=0.500N     P=0.753N    |P=0.151      P=0.500      (e)          P=0.247      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Islets, Pancreatic                                                                                                               |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    2/50 (4%)    2/50 (4%)    3/50 (6%)   |1/50 (2%)    0/50 (0%)    0/50 (0%)    1/49 (2%)    |
|POLY-3 ADJUSTED (b)|     2.5%         4.5%         4.8%         7.0%        |2.3%         0.0%         0.0%         2.3%         |
|TERMINAL (d)       |     1/27 (4%)    1/29 (3%)    2/29 (7%)    2/26 (8%)   |1/34 (3%)    0/31 (0%)    0/36 (0%)    1/34 (3%)    |
|FIRST INCIDENCE    |     733 (T)      701          733 (T)      658         |735 (T)      ---          ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.246      P=0.534      P=0.525      P=0.310     |P=0.544      P=0.518N     P=0.489N     P=0.762      |
|POLY 3             |     P=0.279      P=0.531      P=0.509      P=0.325     |P=0.539      P=0.502N     P=0.491N     P=0.760N     |
|POLY 1.5           |     P=0.279      P=0.520      P=0.507      P=0.320     |P=0.539      P=0.503N     P=0.494N     P=0.760N     |
|POLY 6             |     P=0.278      P=0.544      P=0.512      P=0.328     |P=0.537      P=0.502N     P=0.488N     P=0.760N     |
|LOGISTIC REGRESSION|     P=0.266      P=0.547      P=0.525      P=0.323     |P=0.544      (e)          (e)          P=0.762      |
|COCH-ARM / FISHERS |     P=0.269      P=0.500      P=0.500      P=0.309     |P=0.532      P=0.500N     P=0.500N     P=0.747      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 6
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Islets, Pancreatic                                                                                                               |
|     Carcinoma                                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    0/50 (0%)    4/50 (8%)    3/50 (6%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/49 (0%)    |
|POLY-3 ADJUSTED (b)|     4.9%         0.0%         9.5%         7.0%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    2/29 (7%)    1/26 (4%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     617          ---          649          684         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.240      P=0.214N     P=0.366      P=0.501     |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.246      P=0.221N     P=0.349      P=0.519     |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.250      P=0.226N     P=0.346      P=0.516     |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.238      P=0.216N     P=0.353      P=0.520     |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.252      P=0.249N     P=0.341      P=0.510     |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.249      P=0.247N     P=0.339      P=0.500     |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Islets, Pancreatic                                                                                                               |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    2/50 (4%)    6/50 (12%)   6/50 (12%)  |1/50 (2%)    0/50 (0%)    0/50 (0%)    1/49 (2%)    |
|POLY-3 ADJUSTED (b)|     7.3%         4.5%         14.3%        14.0%       |2.3%         0.0%         0.0%         2.3%         |
|TERMINAL (d)       |     1/27 (4%)    1/29 (3%)    4/29 (14%)   3/26 (12%)  |1/34 (3%)    0/31 (0%)    0/36 (0%)    1/34 (3%)    |
|FIRST INCIDENCE    |     617          701          649          658         |735 (T)      ---          ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.113      P=0.452N     P=0.278      P=0.253     |P=0.544      P=0.518N     P=0.489N     P=0.762      |
|POLY 3             |     P=0.126      P=0.465N     P=0.253      P=0.265     |P=0.539      P=0.502N     P=0.491N     P=0.760N     |
|POLY 1.5           |     P=0.128      P=0.477N     P=0.251      P=0.260     |P=0.539      P=0.503N     P=0.494N     P=0.760N     |
|POLY 6             |     P=0.122      P=0.454N     P=0.257      P=0.267     |P=0.537      P=0.502N     P=0.488N     P=0.760N     |
|LOGISTIC REGRESSION|     P=0.127      P=0.478N     P=0.253      P=0.263     |P=0.544      (e)          (e)          P=0.762      |
|COCH-ARM / FISHERS |     P=0.124      P=0.500N     P=0.243      P=0.243     |P=0.532      P=0.500N     P=0.500N     P=0.747      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 7
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Adenoma                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     6/50 (12%)   13/50 (26%)  27/50 (54%)  30/50 (60%) |0/50 (0%)    7/50 (14%)   5/50 (10%)   19/50 (38%)  |
|POLY-3 ADJUSTED (b)|     14.8%        29.1%        62.9%        67.0%       |0.0%         16.5%        11.2%        43.6%        |
|TERMINAL (d)       |     4/27 (15%)   8/29 (28%)   21/29 (72%)  20/26 (77%) |0/34 (0%)    5/31 (16%)   5/36 (14%)   17/34 (50%)  |
|FIRST INCIDENCE    |     697          685          644          525         |---          694          735 (T)      610          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P<0.001 **   P=0.106      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.008 **   P=0.038 *    P<0.001 **   |
|POLY 3             |     P<0.001 **   P=0.090      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.007 **   P=0.034 *    P<0.001 **   |
|POLY 1.5           |     P<0.001 **   P=0.078      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.007 **   P=0.033 *    P<0.001 **   |
|POLY 6             |     P<0.001 **   P=0.105      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.007 **   P=0.036 *    P<0.001 **   |
|LOGISTIC REGRESSION|     P<0.001 **   P=0.106      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.009 **   P=0.038 *    P<0.001 **   |
|COCH-ARM / FISHERS |     P<0.001 **   P=0.062      P<0.001 **   P<0.001 **  |P<0.001 **   P=0.006 **   P=0.028 *    P<0.001 **   |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Carcinoma                                                                                              |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    10/50 (20%)  8/50 (16%)   16/50 (32%) |1/50 (2%)    3/50 (6%)    1/50 (2%)    11/50 (22%)  |
|POLY-3 ADJUSTED (b)|     2.5%         22.4%        19.3%        36.5%       |2.3%         7.1%         2.2%         25.3%        |
|TERMINAL (d)       |     0/27 (0%)    6/29 (21%)   7/29 (24%)   9/26 (35%)  |1/34 (3%)    1/31 (3%)    1/36 (3%)    10/34 (29%)  |
|FIRST INCIDENCE    |     639          635          710          621         |735 (T)      695          735 (T)      519          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P<0.001 **   P=0.010 *    P=0.024 *    P<0.001 **  |P<0.001 **   P=0.289      P=0.749N     P=0.003 **   |
|POLY 3             |     P<0.001 **   P=0.006 **   P=0.016 *    P<0.001 **  |P<0.001 **   P=0.302      P=0.751N     P=0.002 **   |
|POLY 1.5           |     P<0.001 **   P=0.005 **   P=0.016 *    P<0.001 **  |P<0.001 **   P=0.300      P=0.754N     P=0.002 **   |
|POLY 6             |     P<0.001 **   P=0.007 **   P=0.016 *    P<0.001 **  |P<0.001 **   P=0.305      P=0.747N     P=0.002 **   |
|LOGISTIC REGRESSION|     P<0.001 **   P=0.008 **   P=0.019 *    P<0.001 **  |P<0.001 **   P=0.301      P=0.749N     P=0.003 **   |
|COCH-ARM / FISHERS |     P<0.001 **   P=0.004 **   P=0.015 *    P<0.001 **  |P<0.001 **   P=0.309      P=0.753N     P=0.002 **   |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 8
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Alveolar/Bronchiolar Carcinoma or Alveolar/Bronchiolar                                                                      |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     7/50 (14%)   22/50 (44%)  30/50 (60%)  35/50 (70%) |1/50 (2%)    10/50 (20%)  6/50 (12%)   26/50 (52%)  |
|POLY-3 ADJUSTED (b)|     17.1%        48.7%        69.8%        76.1%       |2.3%         23.5%        13.5%        58.8%        |
|TERMINAL (d)       |     4/27 (15%)   14/29 (48%)  24/29 (83%)  21/26 (81%) |1/34 (3%)    6/31 (19%)   6/36 (17%)   23/34 (68%)  |
|FIRST INCIDENCE    |     639          635          644          525         |735 (T)      694          735 (T)      519          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P<0.001 **   P=0.005 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.005 **   P=0.066      P<0.001 **   |
|POLY 3             |     P<0.001 **   P<0.001 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.004 **   P=0.063      P<0.001 **   |
|POLY 1.5           |     P<0.001 **   P<0.001 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.004 **   P=0.060      P<0.001 **   |
|POLY 6             |     P<0.001 **   P=0.002 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.004 **   P=0.065      P<0.001 **   |
|LOGISTIC REGRESSION|     P<0.001 **   P=0.002 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.005 **   P=0.066      P<0.001 **   |
|COCH-ARM / FISHERS |     P<0.001 **   P<0.001 **   P<0.001 **   P<0.001 **  |P<0.001 **   P=0.004 **   P=0.056      P<0.001 **   |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Squamous Cell Carcinoma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    0/50 (0%)    0/50 (0%)    4/50 (8%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     0.0%         0.0%         0.0%         9.1%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     ---          ---          ---          545         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.002 **   (e)          (e)          P=0.075     |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.002 **   (e)          (e)          P=0.071     |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.002 **   (e)          (e)          P=0.068     |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.002 **   (e)          (e)          P=0.075     |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P<0.001 **   (e)          (e)          P=0.035 *   |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.002 **   (e)          (e)          P=0.059     |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 9
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Carcinoma                                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    0/50 (0%)    1/50 (2%)    1/50 (2%)   |0/50 (0%)    8/50 (16%)   3/50 (6%)    2/50 (4%)    |
|POLY-3 ADJUSTED (b)|     0.0%         0.0%         2.4%         2.4%        |0.0%         18.9%        6.7%         4.7%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    1/29 (3%)    1/26 (4%)   |0/34 (0%)    6/31 (19%)   1/36 (3%)    2/34 (6%)    |
|FIRST INCIDENCE    |     ---          ---          733 (T)      733 (T)     |---          683          714          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.285      (e)          P=0.514      P=0.492     |P=0.336N     P=0.004 **   P=0.136      P=0.238      |
|POLY 3             |     P=0.306      (e)          P=0.505      P=0.510     |P=0.344N     P=0.003 **   P=0.127      P=0.238      |
|POLY 1.5           |     P=0.308      (e)          P=0.504      P=0.508     |P=0.344N     P=0.003 **   P=0.124      P=0.238      |
|POLY 6             |     P=0.303      (e)          P=0.507      P=0.511     |P=0.345N     P=0.003 **   P=0.131      P=0.237      |
|LOGISTIC REGRESSION|     (e)          (e)          P=0.514      P=0.492     |P=0.346N     P=0.004 **   P=0.130      P=0.238      |
|COCH-ARM / FISHERS |     P=0.303      (e)          P=0.500      P=0.500     |P=0.350N     P=0.003 **   P=0.121      P=0.247      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Fibroadenoma                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    1/50 (2%)    0/50 (0%)    1/50 (2%)   |20/50 (40%)  19/50 (38%)  18/50 (36%)  12/50 (24%)  |
|POLY-3 ADJUSTED (b)|     5.0%         2.3%         0.0%         2.4%        |46.1%        44.0%        38.8%        27.7%        |
|TERMINAL (d)       |     2/27 (7%)    1/29 (3%)    0/29 (0%)    1/26 (4%)   |18/34 (53%)  15/31 (48%)  12/36 (33%)  11/34 (32%)  |
|FIRST INCIDENCE    |     733 (T)      733 (T)      ---          733 (T)     |590          580          566          593          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.523N     P=0.475N     P=0.222N     P=0.513N    |P=0.035N*    P=0.533      P=0.328N     P=0.059N     |
|POLY 3             |     P=0.505N     P=0.470N     P=0.231N     P=0.483N    |P=0.036N*    P=0.509N     P=0.312N     P=0.056N     |
|POLY 1.5           |     P=0.502N     P=0.481N     P=0.233N     P=0.487N    |P=0.036N*    P=0.519N     P=0.354N     P=0.058N     |
|POLY 6             |     P=0.510N     P=0.458N     P=0.229N     P=0.481N    |P=0.038N*    P=0.497N     P=0.262N     P=0.055N     |
|LOGISTIC REGRESSION|     P=0.523N     P=0.475N     (e)          P=0.513N    |P=0.036N*    P=0.513N     P=0.353N     P=0.058N     |
|COCH-ARM / FISHERS |     P=0.500N     P=0.500N     P=0.247N     P=0.500N    |P=0.043N*    P=0.500N     P=0.418N     P=0.066N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 10
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Fibroma, Fibroadenoma, Carcinoma, or Adenoma                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    1/50 (2%)    1/50 (2%)    2/50 (4%)   |20/50 (40%)  26/50 (52%)  21/50 (42%)  13/50 (26%)  |
|POLY-3 ADJUSTED (b)|     5.0%         2.3%         2.4%         4.7%        |46.1%        59.9%        45.1%        30.0%        |
|TERMINAL (d)       |     2/27 (7%)    1/29 (3%)    1/29 (3%)    2/26 (8%)   |18/34 (53%)  20/31 (65%)  13/36 (36%)  12/34 (35%)  |
|FIRST INCIDENCE    |     733 (T)      733 (T)      733 (T)      733 (T)     |590          580          566          593          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.493      P=0.475N     P=0.475N     P=0.683     |P=0.014N*    P=0.083      P=0.550N     P=0.091N     |
|POLY 3             |     P=0.520      P=0.470N     P=0.491N     P=0.677N    |P=0.012N*    P=0.136      P=0.547N     P=0.088N     |
|POLY 1.5           |     P=0.523      P=0.481N     P=0.493N     P=0.680N    |P=0.012N*    P=0.133      P=0.572      P=0.090N     |
|POLY 6             |     P=0.513      P=0.458N     P=0.488N     P=0.675N    |P=0.012N*    P=0.143      P=0.482N     P=0.088N     |
|LOGISTIC REGRESSION|     P=0.493      P=0.475N     P=0.475N     P=0.683     |P=0.012N*    P=0.132      P=0.572      P=0.090N     |
|COCH-ARM / FISHERS |     P=0.521      P=0.500N     P=0.500N     P=0.691N    |P=0.017N*    P=0.158      P=0.500      P=0.101N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Oral Cavity (Oral Mucosa, Tongue, Pharynx, Tooth, Gingiva)                                                                       |
|     Papilloma Squamous or Papilloma                                                                                             |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    0/50 (0%)    3/50 (6%)    1/50 (2%)   |0/50 (0%)    1/50 (2%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     2.5%         0.0%         7.2%         2.4%        |0.0%         2.4%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    2/29 (7%)    1/26 (4%)   |0/34 (0%)    1/31 (3%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      ---          698          733 (T)     |---          735 (T)      ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.531      P=0.486N     P=0.328      P=0.754     |P=0.571N     P=0.482      (e)          (e)          |
|POLY 3             |     P=0.558      P=0.483N     P=0.315      P=0.750N    |P=0.579N     P=0.498      (e)          (e)          |
|POLY 1.5           |     P=0.562      P=0.489N     P=0.313      P=0.752N    |P=0.579N     P=0.497      (e)          (e)          |
|POLY 6             |     P=0.550      P=0.476N     P=0.319      P=0.749N    |P=0.579N     P=0.498      (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.554      (e)          P=0.318      P=0.754     |(e)          P=0.482      (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.558      P=0.500N     P=0.309      P=0.753N    |P=0.576N     P=0.500      (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 11
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Oral Cavity (Oral Mucosa, Tongue, Pharynx, Tooth, Gingiva)                                                                       |
|     Squamous Cell Carcinoma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)   |0/50 (0%)    0/50 (0%)    1/50 (2%)    2/50 (4%)    |
|POLY-3 ADJUSTED (b)|     0.0%         0.0%         0.0%         0.0%        |0.0%         0.0%         2.2%         4.7%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    1/36 (3%)    2/34 (6%)    |
|FIRST INCIDENCE    |     ---          ---          ---          ---         |---          ---          735 (T)      735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     (e)          (e)          (e)          (e)         |P=0.087      (e)          P=0.511      P=0.238      |
|POLY 3             |     (e)          (e)          (e)          (e)         |P=0.085      (e)          P=0.509      P=0.238      |
|POLY 1.5           |     (e)          (e)          (e)          (e)         |P=0.085      (e)          P=0.506      P=0.238      |
|POLY 6             |     (e)          (e)          (e)          (e)         |P=0.084      (e)          P=0.512      P=0.237      |
|LOGISTIC REGRESSION|     (e)          (e)          (e)          (e)         |(e)          (e)          P=0.511      P=0.238      |
|COCH-ARM / FISHERS |     (e)          (e)          (e)          (e)         |P=0.084      (e)          P=0.500      P=0.247      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Oral Cavity (Oral Mucosa, Tongue, Pharynx, Tooth, Gingiva)                                                                       |
|     Squamous Cell Carcinoma, Papilloma Squamous, or Papilloma                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    0/50 (0%)    3/50 (6%)    1/50 (2%)   |0/50 (0%)    1/50 (2%)    1/50 (2%)    2/50 (4%)    |
|POLY-3 ADJUSTED (b)|     2.5%         0.0%         7.2%         2.4%        |0.0%         2.4%         2.2%         4.7%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    2/29 (7%)    1/26 (4%)   |0/34 (0%)    1/31 (3%)    1/36 (3%)    2/34 (6%)    |
|FIRST INCIDENCE    |     733 (T)      ---          698          733 (T)     |---          735 (T)      735 (T)      735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.531      P=0.486N     P=0.328      P=0.754     |P=0.201      P=0.482      P=0.511      P=0.238      |
|POLY 3             |     P=0.558      P=0.483N     P=0.315      P=0.750N    |P=0.196      P=0.498      P=0.509      P=0.238      |
|POLY 1.5           |     P=0.562      P=0.489N     P=0.313      P=0.752N    |P=0.197      P=0.497      P=0.506      P=0.238      |
|POLY 6             |     P=0.550      P=0.476N     P=0.319      P=0.749N    |P=0.195      P=0.498      P=0.512      P=0.237      |
|LOGISTIC REGRESSION|     P=0.554      (e)          P=0.318      P=0.754     |(e)          P=0.482      P=0.511      P=0.238      |
|COCH-ARM / FISHERS |     P=0.558      P=0.500N     P=0.309      P=0.753N    |P=0.194      P=0.500      P=0.500      P=0.247      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 12
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Oral Mucosa                                                                                                                      |
|     Squamous Cell Carcinoma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    2/50 (4%)    |
|POLY-3 ADJUSTED (b)|     0.0%         0.0%         0.0%         0.0%        |0.0%         0.0%         0.0%         4.7%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    2/34 (6%)    |
|FIRST INCIDENCE    |     ---          ---          ---          ---         |---          ---          ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     (e)          (e)          (e)          (e)         |P=0.043 *    (e)          (e)          P=0.238      |
|POLY 3             |     (e)          (e)          (e)          (e)         |P=0.041 *    (e)          (e)          P=0.238      |
|POLY 1.5           |     (e)          (e)          (e)          (e)         |P=0.041 *    (e)          (e)          P=0.238      |
|POLY 6             |     (e)          (e)          (e)          (e)         |P=0.041 *    (e)          (e)          P=0.237      |
|LOGISTIC REGRESSION|     (e)          (e)          (e)          (e)         |(e)          (e)          (e)          P=0.238      |
|COCH-ARM / FISHERS |     (e)          (e)          (e)          (e)         |P=0.042 *    (e)          (e)          P=0.247      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Oral Mucosa                                                                                                                      |
|     Squamous Cell Papilloma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    0/50 (0%)    3/50 (6%)    1/50 (2%)   |0/50 (0%)    1/50 (2%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     2.5%         0.0%         7.2%         2.4%        |0.0%         2.4%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    2/29 (7%)    1/26 (4%)   |0/34 (0%)    1/31 (3%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      ---          698          733 (T)     |---          735 (T)      ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.531      P=0.486N     P=0.328      P=0.754     |P=0.571N     P=0.482      (e)          (e)          |
|POLY 3             |     P=0.558      P=0.483N     P=0.315      P=0.750N    |P=0.579N     P=0.498      (e)          (e)          |
|POLY 1.5           |     P=0.562      P=0.489N     P=0.313      P=0.752N    |P=0.579N     P=0.497      (e)          (e)          |
|POLY 6             |     P=0.550      P=0.476N     P=0.319      P=0.749N    |P=0.579N     P=0.498      (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.554      (e)          P=0.318      P=0.754     |(e)          P=0.482      (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.558      P=0.500N     P=0.309      P=0.753N    |P=0.576N     P=0.500      (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 13
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary                                                                                                                            |
|     Granulosa Cell Tumor: Benign, Malignant, NOS                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |1/50 (2%)    1/50 (2%)    2/50 (4%)    0/49 (0%)    |
|POLY-3 ADJUSTED (b)|                                                        |2.3%         2.4%         4.4%         0.0%         |
|TERMINAL (d)       |                                                        |1/34 (3%)    1/31 (3%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |                                                        |735 (T)      735 (T)      225          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |P=0.331N     P=0.741      P=0.521      P=0.500N     |
|POLY 3             |                                                        |P=0.329N     P=0.758      P=0.524      P=0.499N     |
|POLY 1.5           |                                                        |P=0.329N     P=0.757      P=0.517      P=0.499N     |
|POLY 6             |                                                        |P=0.330N     P=0.759      P=0.532      P=0.500N     |
|LOGISTIC REGRESSION|                                                        |P=0.391N     P=0.741      P=0.440      (e)          |
|COCH-ARM / FISHERS |                                                        |P=0.338N     P=0.753N     P=0.500      P=0.505N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis or Unspecified Site                                                                               |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     36/49 (73%)  33/50 (66%)  31/50 (62%)  30/50 (60%) |30/50 (60%)  27/50 (54%)  29/48 (60%)  25/49 (51%)  |
|POLY-3 ADJUSTED (b)|     79.6%        69.2%        67.6%        64.0%       |64.2%        60.6%        65.7%        56.8%        |
|TERMINAL (d)       |     21/27 (78%)  20/29 (69%)  19/29 (66%)  16/26 (62%) |20/34 (59%)  20/31 (65%)  23/34 (68%)  21/34 (62%)  |
|FIRST INCIDENCE    |     495          526          435          525         |397          551          448          610          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.298N     P=0.193N     P=0.173N     P=0.204N    |P=0.194N     P=0.491N     P=0.466N     P=0.237N     |
|POLY 3             |     P=0.110N     P=0.175N     P=0.135N     P=0.067N    |P=0.288N     P=0.444N     P=0.529      P=0.302N     |
|POLY 1.5           |     P=0.108N     P=0.199N     P=0.128N     P=0.072N    |P=0.249N     P=0.424N     P=0.548      P=0.262N     |
|POLY 6             |     P=0.123N     P=0.160N     P=0.155N     P=0.073N    |P=0.349N     P=0.460N     P=0.507      P=0.362N     |
|LOGISTIC REGRESSION|     P=0.121N     P=0.193N     P=0.132N     P=0.083N    |P=0.199N     P=0.367N     P=0.556N     P=0.204N     |
|COCH-ARM / FISHERS |     P=0.138N     P=0.278N     P=0.157N     P=0.113N    |P=0.261N     P=0.343N     P=0.565      P=0.243N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 14
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis or Unspecified Site                                                                               |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     37/49 (76%)  34/50 (68%)  31/50 (62%)  30/50 (60%) |30/50 (60%)  27/50 (54%)  30/48 (63%)  25/49 (51%)  |
|POLY-3 ADJUSTED (b)|     81.8%        71.2%        67.6%        64.0%       |64.2%        60.6%        67.3%        56.8%        |
|TERMINAL (d)       |     22/27 (82%)  20/29 (69%)  19/29 (66%)  16/26 (62%) |20/34 (59%)  20/31 (65%)  23/34 (68%)  21/34 (62%)  |
|FIRST INCIDENCE    |     495          526          435          525         |397          551          448          610          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.240N     P=0.190N     P=0.132N     P=0.162N    |P=0.194N     P=0.491N     P=0.533N     P=0.237N     |
|POLY 3             |     P=0.065N     P=0.161N     P=0.083N     P=0.038N*   |P=0.286N     P=0.444N     P=0.465      P=0.302N     |
|POLY 1.5           |     P=0.066N     P=0.188N     P=0.081N     P=0.042N*   |P=0.247N     P=0.424N     P=0.475      P=0.262N     |
|POLY 6             |     P=0.074N     P=0.144N     P=0.096N     P=0.040N*   |P=0.348N     P=0.460N     P=0.457      P=0.362N     |
|LOGISTIC REGRESSION|     P=0.076N     P=0.178N     P=0.087N     P=0.051N    |P=0.198N     P=0.367N     P=0.522      P=0.204N     |
|COCH-ARM / FISHERS |     P=0.091N     P=0.272N     P=0.109N     P=0.075N    |P=0.258N     P=0.343N     P=0.482      P=0.243N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Prostate                                                                                                                         |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    2/50 (4%)    2/50 (4%)    2/50 (4%)   |                                                    |
|POLY-3 ADJUSTED (b)|     2.5%         4.5%         4.8%         4.7%        |                                                    |
|TERMINAL (d)       |     1/27 (4%)    2/29 (7%)    2/29 (7%)    2/26 (8%)   |                                                    |
|FIRST INCIDENCE    |     733 (T)      733 (T)      733 (T)      733 (T)     |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.459      P=0.525      P=0.525      P=0.487     |                                                    |
|POLY 3             |     P=0.501      P=0.530      P=0.509      P=0.517     |                                                    |
|POLY 1.5           |     P=0.500      P=0.519      P=0.507      P=0.513     |                                                    |
|POLY 6             |     P=0.497      P=0.542      P=0.512      P=0.519     |                                                    |
|LOGISTIC REGRESSION|     P=0.459      P=0.525      P=0.525      P=0.487     |                                                    |
|COCH-ARM / FISHERS |     P=0.490      P=0.500      P=0.500      P=0.500     |                                                    |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 15
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Basal or Sq. Cell Carcinoma, Carcinoma, Basosq. Tumor                                                                       |
|     (M or B), Basal Cell Adenoma, Adenoma, Papilloma, Sq Papilloma, Keratoacanthoma, Trichoepitheliom                           |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    4/50 (8%)    6/50 (12%)   3/50 (6%)   |1/50 (2%)    0/50 (0%)    3/50 (6%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     5.0%         9.0%         14.5%        7.0%        |2.3%         0.0%         6.7%         0.0%         |
|TERMINAL (d)       |     2/27 (7%)    3/29 (10%)   6/29 (21%)   2/26 (8%)   |0/34 (0%)    0/31 (0%)    3/36 (8%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      576          733 (T)      560         |566          ---          735 (T)      ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.547      P=0.375      P=0.152      P=0.493     |P=0.436N     P=0.505N     P=0.328      P=0.491N     |
|POLY 3             |     P=0.577N     P=0.383      P=0.139      P=0.528     |P=0.445N     P=0.505N     P=0.316      P=0.501N     |
|POLY 1.5           |     P=0.579N     P=0.366      P=0.138      P=0.521     |P=0.443N     P=0.504N     P=0.313      P=0.500N     |
|POLY 6             |     P=0.579N     P=0.402      P=0.140      P=0.534     |P=0.448N     P=0.506N     P=0.320      P=0.503N     |
|LOGISTIC REGRESSION|     P=0.589      P=0.376      P=0.152      P=0.519     |P=0.447N     P=0.476N     P=0.306      P=0.514N     |
|COCH-ARM / FISHERS |     P=0.584      P=0.339      P=0.134      P=0.500     |P=0.448N     P=0.500N     P=0.309      P=0.500N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Fibroma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    4/50 (8%)    7/50 (14%)   3/50 (6%)   |3/50 (6%)    0/50 (0%)    1/50 (2%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     2.5%         9.0%         16.8%        7.0%        |7.0%         0.0%         2.2%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    2/29 (7%)    6/29 (21%)   1/26 (4%)   |3/34 (9%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     672          686          665          672         |735 (T)      ---          716          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.466      P=0.224      P=0.040 *    P=0.326     |P=0.154N     P=0.137N     P=0.287N     P=0.121N     |
|POLY 3             |     P=0.514      P=0.206      P=0.032 *    P=0.323     |P=0.156N     P=0.120N     P=0.289N     P=0.117N     |
|POLY 1.5           |     P=0.512      P=0.196      P=0.032 *    P=0.319     |P=0.155N     P=0.121N     P=0.295N     P=0.118N     |
|POLY 6             |     P=0.508      P=0.216      P=0.032 *    P=0.324     |P=0.157N     P=0.119N     P=0.282N     P=0.117N     |
|LOGISTIC REGRESSION|     P=0.494      P=0.205      P=0.035 *    P=0.320     |P=0.157N     (e)          P=0.279N     (e)          |
|COCH-ARM / FISHERS |     P=0.493      P=0.181      P=0.030 *    P=0.309     |P=0.160N     P=0.121N     P=0.309N     P=0.121N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 16
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Fibroma, Fibrosarcoma, Sarcoma, Myxoma, Myxosarcoma,                                                                        |
|     or Fibrous Histiocytoma                                                                                                     |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    4/50 (8%)    8/50 (16%)   4/50 (8%)   |3/50 (6%)    0/50 (0%)    1/50 (2%)    1/50 (2%)    |
|POLY-3 ADJUSTED (b)|     4.9%         9.0%         19.2%        9.3%        |7.0%         0.0%         2.2%         2.3%         |
|TERMINAL (d)       |     1/27 (4%)    2/29 (7%)    7/29 (24%)   1/26 (4%)   |3/34 (9%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     672          686          665          671         |735 (T)      ---          716          726          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.401      P=0.395      P=0.058      P=0.362     |P=0.427N     P=0.137N     P=0.287N     P=0.304N     |
|POLY 3             |     P=0.449      P=0.378      P=0.047 *    P=0.362     |P=0.438N     P=0.120N     P=0.289N     P=0.303N     |
|POLY 1.5           |     P=0.448      P=0.363      P=0.048 *    P=0.356     |P=0.437N     P=0.121N     P=0.295N     P=0.303N     |
|POLY 6             |     P=0.446      P=0.394      P=0.047 *    P=0.366     |P=0.440N     P=0.119N     P=0.282N     P=0.303N     |
|LOGISTIC REGRESSION|     P=0.430      P=0.385      P=0.051      P=0.357     |P=0.441N     (e)          P=0.279N     P=0.302N     |
|COCH-ARM / FISHERS |     P=0.429      P=0.339      P=0.046 *    P=0.339     |P=0.442N     P=0.121N     P=0.309N     P=0.309N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Fibrosarcoma                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    2/50 (4%)    1/50 (2%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     2.5%         4.5%         2.4%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    1/29 (3%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      686          733 (T)      671         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.549N     P=0.543      P=0.746N     P=0.752N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.524N     P=0.532      P=0.755N     P=0.749N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.526N     P=0.520      P=0.756N     P=0.752N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.524N     P=0.546      P=0.754N     P=0.747N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.532N     P=0.535      P=0.746N     P=0.753N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.535N     P=0.500      P=0.753N     P=0.753N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 17
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Fibrosarcoma, Sarcoma, Myxosarcoma, or Fibrous Histiocytoma                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    2/50 (4%)    1/50 (2%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    1/50 (2%)    |
|POLY-3 ADJUSTED (b)|     2.5%         4.5%         2.4%         2.3%        |0.0%         0.0%         0.0%         2.3%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    1/29 (3%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      686          733 (T)      671         |---          ---          ---          726          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.549N     P=0.543      P=0.746N     P=0.752N    |P=0.224      (e)          (e)          P=0.506      |
|POLY 3             |     P=0.524N     P=0.532      P=0.755N     P=0.749N    |P=0.216      (e)          (e)          P=0.501      |
|POLY 1.5           |     P=0.526N     P=0.520      P=0.756N     P=0.752N    |P=0.216      (e)          (e)          P=0.501      |
|POLY 6             |     P=0.524N     P=0.546      P=0.754N     P=0.747N    |P=0.215      (e)          (e)          P=0.501      |
|LOGISTIC REGRESSION|     P=0.532N     P=0.535      P=0.746N     P=0.753N    |P=0.212      (e)          (e)          P=0.500      |
|COCH-ARM / FISHERS |     P=0.535N     P=0.500      P=0.753N     P=0.753N    |P=0.214      (e)          (e)          P=0.500      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Keratoacanthoma                                                                                                             |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    4/50 (8%)    5/50 (10%)   2/50 (4%)   |0/50 (0%)    0/50 (0%)    2/50 (4%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     5.0%         9.0%         12.1%        4.7%        |0.0%         0.0%         4.5%         0.0%         |
|TERMINAL (d)       |     2/27 (7%)    3/29 (10%)   5/29 (17%)   2/26 (8%)   |0/34 (0%)    0/31 (0%)    2/36 (6%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      576          733 (T)      733 (T)     |---          ---          735 (T)      ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.462N     P=0.375      P=0.242      P=0.683     |P=0.690N     (e)          P=0.251      (e)          |
|POLY 3             |     P=0.412N     P=0.383      P=0.225      P=0.677N    |P=0.695N     (e)          P=0.247      (e)          |
|POLY 1.5           |     P=0.412N     P=0.366      P=0.224      P=0.680N    |P=0.694N     (e)          P=0.243      (e)          |
|POLY 6             |     P=0.418N     P=0.402      P=0.227      P=0.675N    |P=0.696N     (e)          P=0.251      (e)          |
|LOGISTIC REGRESSION|     P=0.427N     P=0.376      P=0.242      P=0.683     |(e)          (e)          P=0.251      (e)          |
|COCH-ARM / FISHERS |     P=0.425N     P=0.339      P=0.218      P=0.691N    |P=0.697N     (e)          P=0.247      (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 18
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Lipoma                                                                                                                      |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/50 (2%)    1/50 (2%)    2/50 (4%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     2.5%         2.3%         4.8%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    1/29 (3%)    1/29 (3%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      733 (T)      698          547         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.643      P=0.746N     P=0.520      P=0.760N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.631N     P=0.741N     P=0.510      P=0.747N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.631N     P=0.748N     P=0.508      P=0.750N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.632N     P=0.734N     P=0.514      P=0.744N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.638N     P=0.746N     P=0.514      P=0.744     |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.640N     P=0.753N     P=0.500      P=0.753N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Squamous Cell Papilloma, Papilloma, Squamous Cell                                                                           |
|     Carcinoma or Keratoacanthoma                                                                                                |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    4/50 (8%)    5/50 (10%)   3/50 (6%)   |1/50 (2%)    0/50 (0%)    2/50 (4%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     5.0%         9.0%         12.1%        7.0%        |2.3%         0.0%         4.5%         0.0%         |
|TERMINAL (d)       |     2/27 (7%)    3/29 (10%)   5/29 (17%)   2/26 (8%)   |0/34 (0%)    0/31 (0%)    2/36 (6%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      576          733 (T)      560         |566          ---          735 (T)      ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.544      P=0.375      P=0.242      P=0.493     |P=0.445N     P=0.505N     P=0.521      P=0.491N     |
|POLY 3             |     P=0.587N     P=0.383      P=0.225      P=0.528     |P=0.452N     P=0.505N     P=0.511      P=0.501N     |
|POLY 1.5           |     P=0.590N     P=0.366      P=0.224      P=0.521     |P=0.451N     P=0.504N     P=0.507      P=0.500N     |
|POLY 6             |     P=0.589N     P=0.402      P=0.227      P=0.534     |P=0.455N     P=0.506N     P=0.515      P=0.503N     |
|LOGISTIC REGRESSION|     P=0.585      P=0.376      P=0.242      P=0.519     |P=0.456N     P=0.476N     P=0.495      P=0.514N     |
|COCH-ARM / FISHERS |     P=0.580      P=0.339      P=0.218      P=0.500     |P=0.455N     P=0.500N     P=0.500      P=0.500N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 19
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Squamous Cell Papilloma, Papilloma, or Keratoacanthoma                                                                      |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    4/50 (8%)    5/50 (10%)   3/50 (6%)   |0/50 (0%)    0/50 (0%)    2/50 (4%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     5.0%         9.0%         12.1%        7.0%        |0.0%         0.0%         4.5%         0.0%         |
|TERMINAL (d)       |     2/27 (7%)    3/29 (10%)   5/29 (17%)   2/26 (8%)   |0/34 (0%)    0/31 (0%)    2/36 (6%)    0/34 (0%)    |
|FIRST INCIDENCE    |     733 (T)      576          733 (T)      560         |---          ---          735 (T)      ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.544      P=0.375      P=0.242      P=0.493     |P=0.690N     (e)          P=0.251      (e)          |
|POLY 3             |     P=0.587N     P=0.383      P=0.225      P=0.528     |P=0.695N     (e)          P=0.247      (e)          |
|POLY 1.5           |     P=0.590N     P=0.366      P=0.224      P=0.521     |P=0.694N     (e)          P=0.243      (e)          |
|POLY 6             |     P=0.589N     P=0.402      P=0.227      P=0.534     |P=0.696N     (e)          P=0.251      (e)          |
|LOGISTIC REGRESSION|     P=0.585      P=0.376      P=0.242      P=0.519     |(e)          (e)          P=0.251      (e)          |
|COCH-ARM / FISHERS |     P=0.580      P=0.339      P=0.218      P=0.500     |P=0.697N     (e)          P=0.247      (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Testes                                                                                                                           |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     40/50 (80%)  35/50 (70%)  41/50 (82%)  33/50 (66%) |                                                    |
|POLY-3 ADJUSTED (b)|     86.1%        76.4%        91.3%        73.9%       |                                                    |
|TERMINAL (d)       |     24/27 (89%)  26/29 (90%)  29/29 (100%) 23/26 (89%) |                                                    |
|FIRST INCIDENCE    |     408          586          552          532         |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.272N     P=0.091N     P=0.474N     P=0.154N    |                                                    |
|POLY 3             |     P=0.121N     P=0.157N     P=0.301      P=0.092N    |                                                    |
|POLY 1.5           |     P=0.099N     P=0.152N     P=0.405      P=0.075N    |                                                    |
|POLY 6             |     P=0.190N     P=0.177N     P=0.206      P=0.146N    |                                                    |
|LOGISTIC REGRESSION|     P=0.063N     P=0.056N     P=0.591      P=0.030N*   |                                                    |
|COCH-ARM / FISHERS |     P=0.114N     P=0.178N     P=0.500      P=0.088N    |                                                    |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 20
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Adenoma                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     5/49 (10%)   8/49 (16%)   4/48 (8%)    9/48 (19%)  |6/47 (13%)   6/47 (13%)   6/50 (12%)   2/47 (4%)    |
|POLY-3 ADJUSTED (b)|     12.6%        18.3%        9.9%         21.5%       |14.6%        15.0%        13.3%        4.9%         |
|TERMINAL (d)       |     4/27 (15%)   6/28 (21%)   4/29 (14%)   6/26 (23%)  |6/34 (18%)   4/31 (13%)   3/36 (8%)    2/33 (6%)    |
|FIRST INCIDENCE    |     697          635          733 (T)      525         |735 (T)      686          672          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.184      P=0.319      P=0.460N     P=0.192     |P=0.089N     P=0.569      P=0.568N     P=0.141N     |
|POLY 3             |     P=0.219      P=0.336      P=0.489N     P=0.218     |P=0.083N     P=0.602      P=0.556N     P=0.132N     |
|POLY 1.5           |     P=0.215      P=0.314      P=0.496N     P=0.208     |P=0.081N     P=0.601      P=0.564N     P=0.130N     |
|POLY 6             |     P=0.220      P=0.361      P=0.483N     P=0.227     |P=0.086N     P=0.607      P=0.541N     P=0.134N     |
|LOGISTIC REGRESSION|     P=0.201      P=0.347      P=0.472N     P=0.206     |P=0.084N     P=0.599      P=0.563N     P=0.141N     |
|COCH-ARM / FISHERS |     P=0.198      P=0.276      P=0.513N     P=0.182     |P=0.087N     P=0.621N     P=0.576N     P=0.134N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Carcinoma                                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     1/49 (2%)    4/49 (8%)    3/48 (6%)    1/48 (2%)   |3/47 (6%)    2/47 (4%)    2/50 (4%)    1/47 (2%)    |
|POLY-3 ADJUSTED (b)|     2.5%         9.3%         7.4%         2.5%        |7.3%         5.0%         4.5%         2.4%         |
|TERMINAL (d)       |     0/27 (0%)    3/28 (11%)   3/29 (10%)   1/26 (4%)   |3/34 (9%)    2/31 (7%)    2/36 (6%)    1/33 (3%)    |
|FIRST INCIDENCE    |     672          702          733 (T)      733 (T)     |735 (T)      735 (T)      735 (T)      735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.353N     P=0.209      P=0.323      P=0.755N    |P=0.264N     P=0.542N     P=0.474N     P=0.315N     |
|POLY 3             |     P=0.326N     P=0.202      P=0.310      P=0.756N    |P=0.263N     P=0.516N     P=0.465N     P=0.305N     |
|POLY 1.5           |     P=0.328N     P=0.194      P=0.307      P=0.757N    |P=0.261N     P=0.515N     P=0.467N     P=0.303N     |
|POLY 6             |     P=0.329N     P=0.210      P=0.312      P=0.757N    |P=0.267N     P=0.516N     P=0.461N     P=0.309N     |
|LOGISTIC REGRESSION|     P=0.342N     P=0.210      P=0.317      P=0.758N    |P=0.264N     P=0.542N     P=0.474N     P=0.315N     |
|COCH-ARM / FISHERS |     P=0.342N     P=0.181      P=0.301      P=0.747     |P=0.268N     P=0.500N     P=0.470N     P=0.308N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 21
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Carcinoma or Adenoma                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     6/49 (12%)   11/49 (22%)  7/48 (15%)   10/48 (21%) |8/47 (17%)   8/47 (17%)   8/50 (16%)   3/47 (6%)    |
|POLY-3 ADJUSTED (b)|     15.0%        25.1%        17.3%        23.9%       |19.4%        20.0%        17.7%        7.3%         |
|TERMINAL (d)       |     4/27 (15%)   8/28 (29%)   7/29 (24%)   7/26 (27%)  |8/34 (24%)   6/31 (19%)   5/36 (14%)   3/33 (9%)    |
|FIRST INCIDENCE    |     672          635          733 (T)      525         |735 (T)      686          672          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.288      P=0.187      P=0.545      P=0.208     |P=0.062N     P=0.542      P=0.548N     P=0.105N     |
|POLY 3             |     P=0.343      P=0.188      P=0.509      P=0.230     |P=0.057N     P=0.585      P=0.530N     P=0.096N     |
|POLY 1.5           |     P=0.337      P=0.171      P=0.503      P=0.221     |P=0.056N     P=0.584      P=0.540N     P=0.095N     |
|POLY 6             |     P=0.343      P=0.206      P=0.512      P=0.236     |P=0.060N     P=0.591      P=0.513N     P=0.098N     |
|LOGISTIC REGRESSION|     P=0.312      P=0.199      P=0.534      P=0.221     |P=0.059N     P=0.582      P=0.535N     P=0.105N     |
|COCH-ARM / FISHERS |     P=0.309      P=0.143      P=0.484      P=0.194     |P=0.062N     P=0.608N     P=0.554N     P=0.099N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus                                                                                                                           |
|     Polyp Stromal                                                                                                               |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |10/50 (20%)  4/50 (8%)    10/50 (20%)  10/50 (20%)  |
|POLY-3 ADJUSTED (b)|                                                        |23.5%        9.5%         22.5%        22.6%        |
|TERMINAL (d)       |                                                        |10/34 (29%)  3/31 (10%)   10/36 (28%)  7/34 (21%)   |
|FIRST INCIDENCE    |                                                        |735 (T)      728          735 (T)      535          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |P=0.305      P=0.099N     P=0.545N     P=0.597N     |
|POLY 3             |                                                        |P=0.315      P=0.073N     P=0.557N     P=0.563N     |
|POLY 1.5           |                                                        |P=0.305      P=0.075N     P=0.572N     P=0.576N     |
|POLY 6             |                                                        |P=0.327      P=0.070N     P=0.539N     P=0.547N     |
|LOGISTIC REGRESSION|                                                        |P=0.278      P=0.083N     P=0.545N     P=0.595N     |
|COCH-ARM / FISHERS |                                                        |P=0.278      P=0.074N     P=0.598N     P=0.598N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 22
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus                                                                                                                           |
|     Sarcoma Stromal or Polyp Stromal                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |10/50 (20%)  5/50 (10%)   10/50 (20%)  10/50 (20%)  |
|POLY-3 ADJUSTED (b)|                                                        |23.5%        11.8%        22.5%        22.6%        |
|TERMINAL (d)       |                                                        |10/34 (29%)  3/31 (10%)   10/36 (28%)  7/34 (21%)   |
|FIRST INCIDENCE    |                                                        |735 (T)      695          735 (T)      535          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |P=0.352      P=0.170N     P=0.545N     P=0.597N     |
|POLY 3             |                                                        |P=0.362      P=0.129N     P=0.557N     P=0.563N     |
|POLY 1.5           |                                                        |P=0.352      P=0.134N     P=0.572N     P=0.576N     |
|POLY 6             |                                                        |P=0.373      P=0.124N     P=0.539N     P=0.547N     |
|LOGISTIC REGRESSION|                                                        |P=0.325      P=0.130N     P=0.545N     P=0.595N     |
|COCH-ARM / FISHERS |                                                        |P=0.324      P=0.131N     P=0.598N     P=0.598N     |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Histiocytic Sarcoma                                                                                                         |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     0/50 (0%)    3/50 (6%)    0/50 (0%)    0/50 (0%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    1/50 (2%)    |
|POLY-3 ADJUSTED (b)|     0.0%         6.6%         0.0%         0.0%        |0.0%         0.0%         0.0%         2.3%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    1/34 (3%)    |
|FIRST INCIDENCE    |     ---          285          ---          ---         |---          ---          ---          735 (T)      |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.256N     P=0.154      (e)          (e)         |P=0.218      (e)          (e)          P=0.500      |
|POLY 3             |     P=0.227N     P=0.141      (e)          (e)         |P=0.216      (e)          (e)          P=0.501      |
|POLY 1.5           |     P=0.234N     P=0.133      (e)          (e)         |P=0.216      (e)          (e)          P=0.501      |
|POLY 6             |     P=0.220N     P=0.150      (e)          (e)         |P=0.215      (e)          (e)          P=0.500      |
|LOGISTIC REGRESSION|     P=0.337N     P=0.055      (e)          (e)         |(e)          (e)          (e)          P=0.500      |
|COCH-ARM / FISHERS |     P=0.255N     P=0.121      (e)          (e)         |P=0.214      (e)          (e)          P=0.500      |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 23
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Leukemia: Lymphocytic, Monocytic, Mononuclear, or                                                                           |
|     Undifferentiated                                                                                                            |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     16/50 (32%)  23/50 (46%)  29/50 (58%)  25/50 (50%) |14/50 (28%)  21/50 (42%)  14/50 (28%)  24/50 (48%)  |
|POLY-3 ADJUSTED (b)|     37.0%        49.6%        61.6%        55.8%       |31.6%        46.3%        30.7%        51.0%        |
|TERMINAL (d)       |     9/27 (33%)   14/29 (48%)  14/29 (48%)  14/26 (54%) |10/34 (29%)  11/31 (36%)  9/36 (25%)   14/34 (41%)  |
|FIRST INCIDENCE    |     135          586          403          532         |504          428          595          411          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.118      P=0.228      P=0.035 *    P=0.080     |P=0.090      P=0.092      P=0.513N     P=0.051      |
|POLY 3             |     P=0.103      P=0.157      P=0.013 *    P=0.053     |P=0.072      P=0.110      P=0.555N     P=0.044 *    |
|POLY 1.5           |     P=0.109      P=0.131      P=0.009 **   P=0.052     |P=0.064      P=0.102      P=0.567N     P=0.038 *    |
|POLY 6             |     P=0.094      P=0.196      P=0.024 *    P=0.054     |P=0.083      P=0.121      P=0.536N     P=0.054      |
|LOGISTIC REGRESSION|     P=0.120      P=0.117      P=0.007 **   P=0.061     |P=0.055      P=0.099      P=0.561N     P=0.032 *    |
|COCH-ARM / FISHERS |     P=0.114      P=0.109      P=0.008 **   P=0.052     |P=0.054      P=0.104      P=0.588N     P=0.032 *    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Mesothelioma: Benign, Malignant, NOS                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    0/50 (0%)    1/50 (2%)    0/50 (0%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     4.9%         0.0%         2.4%         0.0%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     714          ---          656          ---         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.272N     P=0.218N     P=0.481N     P=0.240N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.282N     P=0.218N     P=0.489N     P=0.226N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.277N     P=0.225N     P=0.492N     P=0.229N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.288N     P=0.212N     P=0.485N     P=0.225N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.269N     P=0.208N     P=0.491N     P=0.226N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.271N     P=0.247N     P=0.500N     P=0.247N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 24
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Mesothelioma: Malignant                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     2/50 (4%)    0/50 (0%)    1/50 (2%)    0/50 (0%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     4.9%         0.0%         2.4%         0.0%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     1/27 (4%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     714          ---          656          ---         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.272N     P=0.218N     P=0.481N     P=0.240N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.282N     P=0.218N     P=0.489N     P=0.226N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.277N     P=0.225N     P=0.492N     P=0.229N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.288N     P=0.212N     P=0.485N     P=0.225N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.269N     P=0.208N     P=0.491N     P=0.226N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.271N     P=0.247N     P=0.500N     P=0.247N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Osteosarcoma                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    0/50 (0%)    1/50 (2%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     7.2%         0.0%         2.4%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     408          ---          435          671         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.434N     P=0.109N     P=0.296N     P=0.284N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.453N     P=0.110N     P=0.302N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.448N     P=0.113N     P=0.301N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.460N     P=0.107N     P=0.303N     P=0.301N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.573N     P=0.169N     P=0.398N     P=0.407N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.442N     P=0.121N     P=0.309N     P=0.309N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 25
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Osteosarcoma or Osteoma                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     3/50 (6%)    0/50 (0%)    2/50 (4%)    1/50 (2%)   |0/50 (0%)    0/50 (0%)    0/50 (0%)    0/50 (0%)    |
|POLY-3 ADJUSTED (b)|     7.2%         0.0%         4.7%         2.3%        |0.0%         0.0%         0.0%         0.0%         |
|TERMINAL (d)       |     0/27 (0%)    0/29 (0%)    0/29 (0%)    0/26 (0%)   |0/34 (0%)    0/31 (0%)    0/36 (0%)    0/34 (0%)    |
|FIRST INCIDENCE    |     408          ---          435          671         |---          ---          ---          ---          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.428N     P=0.109N     P=0.487N     P=0.284N    |(e)          (e)          (e)          (e)          |
|POLY 3             |     P=0.447N     P=0.110N     P=0.494N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 1.5           |     P=0.441N     P=0.113N     P=0.494N     P=0.298N    |(e)          (e)          (e)          (e)          |
|POLY 6             |     P=0.455N     P=0.107N     P=0.494N     P=0.301N    |(e)          (e)          (e)          (e)          |
|LOGISTIC REGRESSION|     P=0.550N     P=0.169N     P=0.596N     P=0.407N    |(e)          (e)          (e)          (e)          |
|COCH-ARM / FISHERS |     P=0.437N     P=0.121N     P=0.500N     P=0.309N    |(e)          (e)          (e)          (e)          |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Benign Tumors                                                                                                               |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     47/50 (94%)  48/50 (96%)  48/50 (96%)  48/50 (96%) |44/50 (88%)  39/50 (78%)  44/50 (88%)  40/50 (80%)  |
|POLY-3 ADJUSTED (b)|     97.0%        97.9%        99.1%        98.0%       |92.4%        86.7%        90.6%        86.5%        |
|TERMINAL (d)       |     26/27 (96%)  29/29 (100%) 29/29 (100%) 26/26 (100%)|32/34 (94%)  28/31 (90%)  32/36 (89%)  31/34 (91%)  |
|FIRST INCIDENCE    |     408          526          435          525         |397          551          436          535          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.365      P=0.341N     P=0.462N     P=0.521     |P=0.290N     P=0.411N     P=0.381N     P=0.280N     |
|POLY 3             |     P=0.603      P=0.654      P=0.494      P=0.657     |P=0.313N     P=0.275N     P=0.521N     P=0.261N     |
|POLY 1.5           |     P=0.633      P=0.620      P=0.550      P=0.659     |P=0.285N     P=0.234N     P=0.556N     P=0.225N     |
|POLY 6             |     P=0.483      P=0.702      P=0.465      P=0.607     |P=0.354N     P=0.314N     P=0.468N     P=0.306N     |
|LOGISTIC REGRESSION|     P=0.501N     P=0.685N     P=0.652      P=0.628N    |P=0.243N     P=0.151N     P=0.548N     P=0.157N     |
|COCH-ARM / FISHERS |     P=0.491      P=0.500      P=0.500      P=0.500     |P=0.323N     P=0.143N     P=0.620N     P=0.207N     |
|=================================================================================================================================|
       Date:  10/28/99                           EXPERIMENT: 88124 TEST: 03                                            Page 26
                     Statistical Analysis of Primary Tumors in Rats(FISCHER 344)       -                  INDIUM PHOSPHIDE
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant Tumors                                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     26/50 (52%)  37/50 (74%)  42/50 (84%)  37/50 (74%) |25/50 (50%)  30/50 (60%)  24/50 (48%)  32/50 (64%)  |
|POLY-3 ADJUSTED (b)|     56.0%        76.6%        85.6%        78.5%       |54.0%        64.6%        51.1%        68.0%        |
|TERMINAL (d)       |     11/27 (41%)  19/29 (66%)  23/29 (79%)  19/26 (73%) |17/34 (50%)  16/31 (52%)  17/36 (47%)  21/34 (62%)  |
|FIRST INCIDENCE    |     135          285          403          532         |476          428          225          411          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.128      P=0.161      P=0.028 *    P=0.079     |P=0.230      P=0.183      P=0.403N     P=0.160      |
|POLY 3             |     P=0.059      P=0.024 *    P<0.001 **   P=0.014 *   |P=0.153      P=0.203      P=0.467N     P=0.117      |
|POLY 1.5           |     P=0.065      P=0.020 *    P<0.001 **   P=0.015 *   |P=0.155      P=0.192      P=0.468N     P=0.115      |
|POLY 6             |     P=0.053      P=0.031 *    P<0.001 **   P=0.013 *   |P=0.153      P=0.220      P=0.465N     P=0.121      |
|LOGISTIC REGRESSION|     P=0.080      P=0.014 *    P<0.001 **   P=0.018 *   |P=0.151      P=0.197      P=0.492N     P=0.115      |
|COCH-ARM / FISHERS |     P=0.082      P=0.019 *    P<0.001 **   P=0.019 *   |P=0.146      P=0.211      P=0.500N     P=0.113      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |     CONTROL      0.03         0.1MG/M3     0.3MG/M3    |CONTROL      0.03         0.1MG/M3     0.3MG/M3     |
|                   |                  MG/M3         STOP         STOP       |             MG/M3         STOP         STOP        |
|=================================================================================================================================|
|                                                                                                                                 |
|All Organs                                                                                                                       |
|     Malignant and Benign Tumors                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |     #            #            #            #           |#            #            #            #            |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |     49/50 (98%)  50/50 (100%) 50/50 (100%) 50/50 (100%)|49/50 (98%)  47/50 (94%)  48/50 (96%)  46/50 (92%)  |
|POLY-3 ADJUSTED (b)|     99.1%        100.0%       100.0%       100.0%      |100.0%       97.9%        96.0%        94.8%        |
|TERMINAL (d)       |     27/27 (100%) 29/29 (100%) 29/29 (100%) 26/26 (100%)|34/34 (100%) 30/31 (97%)  34/36 (94%)  32/34 (94%)  |
|FIRST INCIDENCE    |     135          285          403          525         |397          428          225          411          |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |     P=0.371      P=0.339N     P=0.460N     P=0.523     |P=0.286N     P=0.498      P=0.303N     P=0.364N     |
|POLY 3             |     P=0.864      P=0.910      P=0.910      P=0.910     |P=0.133N     P=0.496N     P=0.243N     P=0.150N     |
|POLY 1.5           |     P=0.654      P=0.702      P=0.702      P=0.702     |P=0.105N     P=0.494N     P=0.258N     P=0.127N     |
|POLY 6             |     P=1.000      P=1.000      P=1.000      P=1.000     |P=0.173N     P=0.496N     P=0.242N     P=0.184N     |
|LOGISTIC REGRESSION|     P=0.540      P=0.571      P=0.553      P=0.594     |P=0.102N     P=0.462N     P=0.433N     P=0.119N     |
|COCH-ARM / FISHERS |     P=0.474      P=0.500      P=0.500      P=0.500     |P=0.191N     P=0.309N     P=0.500N     P=0.181N     |
|=================================================================================================================================|
(a)  Number of tumor-bearing animals /  number of animals examined at site.
(b)  Poly-3 adjusted lifetime tumor incidence.
(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.
(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).
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