National Toxicology Program

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TDMS Study 89029-05 Pathology Tables

NTP                                    STATISTICAL ANALYSIS OF NON-NEOPLASTIC LESIONS                          REPORT: PEIRPT10
LAB: I. I. T. Research Inst                               MAGNETIC FIELDS (EMF)                                DATE: 01/28/98

EXPERIMENT: 89029 TEST: 05                                                                                     TIME: 10:45:12
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                   PAGE:
CONT: NO1-ES-25351                              ROUTE: MAGNETIC FIELDS                                         NTP C#: C89029
PATHOLOGIST: KOVATCH, R.                                                                                       CAS: ELECTROMAG
NTP                                    STATISTICAL ANALYSIS OF NON-NEOPLASTIC LESIONS                          REPORT: PEIRPT10   
LAB: I. I. T. Research Inst                               MAGNETIC FIELDS (EMF)                                DATE: 01/28/98     
EXPERIMENT: 89029 TEST: 05                                                                                     TIME: 10:45:12     
TEST TYPE:  CHRONIC                             CAGES FROM 0000 TO LAST CAGE                                   PAGE:              
CONT: NO1-ES-25351                              ROUTE: MAGNETIC FIELDS                                         NTP C#: C89029     
PATHOLOGIST: KOVATCH, R.                                                                                       CAS: ELECTROMAG    



SUMMARY OF STATISTICALLY SIGNIFICANT (P<=.05) RESULTS
IN THE ANALYSIS OF               MAGNETIC FIELDS (EMF)
===============================================================

Male Rats
------------
Organ                                 Morphology
-----                                 ----------
Harderian Gland                        Infiltration Cellular Lymphocyte
Islets, Pancreatic                     Hyperplasia Focal
Liver                                  Infiltration Cellular Mixed Cell
                                       Necrosis
Lymph Node, Mesenteric                 Infiltration Cellular Histiocyte
Mammary Gland                          Galactocele
Prostate                               Inflammation Acute
Stomach, Forestomach                   Ulcer
Testes: Interstitial Cell              Hyperplasia Focal
Thymus                                 Atrophy
Tooth                                  Malformation
===============================================================
Female Rats
------------
Organ                                  Morphology
-----                                  ----------
Kidney                                 Mineralization
Kidney: Renal Tubule                   Accumulation, Hyaline Droplet
                                       Pigmentation
Liver                                  Basophilic Focus
                                       Clear Cell Focus
                                       Eosinophilic Focus
Nose: Nasolacrimal Duct                Inflammation Chronic
Pineal Gland                           Mineralization
Spleen                                 Hematopoietic Cell Proliferation
Thyroid Gland: C-Cell                  Hyperplasia
===============================================================
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 1

Statistical Analysis of Non-neoplastic Lesions in        Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Accessory Adrenal Cortical Nodule                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                3/100 (3%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     3.6%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                3/59 (5%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  649                      736 (T)      |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.308      |                                    (e)             |
|POLY 3             |                                           P=0.301      |                                    (e)             |
|POLY 1.5           |                                           P=0.304      |                                    (e)             |
|POLY 6             |                                           P=0.299      |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.300      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.314      |                                    (e)             |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Angiectasis                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  5/99 (5%)                2/100 (2%)   |           58/100 (58%)             62/100 (62%)    |
|POLY-3 ADJUSTED (b)|                  5.8%                     2.4%         |           65.8%                    71.8%           |
|TERMINAL (d)       |                  4/57 (7%)                2/59 (3%)    |           45/59 (76%)              50/58 (86%)     |
|FIRST INCIDENCE    |                  670                      736 (T)      |           613                      624             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.210N     |                                    P=0.280         |
|POLY 3             |                                           P=0.231N     |                                    P=0.229         |
|POLY 1.5           |                                           P=0.226N     |                                    P=0.260         |
|POLY 6             |                                           P=0.233N     |                                    P=0.221         |
|LOGISTIC REGRESSION|                                           P=0.222N     |                                    P=0.240         |
|COCH-ARM / FISHERS |                                           P=0.218N     |                                    P=0.333         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 2

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Hematopoietic Cell Proliferation                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/99 (3%)                9/100 (9%)   |           2/100 (2%)               4/100 (4%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     10.7%        |           2.3%                     4.8%            |
|TERMINAL (d)       |                  1/57 (2%)                7/59 (12%)   |           1/59 (2%)                3/58 (5%)       |
|FIRST INCIDENCE    |                  674                      707          |           673                      632             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.079      |                                    P=0.332         |
|POLY 3             |                                           P=0.061      |                                    P=0.332         |
|POLY 1.5           |                                           P=0.064      |                                    P=0.334         |
|POLY 6             |                                           P=0.060      |                                    P=0.333         |
|LOGISTIC REGRESSION|                                           P=0.063      |                                    P=0.331         |
|COCH-ARM / FISHERS |                                           P=0.069      |                                    P=0.341         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  12/99 (12%)              9/100 (9%)   |           11/100 (11%)             16/100 (16%)    |
|POLY-3 ADJUSTED (b)|                  13.8%                    10.7%        |           12.7%                    19.1%           |
|TERMINAL (d)       |                  8/57 (14%)               8/59 (14%)   |           6/59 (10%)               14/58 (24%)     |
|FIRST INCIDENCE    |                  573                      621          |           494                      713             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.313N     |                                    P=0.194         |
|POLY 3             |                                           P=0.349N     |                                    P=0.172         |
|POLY 1.5           |                                           P=0.336N     |                                    P=0.182         |
|POLY 6             |                                           P=0.359N     |                                    P=0.165         |
|LOGISTIC REGRESSION|                                           P=0.338N     |                                    P=0.187         |
|COCH-ARM / FISHERS |                                           P=0.314N     |                                    P=0.204         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 3

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Hypertrophy Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/99 (3%)                0/100 (0%)   |           3/100 (3%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     0.0%         |           3.5%                     1.2%            |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  659                      ---          |           674                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.122N     |                                    P=0.312N        |
|POLY 3             |                                           P=0.127N     |                                    P=0.317N        |
|POLY 1.5           |                                           P=0.124N     |                                    P=0.315N        |
|POLY 6             |                                           P=0.128N     |                                    P=0.317N        |
|LOGISTIC REGRESSION|                                           P=0.125N     |                                    P=0.312N        |
|COCH-ARM / FISHERS |                                           P=0.121N     |                                    P=0.311N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                2/100 (2%)   |           2/100 (2%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     2.4%         |           2.3%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  647                      470          |           655                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.488      |                                    P=0.249N        |
|POLY 3             |                                           P=0.497      |                                    P=0.247N        |
|POLY 1.5           |                                           P=0.499      |                                    P=0.244N        |
|POLY 6             |                                           P=0.497      |                                    P=0.246N        |
|LOGISTIC REGRESSION|                                           P=0.548      |                                    P=0.241N        |
|COCH-ARM / FISHERS |                                           P=0.504      |                                    P=0.249N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 4

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Vacuolization Cytoplasmic Diffuse                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                3/100 (3%)   |           0/100 (0%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     3.5%         |           0.0%                     1.2%            |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      570          |           ---                      535             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.116      |                                    P=0.487         |
|POLY 3             |                                           P=0.120      |                                    P=0.500         |
|POLY 1.5           |                                           P=0.121      |                                    P=0.500         |
|POLY 6             |                                           P=0.121      |                                    P=0.500         |
|LOGISTIC REGRESSION|                                           P=0.139      |                                    P=0.628         |
|COCH-ARM / FISHERS |                                           P=0.125      |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Cortex                                                                                                                   |
|     Vacuolization Cytoplasmic Focal                                                                                             |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  20/99 (20%)              20/100 (20%) |           29/100 (29%)             27/100 (27%)    |
|POLY-3 ADJUSTED (b)|                  22.7%                    23.3%        |           33.0%                    32.0%           |
|TERMINAL (d)       |                  13/57 (23%)              13/59 (22%)  |           19/59 (32%)              22/58 (38%)     |
|FIRST INCIDENCE    |                  303                      489          |           613                      641             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.543N     |                                    P=0.461N        |
|POLY 3             |                                           P=0.537      |                                    P=0.510N        |
|POLY 1.5           |                                           P=0.552      |                                    P=0.484N        |
|POLY 6             |                                           P=0.531      |                                    P=0.535N        |
|LOGISTIC REGRESSION|                                           P=0.566      |                                    P=0.466N        |
|COCH-ARM / FISHERS |                                           P=0.556N     |                                    P=0.437N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 5

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Adrenal Medulla                                                                                                                  |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  17/98 (17%)              14/95 (15%)  |           6/96 (6%)                5/97 (5%)       |
|POLY-3 ADJUSTED (b)|                  19.6%                    17.4%        |           7.2%                     6.0%            |
|TERMINAL (d)       |                  10/57 (18%)              10/56 (18%)  |           1/56 (2%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  614                      558          |           610                      448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.376N     |                                    P=0.502N        |
|POLY 3             |                                           P=0.431N     |                                    P=0.504N        |
|POLY 1.5           |                                           P=0.414N     |                                    P=0.502N        |
|POLY 6             |                                           P=0.445N     |                                    P=0.503N        |
|LOGISTIC REGRESSION|                                           P=0.414N     |                                    P=0.480N        |
|COCH-ARM / FISHERS |                                           P=0.383N     |                                    P=0.493N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone Marrow                                                                                                                      |
|     Depletion Cellular                                                                                                          |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               6/100 (6%)   |           9/100 (9%)               11/100 (11%)    |
|POLY-3 ADJUSTED (b)|                  3.5%                     6.9%         |           10.2%                    12.6%           |
|TERMINAL (d)       |                  1/57 (2%)                2/59 (3%)    |           2/59 (3%)                5/58 (9%)       |
|FIRST INCIDENCE    |                  583                      306          |           494                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.247      |                                    P=0.391         |
|POLY 3             |                                           P=0.248      |                                    P=0.400         |
|POLY 1.5           |                                           P=0.248      |                                    P=0.401         |
|POLY 6             |                                           P=0.250      |                                    P=0.403         |
|LOGISTIC REGRESSION|                                           P=0.303      |                                    P=0.519         |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    P=0.407         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 6

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone Marrow                                                                                                                      |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  14/100 (14%)             12/100 (12%) |           13/100 (13%)             17/100 (17%)    |
|POLY-3 ADJUSTED (b)|                  16.0%                    13.8%        |           14.8%                    19.4%           |
|TERMINAL (d)       |                  6/57 (11%)               4/59 (7%)    |           7/59 (12%)               8/58 (14%)      |
|FIRST INCIDENCE    |                  502                      558          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.425N     |                                    P=0.270         |
|POLY 3             |                                           P=0.425N     |                                    P=0.271         |
|POLY 1.5           |                                           P=0.424N     |                                    P=0.270         |
|POLY 6             |                                           P=0.417N     |                                    P=0.281         |
|LOGISTIC REGRESSION|                                           P=0.402N     |                                    P=0.319         |
|COCH-ARM / FISHERS |                                           P=0.417N     |                                    P=0.277         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone: Cranium                                                                                                                    |
|     Hyperostosis                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               1/100 (1%)   |           7/100 (7%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     1.2%         |           8.2%                     2.4%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           6/59 (10%)               2/58 (3%)       |
|FIRST INCIDENCE    |                  736 (T)                  736 (T)      |           617                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.754N     |                                    P=0.089N        |
|POLY 3             |                                           P=0.758      |                                    P=0.091N        |
|POLY 1.5           |                                           P=0.759      |                                    P=0.090N        |
|POLY 6             |                                           P=0.758      |                                    P=0.091N        |
|LOGISTIC REGRESSION|                                           P=0.754N     |                                    P=0.088N        |
|COCH-ARM / FISHERS |                                           P=0.751N     |                                    P=0.085N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 7

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone: Femur                                                                                                                      |
|     Hyperostosis                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               1/100 (1%)   |           20/100 (20%)             13/100 (13%)    |
|POLY-3 ADJUSTED (b)|                  1.2%                     1.2%         |           23.0%                    15.4%           |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           13/59 (22%)              7/58 (12%)      |
|FIRST INCIDENCE    |                  649                      736 (T)      |           591                      645             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.754      |                                    P=0.144N        |
|POLY 3             |                                           P=0.758      |                                    P=0.144N        |
|POLY 1.5           |                                           P=0.759      |                                    P=0.139N        |
|POLY 6             |                                           P=0.757      |                                    P=0.145N        |
|LOGISTIC REGRESSION|                                           P=0.760      |                                    P=0.136N        |
|COCH-ARM / FISHERS |                                           P=0.751N     |                                    P=0.126N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Bone: Turbinate                                                                                                                  |
|     Hyperostosis                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               0/100 (0%)   |           7/100 (7%)               6/100 (6%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           8.1%                     7.2%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           4/59 (7%)                4/58 (7%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           591                      715             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.512N        |
|POLY 3             |                                           (e)          |                                    P=0.523N        |
|POLY 1.5           |                                           (e)          |                                    P=0.516N        |
|POLY 6             |                                           (e)          |                                    P=0.524N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.513N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.500N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 8

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Brain: Cerebellum                                                                                                                |
|     Hemorrhage                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               0/100 (0%)   |           0/100 (0%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           0.0%                     2.4%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           ---                      526             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.231         |
|POLY 3             |                                           (e)          |                                    P=0.237         |
|POLY 1.5           |                                           (e)          |                                    P=0.237         |
|POLY 6             |                                           (e)          |                                    P=0.237         |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.265         |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.249         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Brain: Hypothalamus                                                                                                              |
|     Compression                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  5/100 (5%)               8/100 (8%)   |           16/100 (16%)             19/100 (19%)    |
|POLY-3 ADJUSTED (b)|                  5.8%                     9.3%         |           18.2%                    21.7%           |
|TERMINAL (d)       |                  1/57 (2%)                3/59 (5%)    |           8/59 (14%)               8/58 (14%)      |
|FIRST INCIDENCE    |                  583                      470          |           543                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.274      |                                    P=0.342         |
|POLY 3             |                                           P=0.278      |                                    P=0.347         |
|POLY 1.5           |                                           P=0.279      |                                    P=0.345         |
|POLY 6             |                                           P=0.281      |                                    P=0.361         |
|LOGISTIC REGRESSION|                                           P=0.313      |                                    P=0.375         |
|COCH-ARM / FISHERS |                                           P=0.284      |                                    P=0.355         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 9

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral Gland                                                                                                                   |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           1/90 (1%)                3/94 (3%)       |
|POLY-3 ADJUSTED (b)|                                                        |           1.3%                     3.8%            |
|TERMINAL (d)       |                                                        |           1/56 (2%)                2/56 (4%)       |
|FIRST INCIDENCE    |                                                        |           737 (T)                  718             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.307         |
|POLY 3             |                                                        |                                    P=0.317         |
|POLY 1.5           |                                                        |                                    P=0.317         |
|POLY 6             |                                                        |                                    P=0.319         |
|LOGISTIC REGRESSION|                                                        |                                    P=0.325         |
|COCH-ARM / FISHERS |                                                        |                                    P=0.327         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral Gland                                                                                                                   |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           6/90 (7%)                5/94 (5%)       |
|POLY-3 ADJUSTED (b)|                                                        |           7.8%                     6.3%            |
|TERMINAL (d)       |                                                        |           5/56 (9%)                3/56 (5%)       |
|FIRST INCIDENCE    |                                                        |           673                      729             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.503N        |
|POLY 3             |                                                        |                                    P=0.474N        |
|POLY 1.5           |                                                        |                                    P=0.474N        |
|POLY 6             |                                                        |                                    P=0.470N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.464N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.470N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 10

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Clitoral Gland                                                                                                                   |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           25/90 (28%)              20/94 (21%)     |
|POLY-3 ADJUSTED (b)|                                                        |           32.1%                    24.3%           |
|TERMINAL (d)       |                                                        |           21/56 (38%)              13/56 (23%)     |
|FIRST INCIDENCE    |                                                        |           591                      526             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.254N        |
|POLY 3             |                                                        |                                    P=0.175N        |
|POLY 1.5           |                                                        |                                    P=0.187N        |
|POLY 6             |                                                        |                                    P=0.155N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.197N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.197N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Epididymis                                                                                                                       |
|     Granuloma Sperm                                                                                                             |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               0/100 (0%)   |                                                    |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |                                                    |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |                                                    |
|FIRST INCIDENCE    |                  641                      ---          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.247N     |                                                    |
|POLY 3             |                                           P=0.247N     |                                                    |
|POLY 1.5           |                                           P=0.244N     |                                                    |
|POLY 6             |                                           P=0.249N     |                                                    |
|LOGISTIC REGRESSION|                                           P=0.239N     |                                                    |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 11

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Epididymis                                                                                                                       |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               3/100 (3%)   |                                                    |
|POLY-3 ADJUSTED (b)|                  2.3%                     3.6%         |                                                    |
|TERMINAL (d)       |                  1/57 (2%)                2/59 (3%)    |                                                    |
|FIRST INCIDENCE    |                  617                      561          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.493      |                                                    |
|POLY 3             |                                           P=0.492      |                                                    |
|POLY 1.5           |                                           P=0.495      |                                                    |
|POLY 6             |                                           P=0.492      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.506      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.500      |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Epididymis: Epithelium                                                                                                           |
|     Degeneration Mucoid                                                                                                         |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  82/100 (82%)             79/100 (79%) |                                                    |
|POLY-3 ADJUSTED (b)|                  87.1%                    85.3%        |                                                    |
|TERMINAL (d)       |                  49/57 (86%)              52/59 (88%)  |                                                    |
|FIRST INCIDENCE    |                  527                      552          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.360N     |                                                    |
|POLY 3             |                                           P=0.433N     |                                                    |
|POLY 1.5           |                                           P=0.398N     |                                                    |
|POLY 6             |                                           P=0.486N     |                                                    |
|LOGISTIC REGRESSION|                                           P=0.511N     |                                                    |
|COCH-ARM / FISHERS |                                           P=0.361N     |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 12

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Eye: Iris                                                                                                                        |
|     Synechia                                                                                                                    |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/0 (0%)                 1/1 (100%)   |           2/6 (33%)                0/3 (0%)        |
|POLY-3 ADJUSTED (b)|                  0.0%                     100.0%       |           41.7%                    0.0%            |
|TERMINAL (d)       |                  0/0 (0%)                 1/1 (100%)   |           2/3 (67%)                0/1 (0%)        |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           737 (T)                  ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.500N        |
|POLY 3             |                                           (e)          |                                    P=0.598N        |
|POLY 1.5           |                                           (e)          |                                    P=0.546N        |
|POLY 6             |                                           (e)          |                                    P=0.697N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    (e)             |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.417N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Eye: Lens                                                                                                                        |
|     Cataract                                                                                                                    |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/0 (0%)                 1/1 (100%)   |           6/6 (100%)               2/3 (67%)       |
|POLY-3 ADJUSTED (b)|                  0.0%                     100.0%       |           100.0%                   78.6%           |
|TERMINAL (d)       |                  0/0 (0%)                 1/1 (100%)   |           3/3 (100%)               1/1 (100%)      |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           543                      591             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.317N        |
|POLY 3             |                                           (e)          |                                    P=0.928N        |
|POLY 1.5           |                                           (e)          |                                    P=0.730N        |
|POLY 6             |                                           (e)          |                                    P=1.000N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.402N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.333N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 13

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Eye: Retina                                                                                                                      |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/0 (0%)                 1/1 (100%)   |           6/6 (100%)               2/3 (67%)       |
|POLY-3 ADJUSTED (b)|                  0.0%                     100.0%       |           100.0%                   78.6%           |
|TERMINAL (d)       |                  0/0 (0%)                 1/1 (100%)   |           3/3 (100%)               1/1 (100%)      |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           543                      591             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.317N        |
|POLY 3             |                                           (e)          |                                    P=0.928N        |
|POLY 1.5           |                                           (e)          |                                    P=0.730N        |
|POLY 6             |                                           (e)          |                                    P=1.000N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.402N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.333N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Harderian Gland                                                                                                                  |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               2/100 (2%)   |           0/100 (0%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     2.4%         |           0.0%                     2.4%            |
|TERMINAL (d)       |                  2/57 (4%)                1/59 (2%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  736 (T)                  720          |           ---                      730             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.678N     |                                    P=0.238         |
|POLY 3             |                                           P=0.687      |                                    P=0.236         |
|POLY 1.5           |                                           P=0.689      |                                    P=0.237         |
|POLY 6             |                                           P=0.687      |                                    P=0.236         |
|LOGISTIC REGRESSION|                                           P=0.687N     |                                    P=0.238         |
|COCH-ARM / FISHERS |                                           P=0.689N     |                                    P=0.249         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 14

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Harderian Gland                                                                                                                  |
|     Infiltration Cellular Lymphocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  43/100 (43%)             60/100 (60%) |           69/100 (69%)             66/100 (66%)    |
|POLY-3 ADJUSTED (b)|                  48.0%                    66.3%        |           72.5%                    69.8%           |
|TERMINAL (d)       |                  29/57 (51%)              38/59 (64%)  |           38/59 (64%)              38/58 (66%)     |
|FIRST INCIDENCE    |                  573                      470          |           494                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.029 *    |                                    P=0.464N        |
|POLY 3             |                                           P=0.007 **   |                                    P=0.397N        |
|POLY 1.5           |                                           P=0.008 **   |                                    P=0.390N        |
|POLY 6             |                                           P=0.008 **   |                                    P=0.409N        |
|LOGISTIC REGRESSION|                                           P=0.007 **   |                                    P=0.384N        |
|COCH-ARM / FISHERS |                                           P=0.012 *    |                                    P=0.381N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Harderian Gland                                                                                                                  |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  10/100 (10%)             6/100 (6%)   |           10/100 (10%)             15/100 (15%)    |
|POLY-3 ADJUSTED (b)|                  11.4%                    7.1%         |           11.6%                    17.7%           |
|TERMINAL (d)       |                  4/57 (7%)                3/59 (5%)    |           7/59 (12%)               11/58 (19%)     |
|FIRST INCIDENCE    |                  527                      576          |           591                      602             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.221N     |                                    P=0.183         |
|POLY 3             |                                           P=0.239N     |                                    P=0.178         |
|POLY 1.5           |                                           P=0.231N     |                                    P=0.183         |
|POLY 6             |                                           P=0.244N     |                                    P=0.180         |
|LOGISTIC REGRESSION|                                           P=0.215N     |                                    P=0.181         |
|COCH-ARM / FISHERS |                                           P=0.218N     |                                    P=0.196         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 15

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Heart                                                                                                                            |
|     Cardiomyopathy                                                                                                              |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  88/100 (88%)             87/100 (87%) |           53/100 (53%)             60/100 (60%)    |
|POLY-3 ADJUSTED (b)|                  92.0%                    90.5%        |           59.8%                    67.9%           |
|TERMINAL (d)       |                  55/57 (97%)              55/59 (93%)  |           39/59 (66%)              43/58 (74%)     |
|FIRST INCIDENCE    |                  476                      306          |           591                      462             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.442N     |                                    P=0.176         |
|POLY 3             |                                           P=0.455N     |                                    P=0.156         |
|POLY 1.5           |                                           P=0.456N     |                                    P=0.163         |
|POLY 6             |                                           P=0.468N     |                                    P=0.168         |
|LOGISTIC REGRESSION|                                           P=0.588      |                                    P=0.127         |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.196         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Heart                                                                                                                            |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               2/100 (2%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     2.3%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      365          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.240      |                                    (e)             |
|POLY 3             |                                           P=0.238      |                                    (e)             |
|POLY 1.5           |                                           P=0.238      |                                    (e)             |
|POLY 6             |                                           P=0.238      |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.258      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 16

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Heart: Atrium                                                                                                                    |
|     Thrombosis                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  6/100 (6%)               4/100 (4%)   |           1/100 (1%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  6.9%                     4.7%         |           1.2%                     0.0%            |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  658                      576          |           729                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.374N     |                                    P=0.500N        |
|POLY 3             |                                           P=0.388N     |                                    P=0.509N        |
|POLY 1.5           |                                           P=0.383N     |                                    P=0.507N        |
|POLY 6             |                                           P=0.388N     |                                    P=0.507N        |
|LOGISTIC REGRESSION|                                           P=0.370N     |                                    P=0.501N        |
|COCH-ARM / FISHERS |                                           P=0.374N     |                                    P=0.500N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Islets, Pancreatic                                                                                                               |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                7/100 (7%)   |           0/100 (0%)               1/99 (1%)       |
|POLY-3 ADJUSTED (b)|                  1.2%                     8.3%         |           0.0%                     1.2%            |
|TERMINAL (d)       |                  1/57 (2%)                6/59 (10%)   |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  736 (T)                  577          |           ---                      608             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.037 *    |                                    P=0.493         |
|POLY 3             |                                           P=0.033 *    |                                    P=0.500         |
|POLY 1.5           |                                           P=0.034 *    |                                    P=0.500         |
|POLY 6             |                                           P=0.033 *    |                                    P=0.500         |
|LOGISTIC REGRESSION|                                           P=0.034 *    |                                    P=0.537         |
|COCH-ARM / FISHERS |                                           P=0.033 *    |                                    P=0.497         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 17

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney                                                                                                                           |
|     Infiltration Cellular Lymphocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               0/100 (0%)   |           3/100 (3%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           3.5%                     1.2%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           2/59 (3%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           736                      608             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.317N        |
|POLY 3             |                                           (e)          |                                    P=0.314N        |
|POLY 1.5           |                                           (e)          |                                    P=0.313N        |
|POLY 6             |                                           (e)          |                                    P=0.310N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.312N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.311N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney                                                                                                                           |
|     Mineralization                                                                                                              |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  39/100 (39%)             41/100 (41%) |           23/100 (23%)             39/100 (39%)    |
|POLY-3 ADJUSTED (b)|                  43.5%                    47.2%        |           26.4%                    44.5%           |
|TERMINAL (d)       |                  23/57 (40%)              27/59 (46%)  |           16/59 (27%)              29/58 (50%)     |
|FIRST INCIDENCE    |                  406                      365          |           617                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.500      |                                    P=0.010 *       |
|POLY 3             |                                           P=0.365      |                                    P=0.008 **      |
|POLY 1.5           |                                           P=0.396      |                                    P=0.008 **      |
|POLY 6             |                                           P=0.339      |                                    P=0.007 **      |
|LOGISTIC REGRESSION|                                           P=0.386      |                                    P=0.008 **      |
|COCH-ARM / FISHERS |                                           P=0.443      |                                    P=0.011 *       |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 18

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney                                                                                                                           |
|     Nephropathy                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  92/100 (92%)             89/100 (89%) |           54/100 (54%)             51/100 (51%)    |
|POLY-3 ADJUSTED (b)|                  94.9%                    92.9%        |           58.4%                    55.8%           |
|TERMINAL (d)       |                  57/57 (100%)             58/59 (98%)  |           34/59 (58%)              30/58 (52%)     |
|FIRST INCIDENCE    |                  303                      306          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.348N     |                                    P=0.445N        |
|POLY 3             |                                           P=0.378N     |                                    P=0.417N        |
|POLY 1.5           |                                           P=0.343N     |                                    P=0.411N        |
|POLY 6             |                                           P=0.449N     |                                    P=0.410N        |
|LOGISTIC REGRESSION|                                           P=0.385N     |                                    P=0.406N        |
|COCH-ARM / FISHERS |                                           P=0.315N     |                                    P=0.389N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Pelvis                                                                                                                   |
|     Inflammation Acute                                                                                                          |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               2/100 (2%)   |           2/100 (2%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     2.3%         |           2.3%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      306          |           543                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.231      |                                    P=0.256N        |
|POLY 3             |                                           P=0.238      |                                    P=0.249N        |
|POLY 1.5           |                                           P=0.238      |                                    P=0.246N        |
|POLY 6             |                                           P=0.238      |                                    P=0.250N        |
|LOGISTIC REGRESSION|                                           P=0.261      |                                    P=0.177N        |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    P=0.249N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 19

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Pelvis                                                                                                                   |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               0/100 (0%)   |           2/100 (2%)               4/100 (4%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           2.3%                     4.8%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           2/59 (3%)                4/58 (7%)       |
|FIRST INCIDENCE    |                  579                      ---          |           737 (T)                  737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.247N     |                                    P=0.330         |
|POLY 3             |                                           P=0.248N     |                                    P=0.331         |
|POLY 1.5           |                                           P=0.245N     |                                    P=0.333         |
|POLY 6             |                                           P=0.249N     |                                    P=0.332         |
|LOGISTIC REGRESSION|                                           P=0.230N     |                                    P=0.330         |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    P=0.341         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Pelvis, Transitional Epithelium                                                                                          |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               0/100 (0%)   |           2/100 (2%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           2.3%                     1.2%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  605                      ---          |           462                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.252N     |                                    P=0.510N        |
|POLY 3             |                                           P=0.248N     |                                    P=0.514N        |
|POLY 1.5           |                                           P=0.245N     |                                    P=0.510N        |
|POLY 6             |                                           P=0.249N     |                                    P=0.514N        |
|LOGISTIC REGRESSION|                                           P=0.234N     |                                    P=0.468N        |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    P=0.500N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 20

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Renal Tubule                                                                                                             |
|     Accumulation, Hyaline Droplet                                                                                               |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               0/100 (0%)   |           5/100 (5%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           5.8%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           4/59 (7%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           691                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.036N*       |
|POLY 3             |                                           (e)          |                                    P=0.036N*       |
|POLY 1.5           |                                           (e)          |                                    P=0.035N*       |
|POLY 6             |                                           (e)          |                                    P=0.035N*       |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.035N*       |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.030N*       |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Renal Tubule                                                                                                             |
|     Degeneration                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               0/100 (0%)   |           2/100 (2%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           2.3%                     3.5%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  659                      ---          |           553                      480             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.240N     |                                    P=0.478         |
|POLY 3             |                                           P=0.247N     |                                    P=0.496         |
|POLY 1.5           |                                           P=0.244N     |                                    P=0.496         |
|POLY 6             |                                           P=0.248N     |                                    P=0.498         |
|LOGISTIC REGRESSION|                                           P=0.241N     |                                    P=0.653N        |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    P=0.500         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 21

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Kidney: Renal Tubule                                                                                                             |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  29/100 (29%)             35/100 (35%) |           26/100 (26%)             11/100 (11%)    |
|POLY-3 ADJUSTED (b)|                  32.0%                    38.5%        |           28.8%                    12.9%           |
|TERMINAL (d)       |                  9/57 (16%)               13/59 (22%)  |           13/59 (22%)              4/58 (7%)       |
|FIRST INCIDENCE    |                  573                      527          |           462                      594             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.255      |                                    P=0.011N*       |
|POLY 3             |                                           P=0.218      |                                    P=0.007N**      |
|POLY 1.5           |                                           P=0.218      |                                    P=0.006N**      |
|POLY 6             |                                           P=0.225      |                                    P=0.008N**      |
|LOGISTIC REGRESSION|                                           P=0.236      |                                    P=0.005N**      |
|COCH-ARM / FISHERS |                                           P=0.224      |                                    P=0.005N**      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Basophilic Focus                                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  35/100 (35%)             36/100 (36%) |           66/100 (66%)             78/100 (78%)    |
|POLY-3 ADJUSTED (b)|                  40.3%                    42.5%        |           71.7%                    81.1%           |
|TERMINAL (d)       |                  31/57 (54%)              33/59 (56%)  |           46/59 (78%)              48/58 (83%)     |
|FIRST INCIDENCE    |                  583                      582          |           533                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.564N     |                                    P=0.070         |
|POLY 3             |                                           P=0.441      |                                    P=0.076         |
|POLY 1.5           |                                           P=0.463      |                                    P=0.056         |
|POLY 6             |                                           P=0.432      |                                    P=0.124         |
|LOGISTIC REGRESSION|                                           P=0.482      |                                    P=0.031 *       |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.041 *       |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 22

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Clear Cell Focus                                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  44/100 (44%)             41/100 (41%) |           6/100 (6%)               18/100 (18%)    |
|POLY-3 ADJUSTED (b)|                  51.0%                    48.5%        |           7.0%                     21.2%           |
|TERMINAL (d)       |                  41/57 (72%)              39/59 (66%)  |           6/59 (10%)               16/58 (28%)     |
|FIRST INCIDENCE    |                  647                      559          |           737 (T)                  430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.269N     |                                    P=0.006 **      |
|POLY 3             |                                           P=0.434N     |                                    P=0.006 **      |
|POLY 1.5           |                                           P=0.418N     |                                    P=0.007 **      |
|POLY 6             |                                           P=0.434N     |                                    P=0.006 **      |
|LOGISTIC REGRESSION|                                           P=0.323N     |                                    P=0.007 **      |
|COCH-ARM / FISHERS |                                           P=0.387N     |                                    P=0.008 **      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Degeneration Cystic Focal                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  8/100 (8%)               5/100 (5%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  9.2%                     5.9%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  5/57 (9%)                3/59 (5%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  579                      636          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.280N     |                                    (e)             |
|POLY 3             |                                           P=0.300N     |                                    (e)             |
|POLY 1.5           |                                           P=0.295N     |                                    (e)             |
|POLY 6             |                                           P=0.301N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.295N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.284N     |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 23

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Eosinophilic Focus                                                                                                          |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  21/100 (21%)             17/100 (17%) |           18/100 (18%)             31/100 (31%)    |
|POLY-3 ADJUSTED (b)|                  24.3%                    20.2%        |           20.6%                    36.0%           |
|TERMINAL (d)       |                  17/57 (30%)              15/59 (25%)  |           11/59 (19%)              24/58 (41%)     |
|FIRST INCIDENCE    |                  674                      688          |           547                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.251N     |                                    P=0.024 *       |
|POLY 3             |                                           P=0.324N     |                                    P=0.016 *       |
|POLY 1.5           |                                           P=0.314N     |                                    P=0.018 *       |
|POLY 6             |                                           P=0.328N     |                                    P=0.015 *       |
|LOGISTIC REGRESSION|                                           P=0.283N     |                                    P=0.019 *       |
|COCH-ARM / FISHERS |                                           P=0.295N     |                                    P=0.024 *       |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hematopoietic Cell Proliferation                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  5/100 (5%)               2/100 (2%)   |           6/100 (6%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  5.8%                     2.4%         |           6.9%                     2.4%            |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  649                      535          |           462                      632             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.234N     |                                    P=0.150N        |
|POLY 3             |                                           P=0.229N     |                                    P=0.153N        |
|POLY 1.5           |                                           P=0.226N     |                                    P=0.149N        |
|POLY 6             |                                           P=0.229N     |                                    P=0.156N        |
|LOGISTIC REGRESSION|                                           P=0.205N     |                                    P=0.109N        |
|COCH-ARM / FISHERS |                                           P=0.222N     |                                    P=0.140N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 24

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Hepatodiaphragmatic Nodule                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               1/100 (1%)   |           8/100 (8%)               6/100 (6%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     1.2%         |           9.3%                     7.1%            |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |           5/59 (9%)                3/58 (5%)       |
|FIRST INCIDENCE    |                  736 (T)                  688          |           602                      480             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.494N     |                                    P=0.408N        |
|POLY 3             |                                           P=0.510N     |                                    P=0.401N        |
|POLY 1.5           |                                           P=0.507N     |                                    P=0.399N        |
|POLY 6             |                                           P=0.509N     |                                    P=0.396N        |
|LOGISTIC REGRESSION|                                           P=0.507N     |                                    P=0.391N        |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.391N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Infiltration Cellular Mixed Cell                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  11/100 (11%)             26/100 (26%) |           32/100 (32%)             27/100 (27%)    |
|POLY-3 ADJUSTED (b)|                  12.8%                    30.6%        |           35.7%                    31.6%           |
|TERMINAL (d)       |                  10/57 (18%)              24/59 (41%)  |           21/59 (36%)              22/58 (38%)     |
|FIRST INCIDENCE    |                  583                      535          |           494                      585             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.005 **   |                                    P=0.300N        |
|POLY 3             |                                           P=0.003 **   |                                    P=0.337N        |
|POLY 1.5           |                                           P=0.004 **   |                                    P=0.312N        |
|POLY 6             |                                           P=0.003 **   |                                    P=0.357N        |
|LOGISTIC REGRESSION|                                           P=0.004 **   |                                    P=0.293N        |
|COCH-ARM / FISHERS |                                           P=0.005 **   |                                    P=0.268N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 25

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               3/100 (3%)   |           1/100 (1%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     3.5%         |           1.2%                     2.4%            |
|TERMINAL (d)       |                  2/57 (4%)                1/59 (2%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  736 (T)                  470          |           737 (T)                  434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.509      |                                    P=0.495         |
|POLY 3             |                                           P=0.498      |                                    P=0.498         |
|POLY 1.5           |                                           P=0.498      |                                    P=0.498         |
|POLY 6             |                                           P=0.500      |                                    P=0.501         |
|LOGISTIC REGRESSION|                                           P=0.529      |                                    P=0.582         |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Mixed Cell Focus                                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  25/100 (25%)             18/100 (18%) |           39/100 (39%)             37/100 (37%)    |
|POLY-3 ADJUSTED (b)|                  29.0%                    21.1%        |           44.2%                    42.5%           |
|TERMINAL (d)       |                  23/57 (40%)              15/59 (25%)  |           31/59 (53%)              29/58 (50%)     |
|FIRST INCIDENCE    |                  647                      535          |           533                      448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.118N     |                                    P=0.481N        |
|POLY 3             |                                           P=0.153N     |                                    P=0.470N        |
|POLY 1.5           |                                           P=0.154N     |                                    P=0.467N        |
|POLY 6             |                                           P=0.145N     |                                    P=0.457N        |
|LOGISTIC REGRESSION|                                           P=0.160N     |                                    P=0.488N        |
|COCH-ARM / FISHERS |                                           P=0.151N     |                                    P=0.442N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 26

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Necrosis                                                                                                                    |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  8/100 (8%)               2/100 (2%)   |           3/100 (3%)               4/100 (4%)      |
|POLY-3 ADJUSTED (b)|                  9.1%                     2.4%         |           3.5%                     4.7%            |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |           1/59 (2%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  406                      688          |           690                      575             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.054N     |                                    P=0.499         |
|POLY 3             |                                           P=0.060N     |                                    P=0.493         |
|POLY 1.5           |                                           P=0.057N     |                                    P=0.494         |
|POLY 6             |                                           P=0.061N     |                                    P=0.496         |
|LOGISTIC REGRESSION|                                           P=0.044N*    |                                    P=0.502         |
|COCH-ARM / FISHERS |                                           P=0.050N     |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver                                                                                                                            |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               2/100 (2%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     2.4%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.246      |                                    (e)             |
|POLY 3             |                                           P=0.236      |                                    (e)             |
|POLY 1.5           |                                           P=0.237      |                                    (e)             |
|POLY 6             |                                           P=0.236      |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.246      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 27

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver: Bile Duct                                                                                                                 |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  79/100 (79%)             79/100 (79%) |           28/100 (28%)             24/100 (24%)    |
|POLY-3 ADJUSTED (b)|                  83.9%                    87.2%        |           32.2%                    28.0%           |
|TERMINAL (d)       |                  49/57 (86%)              55/59 (93%)  |           20/59 (34%)              12/58 (21%)     |
|FIRST INCIDENCE    |                  406                      489          |           625                      627             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.492N     |                                    P=0.342N        |
|POLY 3             |                                           P=0.319      |                                    P=0.335N        |
|POLY 1.5           |                                           P=0.428      |                                    P=0.333N        |
|POLY 6             |                                           P=0.205      |                                    P=0.321N        |
|LOGISTIC REGRESSION|                                           P=0.380      |                                    P=0.340N        |
|COCH-ARM / FISHERS |                                           P=0.569N     |                                    P=0.314N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Liver: Hepatocyte                                                                                                                |
|     Vacuolization Cytoplasmic                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  14/100 (14%)             20/100 (20%) |           11/100 (11%)             9/100 (9%)      |
|POLY-3 ADJUSTED (b)|                  15.9%                    22.6%        |           12.3%                    10.3%           |
|TERMINAL (d)       |                  8/57 (14%)               10/59 (17%)  |           1/59 (2%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  476                      306          |           533                      480             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.189      |                                    P=0.438N        |
|POLY 3             |                                           P=0.175      |                                    P=0.436N        |
|POLY 1.5           |                                           P=0.174      |                                    P=0.427N        |
|POLY 6             |                                           P=0.181      |                                    P=0.440N        |
|LOGISTIC REGRESSION|                                           P=0.194      |                                    P=0.259N        |
|COCH-ARM / FISHERS |                                           P=0.173      |                                    P=0.407N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 28

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Congestion                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  5/100 (5%)               3/100 (3%)   |           5/100 (5%)               7/100 (7%)      |
|POLY-3 ADJUSTED (b)|                  5.8%                     3.5%         |           5.7%                     8.1%            |
|TERMINAL (d)       |                  2/57 (4%)                1/59 (2%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  693                      559          |           494                      448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.360N     |                                    P=0.370         |
|POLY 3             |                                           P=0.369N     |                                    P=0.374         |
|POLY 1.5           |                                           P=0.366N     |                                    P=0.376         |
|POLY 6             |                                           P=0.367N     |                                    P=0.376         |
|LOGISTIC REGRESSION|                                           P=0.355N     |                                    P=0.535         |
|COCH-ARM / FISHERS |                                           P=0.360N     |                                    P=0.384         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Infiltration Cellular Histiocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  8/100 (8%)               5/100 (5%)   |           31/100 (31%)             35/100 (35%)    |
|POLY-3 ADJUSTED (b)|                  9.3%                     5.9%         |           35.8%                    41.1%           |
|TERMINAL (d)       |                  7/57 (12%)               4/59 (7%)    |           26/59 (44%)              29/58 (50%)     |
|FIRST INCIDENCE    |                  722                      636          |           591                      594             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.267N     |                                    P=0.290         |
|POLY 3             |                                           P=0.295N     |                                    P=0.286         |
|POLY 1.5           |                                           P=0.292N     |                                    P=0.295         |
|POLY 6             |                                           P=0.293N     |                                    P=0.291         |
|LOGISTIC REGRESSION|                                           P=0.284N     |                                    P=0.291         |
|COCH-ARM / FISHERS |                                           P=0.284N     |                                    P=0.326         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 29

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Infiltration Cellular Lymphocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               3/100 (3%)   |           1/100 (1%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     3.6%         |           1.2%                     3.6%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           0/59 (0%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  ---                      559          |           543                      702             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.124      |                                    P=0.302         |
|POLY 3             |                                           P=0.119      |                                    P=0.300         |
|POLY 1.5           |                                           P=0.120      |                                    P=0.302         |
|POLY 6             |                                           P=0.119      |                                    P=0.300         |
|LOGISTIC REGRESSION|                                           P=0.124      |                                    P=0.311         |
|COCH-ARM / FISHERS |                                           P=0.123      |                                    P=0.311         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung                                                                                                                             |
|     Infiltration Cellular Mixed Cell                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               0/100 (0%)   |           2/100 (2%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           2.3%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           2/59 (3%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           737 (T)                  ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.243N        |
|POLY 3             |                                           (e)          |                                    P=0.245N        |
|POLY 1.5           |                                           (e)          |                                    P=0.244N        |
|POLY 6             |                                           (e)          |                                    P=0.244N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    (e)             |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.249N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 30

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung: Alveolar Epithelium                                                                                                        |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  6/100 (6%)               4/100 (4%)   |           4/100 (4%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  7.0%                     4.7%         |           4.7%                     3.6%            |
|TERMINAL (d)       |                  5/57 (9%)                2/59 (3%)    |           4/59 (7%)                3/58 (5%)       |
|FIRST INCIDENCE    |                  699                      582          |           737 (T)                  737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.369N     |                                    P=0.509N        |
|POLY 3             |                                           P=0.381N     |                                    P=0.513N        |
|POLY 1.5           |                                           P=0.380N     |                                    P=0.510N        |
|POLY 6             |                                           P=0.377N     |                                    P=0.511N        |
|LOGISTIC REGRESSION|                                           P=0.382N     |                                    P=0.509N        |
|COCH-ARM / FISHERS |                                           P=0.374N     |                                    P=0.500N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung: Bronchus                                                                                                                   |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               2/100 (2%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     2.4%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.246      |                                    (e)             |
|POLY 3             |                                           P=0.236      |                                    (e)             |
|POLY 1.5           |                                           P=0.237      |                                    (e)             |
|POLY 6             |                                           P=0.236      |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.246      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 31

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lung: Interstitium                                                                                                               |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  6/100 (6%)               3/100 (3%)   |           10/100 (10%)             7/100 (7%)      |
|POLY-3 ADJUSTED (b)|                  7.0%                     3.6%         |           11.6%                    8.1%            |
|TERMINAL (d)       |                  4/57 (7%)                2/59 (3%)    |           7/59 (12%)               2/58 (3%)       |
|FIRST INCIDENCE    |                  617                      576          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.247N     |                                    P=0.330N        |
|POLY 3             |                                           P=0.259N     |                                    P=0.301N        |
|POLY 1.5           |                                           P=0.256N     |                                    P=0.306N        |
|POLY 6             |                                           P=0.260N     |                                    P=0.289N        |
|LOGISTIC REGRESSION|                                           P=0.254N     |                                    P=0.252N        |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    P=0.307N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mandibular                                                                                                           |
|     Degeneration Cystic                                                                                                         |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  15/99 (15%)              11/100 (11%) |           11/100 (11%)             15/100 (15%)    |
|POLY-3 ADJUSTED (b)|                  17.6%                    13.0%        |           12.9%                    17.9%           |
|TERMINAL (d)       |                  14/57 (25%)              10/59 (17%)  |           10/59 (17%)              15/58 (26%)     |
|FIRST INCIDENCE    |                  658                      576          |           697                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.234N     |                                    P=0.242         |
|POLY 3             |                                           P=0.272N     |                                    P=0.241         |
|POLY 1.5           |                                           P=0.267N     |                                    P=0.247         |
|POLY 6             |                                           P=0.271N     |                                    P=0.240         |
|LOGISTIC REGRESSION|                                           P=0.264N     |                                    P=0.257         |
|COCH-ARM / FISHERS |                                           P=0.255N     |                                    P=0.264         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 32

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mandibular                                                                                                           |
|     Hemorrhage                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/99 (2%)                1/100 (1%)   |           1/100 (1%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     1.2%         |           1.2%                     3.5%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  704                      736 (T)      |           737 (T)                  448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.485N     |                                    P=0.297         |
|POLY 3             |                                           P=0.508N     |                                    P=0.306         |
|POLY 1.5           |                                           P=0.503N     |                                    P=0.305         |
|POLY 6             |                                           P=0.509N     |                                    P=0.308         |
|LOGISTIC REGRESSION|                                           P=0.502N     |                                    P=0.381         |
|COCH-ARM / FISHERS |                                           P=0.496N     |                                    P=0.311         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mandibular                                                                                                           |
|     Hyperplasia Lymphoid                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  17/99 (17%)              14/100 (14%) |           13/100 (13%)             7/100 (7%)      |
|POLY-3 ADJUSTED (b)|                  19.3%                    16.3%        |           15.0%                    8.2%            |
|TERMINAL (d)       |                  10/57 (18%)              9/59 (15%)   |           7/59 (12%)               3/58 (5%)       |
|FIRST INCIDENCE    |                  406                      535          |           565                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.324N     |                                    P=0.133N        |
|POLY 3             |                                           P=0.375N     |                                    P=0.128N        |
|POLY 1.5           |                                           P=0.362N     |                                    P=0.126N        |
|POLY 6             |                                           P=0.379N     |                                    P=0.128N        |
|LOGISTIC REGRESSION|                                           P=0.333N     |                                    P=0.122N        |
|COCH-ARM / FISHERS |                                           P=0.337N     |                                    P=0.119N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 33

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mandibular                                                                                                           |
|     Infiltration Cellular Histiocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                0/100 (0%)   |           3/100 (3%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           3.5%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           3/59 (5%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           737 (T)                  ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.125N        |
|POLY 3             |                                           (e)          |                                    P=0.126N        |
|POLY 1.5           |                                           (e)          |                                    P=0.125N        |
|POLY 6             |                                           (e)          |                                    P=0.125N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    (e)             |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.123N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mandibular                                                                                                           |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                2/100 (2%)   |           0/100 (0%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     2.4%         |           0.0%                     3.6%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  736 (T)                  582          |           ---                      602             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.497      |                                    P=0.122         |
|POLY 3             |                                           P=0.498      |                                    P=0.120         |
|POLY 1.5           |                                           P=0.499      |                                    P=0.120         |
|POLY 6             |                                           P=0.498      |                                    P=0.121         |
|LOGISTIC REGRESSION|                                           P=0.505      |                                    P=0.132         |
|COCH-ARM / FISHERS |                                           P=0.504      |                                    P=0.123         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 34

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mediastinal                                                                                                          |
|     Hemorrhage                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               1/100 (1%)   |           1/100 (1%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     1.2%         |           1.2%                     3.6%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           1/59 (2%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  406                      736 (T)      |           737 (T)                  727             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.493N     |                                    P=0.304         |
|POLY 3             |                                           P=0.515N     |                                    P=0.301         |
|POLY 1.5           |                                           P=0.510N     |                                    P=0.303         |
|POLY 6             |                                           P=0.517N     |                                    P=0.302         |
|LOGISTIC REGRESSION|                                           P=0.475N     |                                    P=0.306         |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.311         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mesenteric                                                                                                           |
|     Hemorrhage                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               1/100 (1%)   |           3/100 (3%)               4/99 (4%)       |
|POLY-3 ADJUSTED (b)|                  2.3%                     1.2%         |           3.5%                     4.8%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                3/57 (5%)       |
|FIRST INCIDENCE    |                  704                      591          |           533                      627             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.501N     |                                    P=0.483         |
|POLY 3             |                                           P=0.509N     |                                    P=0.479         |
|POLY 1.5           |                                           P=0.506N     |                                    P=0.484         |
|POLY 6             |                                           P=0.508N     |                                    P=0.477         |
|LOGISTIC REGRESSION|                                           P=0.495N     |                                    P=0.531         |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.494         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 35

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mesenteric                                                                                                           |
|     Hyperplasia Lymphoid                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               3/100 (3%)   |           1/100 (1%)               0/99 (0%)       |
|POLY-3 ADJUSTED (b)|                  0.0%                     3.6%         |           1.2%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           0/59 (0%)                0/57 (0%)       |
|FIRST INCIDENCE    |                  ---                      576          |           494                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.123      |                                    P=0.512N        |
|POLY 3             |                                           P=0.119      |                                    P=0.517N        |
|POLY 1.5           |                                           P=0.120      |                                    P=0.513N        |
|POLY 6             |                                           P=0.119      |                                    P=0.517N        |
|LOGISTIC REGRESSION|                                           P=0.123      |                                    P=0.290N        |
|COCH-ARM / FISHERS |                                           P=0.123      |                                    P=0.503N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Lymph Node, Mesenteric                                                                                                           |
|     Infiltration Cellular Histiocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  65/100 (65%)             80/100 (80%) |           85/100 (85%)             86/99 (87%)     |
|POLY-3 ADJUSTED (b)|                  72.0%                    83.1%        |           88.2%                    90.1%           |
|TERMINAL (d)       |                  48/57 (84%)              50/59 (85%)  |           55/59 (93%)              52/57 (91%)     |
|FIRST INCIDENCE    |                  476                      306          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.052      |                                    P=0.387         |
|POLY 3             |                                           P=0.038 *    |                                    P=0.421         |
|POLY 1.5           |                                           P=0.023 *    |                                    P=0.420         |
|POLY 6             |                                           P=0.076      |                                    P=0.442         |
|LOGISTIC REGRESSION|                                           P=0.007 **   |                                    P=0.364         |
|COCH-ARM / FISHERS |                                           P=0.013 *    |                                    P=0.431         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 36

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  18/99 (18%)              14/95 (15%)  |           47/100 (47%)             53/100 (53%)    |
|POLY-3 ADJUSTED (b)|                  20.4%                    16.8%        |           51.9%                    59.2%           |
|TERMINAL (d)       |                  7/57 (12%)               6/58 (10%)   |           29/59 (49%)              35/58 (60%)     |
|FIRST INCIDENCE    |                  581                      535          |           543                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.308N     |                                    P=0.238         |
|POLY 3             |                                           P=0.339N     |                                    P=0.194         |
|POLY 1.5           |                                           P=0.336N     |                                    P=0.204         |
|POLY 6             |                                           P=0.335N     |                                    P=0.198         |
|LOGISTIC REGRESSION|                                           P=0.318N     |                                    P=0.196         |
|COCH-ARM / FISHERS |                                           P=0.326N     |                                    P=0.240         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Galactocele                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                5/95 (5%)    |           10/100 (10%)             10/100 (10%)    |
|POLY-3 ADJUSTED (b)|                  0.0%                     6.2%         |           11.4%                    11.7%           |
|TERMINAL (d)       |                  0/57 (0%)                4/58 (7%)    |           4/59 (7%)                5/58 (9%)       |
|FIRST INCIDENCE    |                  ---                      470          |           602                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.037 *    |                                    P=0.578         |
|POLY 3             |                                           P=0.030 *    |                                    P=0.572         |
|POLY 1.5           |                                           P=0.030 *    |                                    P=0.578         |
|POLY 6             |                                           P=0.031 *    |                                    P=0.569         |
|LOGISTIC REGRESSION|                                           P=0.032 *    |                                    P=0.585N        |
|COCH-ARM / FISHERS |                                           P=0.027 *    |                                    P=0.593N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 37

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/99 (2%)                1/95 (1%)    |           0/100 (0%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  2.4%                     1.2%         |           0.0%                     2.4%            |
|TERMINAL (d)       |                  2/57 (4%)                0/58 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  736 (T)                  577          |           ---                      608             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.506N     |                                    P=0.234         |
|POLY 3             |                                           P=0.522N     |                                    P=0.237         |
|POLY 1.5           |                                           P=0.522N     |                                    P=0.237         |
|POLY 6             |                                           P=0.516N     |                                    P=0.237         |
|LOGISTIC REGRESSION|                                           P=0.513N     |                                    P=0.247         |
|COCH-ARM / FISHERS |                                           P=0.516N     |                                    P=0.249         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland                                                                                                                    |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/99 (2%)                4/95 (4%)    |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     4.9%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/58 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  303                      558          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.325      |                                    (e)             |
|POLY 3             |                                           P=0.323      |                                    (e)             |
|POLY 1.5           |                                           P=0.321      |                                    (e)             |
|POLY 6             |                                           P=0.329      |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.373      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.322      |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 38

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mammary Gland: Epithelium                                                                                                        |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  9/99 (9%)                4/95 (4%)    |           1/100 (1%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  10.6%                    5.0%         |           1.2%                     3.6%            |
|TERMINAL (d)       |                  8/57 (14%)               4/58 (7%)    |           1/59 (2%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  722                      736 (T)      |           737 (T)                  575             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.116N     |                                    P=0.301         |
|POLY 3             |                                           P=0.147N     |                                    P=0.303         |
|POLY 1.5           |                                           P=0.146N     |                                    P=0.304         |
|POLY 6             |                                           P=0.143N     |                                    P=0.304         |
|LOGISTIC REGRESSION|                                           P=0.111N     |                                    P=0.303         |
|COCH-ARM / FISHERS |                                           P=0.142N     |                                    P=0.311         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Mesentery: Fat                                                                                                                   |
|     Necrosis                                                                                                                    |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  14/17 (82%)              13/16 (81%)  |           9/11 (82%)               15/16 (94%)     |
|POLY-3 ADJUSTED (b)|                  84.7%                    82.2%        |           88.1%                    96.1%           |
|TERMINAL (d)       |                  5/6 (83%)                6/8 (75%)    |           6/6 (100%)               11/11 (100%)    |
|FIRST INCIDENCE    |                  581                      489          |           598                      591             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.375N     |                                    P=0.500         |
|POLY 3             |                                           P=0.618N     |                                    P=0.437         |
|POLY 1.5           |                                           P=0.631N     |                                    P=0.395         |
|POLY 6             |                                           P=0.594N     |                                    P=0.455         |
|LOGISTIC REGRESSION|                                           P=0.649N     |                                    P=0.599         |
|COCH-ARM / FISHERS |                                           P=0.642N     |                                    P=0.357         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 39

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Nose                                                                                                                             |
|     Inflammation Acute                                                                                                          |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               2/100 (2%)   |           1/100 (1%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     2.4%         |           1.2%                     2.3%            |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  406                      579          |           737 (T)                  434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.491      |                                    P=0.492         |
|POLY 3             |                                           P=0.494      |                                    P=0.499         |
|POLY 1.5           |                                           P=0.496      |                                    P=0.499         |
|POLY 6             |                                           P=0.494      |                                    P=0.502         |
|LOGISTIC REGRESSION|                                           P=0.544      |                                    P=0.701         |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Nose                                                                                                                             |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  27/100 (27%)             34/100 (34%) |           9/100 (9%)               10/100 (10%)    |
|POLY-3 ADJUSTED (b)|                  30.2%                    37.7%        |           10.2%                    11.7%           |
|TERMINAL (d)       |                  17/57 (30%)              19/59 (32%)  |           3/59 (5%)                5/58 (9%)       |
|FIRST INCIDENCE    |                  502                      470          |           462                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.200      |                                    P=0.480         |
|POLY 3             |                                           P=0.179      |                                    P=0.470         |
|POLY 1.5           |                                           P=0.176      |                                    P=0.479         |
|POLY 6             |                                           P=0.192      |                                    P=0.467         |
|LOGISTIC REGRESSION|                                           P=0.181      |                                    P=0.558         |
|COCH-ARM / FISHERS |                                           P=0.178      |                                    P=0.500         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 40

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Nose: Nasolacrimal Duct                                                                                                          |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  7/100 (7%)               8/100 (8%)   |           2/100 (2%)               8/100 (8%)      |
|POLY-3 ADJUSTED (b)|                  8.1%                     9.2%         |           2.3%                     9.5%            |
|TERMINAL (d)       |                  6/57 (11%)               3/59 (5%)    |           1/59 (2%)                6/58 (10%)      |
|FIRST INCIDENCE    |                  647                      306          |           591                      591             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.505      |                                    P=0.050         |
|POLY 3             |                                           P=0.504      |                                    P=0.048 *       |
|POLY 1.5           |                                           P=0.502      |                                    P=0.049 *       |
|POLY 6             |                                           P=0.512      |                                    P=0.048 *       |
|LOGISTIC REGRESSION|                                           P=0.523      |                                    P=0.050         |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.050         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Nose: Olfactory Epithelium                                                                                                       |
|     Cytoplasmic Alteration                                                                                                      |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  36/100 (36%)             29/100 (29%) |           69/100 (69%)             77/100 (77%)    |
|POLY-3 ADJUSTED (b)|                  40.2%                    32.8%        |           73.9%                    82.1%           |
|TERMINAL (d)       |                  24/57 (42%)              17/59 (29%)  |           46/59 (78%)              48/58 (83%)     |
|FIRST INCIDENCE    |                  406                      470          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.188N     |                                    P=0.163         |
|POLY 3             |                                           P=0.189N     |                                    P=0.104         |
|POLY 1.5           |                                           P=0.189N     |                                    P=0.107         |
|POLY 6             |                                           P=0.178N     |                                    P=0.124         |
|LOGISTIC REGRESSION|                                           P=0.195N     |                                    P=0.092         |
|COCH-ARM / FISHERS |                                           P=0.183N     |                                    P=0.132         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 41

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Nose: Respiratory Epithelium                                                                                                     |
|     Cytoplasmic Alteration                                                                                                      |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               1/100 (1%)   |           4/100 (4%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     1.2%         |           4.6%                     1.2%            |
|TERMINAL (d)       |                  2/57 (4%)                1/59 (2%)    |           3/59 (5%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  710                      736 (T)      |           495                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.293N     |                                    P=0.190N        |
|POLY 3             |                                           P=0.318N     |                                    P=0.192N        |
|POLY 1.5           |                                           P=0.314N     |                                    P=0.190N        |
|POLY 6             |                                           P=0.318N     |                                    P=0.192N        |
|LOGISTIC REGRESSION|                                           P=0.304N     |                                    P=0.182N        |
|COCH-ARM / FISHERS |                                           P=0.311N     |                                    P=0.184N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary                                                                                                                            |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           4/100 (4%)               4/99 (4%)       |
|POLY-3 ADJUSTED (b)|                                                        |           4.7%                     4.8%            |
|TERMINAL (d)       |                                                        |           4/59 (7%)                3/58 (5%)       |
|FIRST INCIDENCE    |                                                        |           737 (T)                  608             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.631         |
|POLY 3             |                                                        |                                    P=0.631         |
|POLY 1.5           |                                                        |                                    P=0.631         |
|POLY 6             |                                                        |                                    P=0.636         |
|LOGISTIC REGRESSION|                                                        |                                    P=0.631         |
|COCH-ARM / FISHERS |                                                        |                                    P=0.634         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 42

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary: Follicle                                                                                                                  |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           3/100 (3%)               2/99 (2%)       |
|POLY-3 ADJUSTED (b)|                                                        |           3.5%                     2.4%            |
|TERMINAL (d)       |                                                        |           2/59 (3%)                1/58 (2%)       |
|FIRST INCIDENCE    |                                                        |           553                      462             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.514N        |
|POLY 3             |                                                        |                                    P=0.513N        |
|POLY 1.5           |                                                        |                                    P=0.512N        |
|POLY 6             |                                                        |                                    P=0.510N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.465N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.505N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary: Periovarian Tissue                                                                                                        |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           6/100 (6%)               11/99 (11%)     |
|POLY-3 ADJUSTED (b)|                                                        |           7.0%                     13.0%           |
|TERMINAL (d)       |                                                        |           6/59 (10%)               7/58 (12%)      |
|FIRST INCIDENCE    |                                                        |           737 (T)                  575             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.146         |
|POLY 3             |                                                        |                                    P=0.146         |
|POLY 1.5           |                                                        |                                    P=0.146         |
|POLY 6             |                                                        |                                    P=0.153         |
|LOGISTIC REGRESSION|                                                        |                                    P=0.142         |
|COCH-ARM / FISHERS |                                                        |                                    P=0.150         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 43

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Ovary: Rete Ovarii                                                                                                               |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           8/100 (8%)               16/99 (16%)     |
|POLY-3 ADJUSTED (b)|                                                        |           9.3%                     19.3%           |
|TERMINAL (d)       |                                                        |           6/59 (10%)               15/58 (26%)     |
|FIRST INCIDENCE    |                                                        |           673                      729             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.056         |
|POLY 3             |                                                        |                                    P=0.051         |
|POLY 1.5           |                                                        |                                    P=0.053         |
|POLY 6             |                                                        |                                    P=0.050         |
|LOGISTIC REGRESSION|                                                        |                                    P=0.058         |
|COCH-ARM / FISHERS |                                                        |                                    P=0.060         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pancreas                                                                                                                         |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/98 (3%)                1/100 (1%)   |           0/100 (0%)               0/99 (0%)       |
|POLY-3 ADJUSTED (b)|                  3.5%                     1.2%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  647                      736 (T)      |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.306N     |                                    (e)             |
|POLY 3             |                                           P=0.314N     |                                    (e)             |
|POLY 1.5           |                                           P=0.308N     |                                    (e)             |
|POLY 6             |                                           P=0.318N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.308N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.303N     |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 44

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pancreas                                                                                                                         |
|     Infiltration Cellular Lymphocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  5/98 (5%)                3/100 (3%)   |           14/100 (14%)             7/99 (7%)       |
|POLY-3 ADJUSTED (b)|                  5.9%                     3.5%         |           16.1%                    8.3%            |
|TERMINAL (d)       |                  5/57 (9%)                1/59 (2%)    |           10/59 (17%)              5/58 (9%)       |
|FIRST INCIDENCE    |                  736 (T)                  559          |           533                      594             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.356N     |                                    P=0.094N        |
|POLY 3             |                                           P=0.358N     |                                    P=0.092N        |
|POLY 1.5           |                                           P=0.355N     |                                    P=0.091N        |
|POLY 6             |                                           P=0.356N     |                                    P=0.089N        |
|LOGISTIC REGRESSION|                                           P=0.352N     |                                    P=0.090N        |
|COCH-ARM / FISHERS |                                           P=0.349N     |                                    P=0.086N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pancreas: Acinus                                                                                                                 |
|     Atrophy Focal                                                                                                               |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  33/98 (34%)              41/100 (41%) |           15/100 (15%)             20/99 (20%)     |
|POLY-3 ADJUSTED (b)|                  36.7%                    46.4%        |           17.2%                    23.4%           |
|TERMINAL (d)       |                  19/57 (33%)              26/59 (44%)  |           10/59 (17%)              13/58 (22%)     |
|FIRST INCIDENCE    |                  303                      555          |           553                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.194      |                                    P=0.223         |
|POLY 3             |                                           P=0.119      |                                    P=0.204         |
|POLY 1.5           |                                           P=0.136      |                                    P=0.207         |
|POLY 6             |                                           P=0.112      |                                    P=0.209         |
|LOGISTIC REGRESSION|                                           P=0.168      |                                    P=0.209         |
|COCH-ARM / FISHERS |                                           P=0.179      |                                    P=0.219         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 45

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pancreas: Acinus                                                                                                                 |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  20/98 (20%)              18/100 (18%) |           3/100 (3%)               2/99 (2%)       |
|POLY-3 ADJUSTED (b)|                  23.5%                    21.3%        |           3.5%                     2.4%            |
|TERMINAL (d)       |                  17/57 (30%)              15/59 (25%)  |           2/59 (3%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  670                      552          |           655                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.384N     |                                    P=0.512N        |
|POLY 3             |                                           P=0.437N     |                                    P=0.515N        |
|POLY 1.5           |                                           P=0.424N     |                                    P=0.513N        |
|POLY 6             |                                           P=0.442N     |                                    P=0.513N        |
|LOGISTIC REGRESSION|                                           P=0.439N     |                                    P=0.508N        |
|COCH-ARM / FISHERS |                                           P=0.401N     |                                    P=0.505N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pineal Gland                                                                                                                     |
|     Mineralization                                                                                                              |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  42/81 (52%)              57/91 (63%)  |           56/85 (66%)              40/89 (45%)     |
|POLY-3 ADJUSTED (b)|                  56.2%                    68.7%        |           69.9%                    49.6%           |
|TERMINAL (d)       |                  21/43 (49%)              36/53 (68%)  |           35/51 (69%)              27/55 (49%)     |
|FIRST INCIDENCE    |                  502                      470          |           495                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.145      |                                    P=0.014N*       |
|POLY 3             |                                           P=0.065      |                                    P=0.005N**      |
|POLY 1.5           |                                           P=0.077      |                                    P=0.004N**      |
|POLY 6             |                                           P=0.056      |                                    P=0.006N**      |
|LOGISTIC REGRESSION|                                           P=0.099      |                                    P=0.004N**      |
|COCH-ARM / FISHERS |                                           P=0.101      |                                    P=0.004N**      |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 46

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis                                                                                                   |
|     Angiectasis Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/98 (3%)                2/98 (2%)    |           1/99 (1%)                2/98 (2%)       |
|POLY-3 ADJUSTED (b)|                  3.6%                     2.4%         |           1.2%                     2.4%            |
|TERMINAL (d)       |                  2/57 (4%)                1/58 (2%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  701                      577          |           737 (T)                  585             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.499N     |                                    P=0.494         |
|POLY 3             |                                           P=0.509N     |                                    P=0.497         |
|POLY 1.5           |                                           P=0.506N     |                                    P=0.496         |
|POLY 6             |                                           P=0.508N     |                                    P=0.499         |
|LOGISTIC REGRESSION|                                           P=0.504N     |                                    P=0.522         |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.496         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis                                                                                                   |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  8/98 (8%)                7/98 (7%)    |           21/99 (21%)              25/98 (26%)     |
|POLY-3 ADJUSTED (b)|                  9.4%                     8.3%         |           24.2%                    29.4%           |
|TERMINAL (d)       |                  4/57 (7%)                4/58 (7%)    |           16/59 (27%)              19/58 (33%)     |
|FIRST INCIDENCE    |                  627                      558          |           462                      448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.523N     |                                    P=0.289         |
|POLY 3             |                                           P=0.516N     |                                    P=0.276         |
|POLY 1.5           |                                           P=0.510N     |                                    P=0.279         |
|POLY 6             |                                           P=0.517N     |                                    P=0.283         |
|LOGISTIC REGRESSION|                                           P=0.492N     |                                    P=0.274         |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    P=0.293         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 47

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis                                                                                                   |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  11/98 (11%)              16/98 (16%)  |           10/99 (10%)              7/98 (7%)       |
|POLY-3 ADJUSTED (b)|                  12.8%                    18.8%        |           11.6%                    8.5%            |
|TERMINAL (d)       |                  6/57 (11%)               9/58 (16%)   |           6/59 (10%)               7/58 (12%)      |
|FIRST INCIDENCE    |                  502                      306          |           597                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.222      |                                    P=0.325N        |
|POLY 3             |                                           P=0.196      |                                    P=0.339N        |
|POLY 1.5           |                                           P=0.200      |                                    P=0.331N        |
|POLY 6             |                                           P=0.195      |                                    P=0.344N        |
|LOGISTIC REGRESSION|                                           P=0.211      |                                    P=0.323N        |
|COCH-ARM / FISHERS |                                           P=0.204      |                                    P=0.314N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis                                                                                                   |
|     Hypertrophy Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/98 (2%)                2/98 (2%)    |           0/99 (0%)                1/98 (1%)       |
|POLY-3 ADJUSTED (b)|                  2.4%                     2.4%         |           0.0%                     1.2%            |
|TERMINAL (d)       |                  1/57 (2%)                1/58 (2%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  696                      675          |           ---                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.685N     |                                    P=0.497         |
|POLY 3             |                                           P=0.688      |                                    P=0.500         |
|POLY 1.5           |                                           P=0.689      |                                    P=0.500         |
|POLY 6             |                                           P=0.688      |                                    P=0.500         |
|LOGISTIC REGRESSION|                                           P=0.687      |                                    P=0.497         |
|COCH-ARM / FISHERS |                                           P=0.689N     |                                    P=0.497         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 48

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Distalis                                                                                                   |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/98 (0%)                0/98 (0%)    |           2/99 (2%)                1/98 (1%)       |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           2.3%                     1.2%            |
|TERMINAL (d)       |                  0/57 (0%)                0/58 (0%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           680                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.507N        |
|POLY 3             |                                           (e)          |                                    P=0.509N        |
|POLY 1.5           |                                           (e)          |                                    P=0.509N        |
|POLY 6             |                                           (e)          |                                    P=0.506N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.468N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.504N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Pars Intermedia                                                                                                 |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/98 (3%)                2/98 (2%)    |           0/99 (0%)                0/98 (0%)       |
|POLY-3 ADJUSTED (b)|                  3.5%                     2.4%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  2/57 (4%)                1/58 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  619                      561          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.511N     |                                    (e)             |
|POLY 3             |                                           P=0.510N     |                                    (e)             |
|POLY 1.5           |                                           P=0.507N     |                                    (e)             |
|POLY 6             |                                           P=0.510N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.495N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.500N     |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 49

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Pituitary Gland: Rathke's Cleft                                                                                                  |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/98 (0%)                1/98 (1%)    |           2/99 (2%)                0/98 (0%)       |
|POLY-3 ADJUSTED (b)|                  0.0%                     1.2%         |           2.3%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                1/58 (2%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           565                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.503      |                                    P=0.245N        |
|POLY 3             |                                           P=0.500      |                                    P=0.249N        |
|POLY 1.5           |                                           P=0.500      |                                    P=0.247N        |
|POLY 6             |                                           P=0.500      |                                    P=0.248N        |
|LOGISTIC REGRESSION|                                           P=0.503      |                                    P=0.223N        |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.251N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Preputial Gland                                                                                                                  |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  4/100 (4%)               1/100 (1%)   |                                                    |
|POLY-3 ADJUSTED (b)|                  4.6%                     1.2%         |                                                    |
|TERMINAL (d)       |                  2/57 (4%)                0/59 (0%)    |                                                    |
|FIRST INCIDENCE    |                  647                      579          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.193N     |                                                    |
|POLY 3             |                                           P=0.190N     |                                                    |
|POLY 1.5           |                                           P=0.188N     |                                                    |
|POLY 6             |                                           P=0.191N     |                                                    |
|LOGISTIC REGRESSION|                                           P=0.177N     |                                                    |
|COCH-ARM / FISHERS |                                           P=0.184N     |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 50

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Preputial Gland                                                                                                                  |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  80/100 (80%)             84/100 (84%) |                                                    |
|POLY-3 ADJUSTED (b)|                  84.4%                    88.6%        |                                                    |
|TERMINAL (d)       |                  51/57 (90%)              54/59 (92%)  |                                                    |
|FIRST INCIDENCE    |                  476                      365          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.409      |                                                    |
|POLY 3             |                                           P=0.245      |                                                    |
|POLY 1.5           |                                           P=0.268      |                                                    |
|POLY 6             |                                           P=0.216      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.209      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.291      |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Prostate                                                                                                                         |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  48/100 (48%)             52/100 (52%) |                                                    |
|POLY-3 ADJUSTED (b)|                  52.8%                    59.1%        |                                                    |
|TERMINAL (d)       |                  30/57 (53%)              35/59 (59%)  |                                                    |
|FIRST INCIDENCE    |                  581                      557          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.384      |                                                    |
|POLY 3             |                                           P=0.236      |                                                    |
|POLY 1.5           |                                           P=0.273      |                                                    |
|POLY 6             |                                           P=0.208      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.266      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.336      |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 51

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Prostate                                                                                                                         |
|     Inflammation Acute                                                                                                          |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  4/100 (4%)               14/100 (14%) |                                                    |
|POLY-3 ADJUSTED (b)|                  4.6%                     16.2%        |                                                    |
|TERMINAL (d)       |                  2/57 (4%)                8/59 (14%)   |                                                    |
|FIRST INCIDENCE    |                  527                      489          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.015 *    |                                                    |
|POLY 3             |                                           P=0.011 *    |                                                    |
|POLY 1.5           |                                           P=0.011 *    |                                                    |
|POLY 6             |                                           P=0.012 *    |                                                    |
|LOGISTIC REGRESSION|                                           P=0.015 *    |                                                    |
|COCH-ARM / FISHERS |                                           P=0.012 *    |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Prostate                                                                                                                         |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  42/100 (42%)             47/100 (47%) |                                                    |
|POLY-3 ADJUSTED (b)|                  45.8%                    50.8%        |                                                    |
|TERMINAL (d)       |                  20/57 (35%)              23/59 (39%)  |                                                    |
|FIRST INCIDENCE    |                  476                      306          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.337      |                                                    |
|POLY 3             |                                           P=0.295      |                                                    |
|POLY 1.5           |                                           P=0.294      |                                                    |
|POLY 6             |                                           P=0.299      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.294      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.285      |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 52

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Prostate: Epithelium                                                                                                             |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  10/100 (10%)             12/100 (12%) |                                                    |
|POLY-3 ADJUSTED (b)|                  11.6%                    14.3%        |                                                    |
|TERMINAL (d)       |                  9/57 (16%)               12/59 (20%)  |                                                    |
|FIRST INCIDENCE    |                  701                      736 (T)      |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.443      |                                                    |
|POLY 3             |                                           P=0.387      |                                                    |
|POLY 1.5           |                                           P=0.395      |                                                    |
|POLY 6             |                                           P=0.384      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.447      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.411      |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Salivary Glands: Parotid Gland                                                                                                   |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                0/100 (0%)   |           3/100 (3%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     0.0%         |           3.5%                     2.4%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           2/59 (3%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  ---                      ---          |           553                      641             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           (e)          |                                    P=0.511N        |
|POLY 3             |                                           (e)          |                                    P=0.513N        |
|POLY 1.5           |                                           (e)          |                                    P=0.510N        |
|POLY 6             |                                           (e)          |                                    P=0.511N        |
|LOGISTIC REGRESSION|                                           (e)          |                                    P=0.495N        |
|COCH-ARM / FISHERS |                                           (e)          |                                    P=0.500N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 53

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Seminal Vesicle                                                                                                                  |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  84/100 (84%)             79/100 (79%) |                                                    |
|POLY-3 ADJUSTED (b)|                  87.9%                    82.4%        |                                                    |
|TERMINAL (d)       |                  49/57 (86%)              47/59 (80%)  |                                                    |
|FIRST INCIDENCE    |                  549                      306          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.305N     |                                                    |
|POLY 3             |                                           P=0.177N     |                                                    |
|POLY 1.5           |                                           P=0.186N     |                                                    |
|POLY 6             |                                           P=0.189N     |                                                    |
|LOGISTIC REGRESSION|                                           P=0.275N     |                                                    |
|COCH-ARM / FISHERS |                                           P=0.233N     |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Seminal Vesicle                                                                                                                  |
|     Dilatation                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/100 (0%)               4/100 (4%)   |                                                    |
|POLY-3 ADJUSTED (b)|                  0.0%                     4.8%         |                                                    |
|TERMINAL (d)       |                  0/57 (0%)                3/59 (5%)    |                                                    |
|FIRST INCIDENCE    |                  ---                      715          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.072      |                                                    |
|POLY 3             |                                           P=0.061      |                                                    |
|POLY 1.5           |                                           P=0.062      |                                                    |
|POLY 6             |                                           P=0.061      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.065      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.061      |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 54

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Skin                                                                                                                             |
|     Cyst Epithelial Inclusion                                                                                                   |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                3/100 (3%)   |           0/100 (0%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     3.5%         |           0.0%                     1.2%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  ---                      557          |           ---                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.126      |                                    P=0.497         |
|POLY 3             |                                           P=0.121      |                                    P=0.500         |
|POLY 1.5           |                                           P=0.121      |                                    P=0.500         |
|POLY 6             |                                           P=0.121      |                                    P=0.500         |
|LOGISTIC REGRESSION|                                           P=0.130      |                                    P=0.497         |
|COCH-ARM / FISHERS |                                           P=0.125      |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Spleen                                                                                                                           |
|     Fibrosis                                                                                                                    |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               1/100 (1%)   |           0/100 (0%)               2/99 (2%)       |
|POLY-3 ADJUSTED (b)|                  1.2%                     1.2%         |           0.0%                     2.4%            |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           0/59 (0%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  736 (T)                  736 (T)      |           ---                      701             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.754N     |                                    P=0.244         |
|POLY 3             |                                           P=0.758      |                                    P=0.236         |
|POLY 1.5           |                                           P=0.759      |                                    P=0.236         |
|POLY 6             |                                           P=0.758      |                                    P=0.237         |
|LOGISTIC REGRESSION|                                           P=0.754N     |                                    P=0.234         |
|COCH-ARM / FISHERS |                                           P=0.751N     |                                    P=0.246         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 55

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Spleen                                                                                                                           |
|     Hematopoietic Cell Proliferation                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  14/100 (14%)             16/100 (16%) |           15/100 (15%)             28/99 (28%)     |
|POLY-3 ADJUSTED (b)|                  16.0%                    18.4%        |           16.8%                    32.5%           |
|TERMINAL (d)       |                  7/57 (12%)               8/59 (14%)   |           5/59 (9%)                21/58 (36%)     |
|FIRST INCIDENCE    |                  583                      535          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.425      |                                    P=0.022 *       |
|POLY 3             |                                           P=0.415      |                                    P=0.011 *       |
|POLY 1.5           |                                           P=0.415      |                                    P=0.013 *       |
|POLY 6             |                                           P=0.422      |                                    P=0.010 *       |
|LOGISTIC REGRESSION|                                           P=0.424      |                                    P=0.018 *       |
|COCH-ARM / FISHERS |                                           P=0.422      |                                    P=0.017 *       |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Spleen                                                                                                                           |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  12/100 (12%)             19/100 (19%) |           54/100 (54%)             46/99 (46%)     |
|POLY-3 ADJUSTED (b)|                  13.7%                    21.7%        |           58.5%                    50.0%           |
|TERMINAL (d)       |                  7/57 (12%)               12/59 (20%)  |           36/59 (61%)              26/58 (45%)     |
|FIRST INCIDENCE    |                  476                      365          |           494                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.131      |                                    P=0.228N        |
|POLY 3             |                                           P=0.113      |                                    P=0.150N        |
|POLY 1.5           |                                           P=0.116      |                                    P=0.164N        |
|POLY 6             |                                           P=0.114      |                                    P=0.128N        |
|LOGISTIC REGRESSION|                                           P=0.131      |                                    P=0.175N        |
|COCH-ARM / FISHERS |                                           P=0.120      |                                    P=0.178N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 56

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Spleen: Lymphoid Follicle                                                                                                        |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               3/100 (3%)   |           6/100 (6%)               6/99 (6%)       |
|POLY-3 ADJUSTED (b)|                  1.2%                     3.6%         |           6.8%                     7.0%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  725                      577          |           543                      448             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.311      |                                    P=0.591         |
|POLY 3             |                                           P=0.302      |                                    P=0.603         |
|POLY 1.5           |                                           P=0.304      |                                    P=0.604         |
|POLY 6             |                                           P=0.303      |                                    P=0.606         |
|LOGISTIC REGRESSION|                                           P=0.304      |                                    P=0.483N        |
|COCH-ARM / FISHERS |                                           P=0.311      |                                    P=0.609         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach                                                                                                             |
|     Edema                                                                                                                       |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               6/100 (6%)   |           3/100 (3%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     7.1%         |           3.5%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  674                      557          |           495                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.267      |                                    P=0.134N        |
|POLY 3             |                                           P=0.239      |                                    P=0.130N        |
|POLY 1.5           |                                           P=0.242      |                                    P=0.127N        |
|POLY 6             |                                           P=0.239      |                                    P=0.131N        |
|LOGISTIC REGRESSION|                                           P=0.243      |                                    P=0.079N        |
|COCH-ARM / FISHERS |                                           P=0.249      |                                    P=0.123N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 57

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach                                                                                                             |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               4/100 (4%)   |           1/100 (1%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     4.7%         |           1.2%                     2.4%            |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  527                      555          |           598                      602             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.488      |                                    P=0.491         |
|POLY 3             |                                           P=0.488      |                                    P=0.495         |
|POLY 1.5           |                                           P=0.492      |                                    P=0.496         |
|POLY 6             |                                           P=0.488      |                                    P=0.496         |
|LOGISTIC REGRESSION|                                           P=0.530      |                                    P=0.534         |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.500         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach                                                                                                             |
|     Ulcer                                                                                                                       |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/100 (1%)               7/100 (7%)   |           3/100 (3%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     8.1%         |           3.5%                     1.2%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  647                      535          |           553                      535             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.034 *    |                                    P=0.321N        |
|POLY 3             |                                           P=0.034 *    |                                    P=0.319N        |
|POLY 1.5           |                                           P=0.034 *    |                                    P=0.316N        |
|POLY 6             |                                           P=0.036 *    |                                    P=0.320N        |
|LOGISTIC REGRESSION|                                           P=0.042 *    |                                    P=0.210N        |
|COCH-ARM / FISHERS |                                           P=0.032 *    |                                    P=0.311N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 58

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Forestomach: Epithelium                                                                                                 |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  6/100 (6%)               7/100 (7%)   |           7/100 (7%)               10/100 (10%)    |
|POLY-3 ADJUSTED (b)|                  6.9%                     8.2%         |           7.9%                     11.5%           |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |           0/59 (0%)                2/58 (3%)       |
|FIRST INCIDENCE    |                  527                      535          |           553                      480             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.496      |                                    P=0.293         |
|POLY 3             |                                           P=0.486      |                                    P=0.291         |
|POLY 1.5           |                                           P=0.490      |                                    P=0.295         |
|POLY 6             |                                           P=0.486      |                                    P=0.292         |
|LOGISTIC REGRESSION|                                           P=0.525      |                                    P=0.416         |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.307         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Glandular                                                                                                               |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               0/100 (0%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     0.0%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  649                      ---          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.126N     |                                    (e)             |
|POLY 3             |                                           P=0.128N     |                                    (e)             |
|POLY 1.5           |                                           P=0.126N     |                                    (e)             |
|POLY 6             |                                           P=0.128N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.125N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.123N     |                                    (e)             |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 59

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Glandular                                                                                                               |
|     Edema                                                                                                                       |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/100 (2%)               0/100 (0%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  701                      ---          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.231N     |                                    (e)             |
|POLY 3             |                                           P=0.247N     |                                    (e)             |
|POLY 1.5           |                                           P=0.244N     |                                    (e)             |
|POLY 6             |                                           P=0.247N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.243N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    (e)             |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Glandular                                                                                                               |
|     Erosion Focal                                                                                                               |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  9/100 (9%)               11/100 (11%) |           5/100 (5%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  10.2%                    12.6%        |           5.7%                     3.5%            |
|TERMINAL (d)       |                  0/57 (0%)                1/59 (2%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  527                      527          |           553                      575             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.396      |                                    P=0.372N        |
|POLY 3             |                                           P=0.401      |                                    P=0.379N        |
|POLY 1.5           |                                           P=0.402      |                                    P=0.373N        |
|POLY 6             |                                           P=0.406      |                                    P=0.381N        |
|LOGISTIC REGRESSION|                                           P=0.456      |                                    P=0.269N        |
|COCH-ARM / FISHERS |                                           P=0.407      |                                    P=0.360N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 60

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Stomach, Glandular: Glands                                                                                                       |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  4/100 (4%)               2/100 (2%)   |           12/100 (12%)             12/100 (12%)    |
|POLY-3 ADJUSTED (b)|                  4.7%                     2.4%         |           13.8%                    13.8%           |
|TERMINAL (d)       |                  2/57 (4%)                1/59 (2%)    |           7/59 (12%)               2/58 (3%)       |
|FIRST INCIDENCE    |                  690                      716          |           597                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.321N     |                                    P=0.568         |
|POLY 3             |                                           P=0.353N     |                                    P=0.585         |
|POLY 1.5           |                                           P=0.348N     |                                    P=0.581         |
|POLY 6             |                                           P=0.354N     |                                    P=0.575N        |
|LOGISTIC REGRESSION|                                           P=0.347N     |                                    P=0.561N        |
|COCH-ARM / FISHERS |                                           P=0.341N     |                                    P=0.586N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Testes                                                                                                                           |
|     Mineralization                                                                                                              |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/100 (3%)               1/100 (1%)   |                                                    |
|POLY-3 ADJUSTED (b)|                  3.5%                     1.2%         |                                                    |
|TERMINAL (d)       |                  1/57 (2%)                1/59 (2%)    |                                                    |
|FIRST INCIDENCE    |                  647                      736 (T)      |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.319N     |                                                    |
|POLY 3             |                                           P=0.320N     |                                                    |
|POLY 1.5           |                                           P=0.316N     |                                                    |
|POLY 6             |                                           P=0.323N     |                                                    |
|LOGISTIC REGRESSION|                                           P=0.308N     |                                                    |
|COCH-ARM / FISHERS |                                           P=0.311N     |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 61

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Testes: Germinal Epithelium                                                                                                      |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  10/100 (10%)             13/100 (13%) |                                                    |
|POLY-3 ADJUSTED (b)|                  11.6%                    15.3%        |                                                    |
|TERMINAL (d)       |                  8/57 (14%)               8/59 (14%)   |                                                    |
|FIRST INCIDENCE    |                  647                      570          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.343      |                                                    |
|POLY 3             |                                           P=0.313      |                                                    |
|POLY 1.5           |                                           P=0.318      |                                                    |
|POLY 6             |                                           P=0.317      |                                                    |
|LOGISTIC REGRESSION|                                           P=0.307      |                                                    |
|COCH-ARM / FISHERS |                                           P=0.329      |                                                    |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Testes: Interstitial Cell                                                                                                        |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  11/100 (11%)             24/100 (24%) |                                                    |
|POLY-3 ADJUSTED (b)|                  12.5%                    26.2%        |                                                    |
|TERMINAL (d)       |                  6/57 (11%)               8/59 (14%)   |                                                    |
|FIRST INCIDENCE    |                  502                      365          |                                                    |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.016 *    |                                                    |
|POLY 3             |                                           P=0.016 *    |                                                    |
|POLY 1.5           |                                           P=0.014 *    |                                                    |
|POLY 6             |                                           P=0.020 *    |                                                    |
|LOGISTIC REGRESSION|                                           P=0.017 *    |                                                    |
|COCH-ARM / FISHERS |                                           P=0.012 *    |                                                    |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 62

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thymus                                                                                                                           |
|     Atrophy                                                                                                                     |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  58/97 (60%)              44/95 (46%)  |           51/95 (54%)              43/92 (47%)     |
|POLY-3 ADJUSTED (b)|                  65.2%                    49.9%        |           57.1%                    50.1%           |
|TERMINAL (d)       |                  39/55 (71%)              25/56 (45%)  |           28/56 (50%)              24/57 (42%)     |
|FIRST INCIDENCE    |                  406                      365          |           462                      430             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.053N     |                                    P=0.205N        |
|POLY 3             |                                           P=0.024N*    |                                    P=0.216N        |
|POLY 1.5           |                                           P=0.031N*    |                                    P=0.217N        |
|POLY 6             |                                           P=0.017N*    |                                    P=0.208N        |
|LOGISTIC REGRESSION|                                           P=0.046N*    |                                    P=0.205N        |
|COCH-ARM / FISHERS |                                           P=0.042N*    |                                    P=0.211N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thymus                                                                                                                           |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/97 (1%)                2/95 (2%)    |           1/95 (1%)                2/92 (2%)       |
|POLY-3 ADJUSTED (b)|                  1.2%                     2.5%         |           1.2%                     2.6%            |
|TERMINAL (d)       |                  1/55 (2%)                0/56 (0%)    |           0/56 (0%)                2/57 (4%)       |
|FIRST INCIDENCE    |                  736 (T)                  559          |           736                      737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.496      |                                    P=0.500         |
|POLY 3             |                                           P=0.491      |                                    P=0.493         |
|POLY 1.5           |                                           P=0.492      |                                    P=0.492         |
|POLY 6             |                                           P=0.493      |                                    P=0.496         |
|LOGISTIC REGRESSION|                                           P=0.507      |                                    P=0.501         |
|COCH-ARM / FISHERS |                                           P=0.492      |                                    P=0.488         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 63

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thymus                                                                                                                           |
|     Hemorrhage                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/97 (2%)                0/95 (0%)    |           2/95 (2%)                5/92 (5%)       |
|POLY-3 ADJUSTED (b)|                  2.4%                     0.0%         |           2.4%                     6.2%            |
|TERMINAL (d)       |                  0/55 (0%)                0/56 (0%)    |           0/56 (0%)                1/57 (2%)       |
|FIRST INCIDENCE    |                  695                      ---          |           494                      434             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.233N     |                                    P=0.219         |
|POLY 3             |                                           P=0.256N     |                                    P=0.214         |
|POLY 1.5           |                                           P=0.252N     |                                    P=0.211         |
|POLY 6             |                                           P=0.257N     |                                    P=0.220         |
|LOGISTIC REGRESSION|                                           P=0.246N     |                                    P=0.271         |
|COCH-ARM / FISHERS |                                           P=0.254N     |                                    P=0.209         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thymus: Epithelial Cell                                                                                                          |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/97 (2%)                2/95 (2%)    |           3/95 (3%)                2/92 (2%)       |
|POLY-3 ADJUSTED (b)|                  2.4%                     2.5%         |           3.7%                     2.5%            |
|TERMINAL (d)       |                  1/55 (2%)                1/56 (2%)    |           2/56 (4%)                1/57 (2%)       |
|FIRST INCIDENCE    |                  725                      586          |           602                      591             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.691      |                                    P=0.502N        |
|POLY 3             |                                           P=0.682      |                                    P=0.517N        |
|POLY 1.5           |                                           P=0.683      |                                    P=0.519N        |
|POLY 6             |                                           P=0.683      |                                    P=0.509N        |
|LOGISTIC REGRESSION|                                           P=0.682      |                                    P=0.512N        |
|COCH-ARM / FISHERS |                                           P=0.682      |                                    P=0.515N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 64

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland                                                                                                                    |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/99 (2%)                0/100 (0%)   |           0/100 (0%)               0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           0.0%                     0.0%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  627                      ---          |           ---                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.248N     |                                    (e)             |
|POLY 3             |                                           P=0.245N     |                                    (e)             |
|POLY 1.5           |                                           P=0.241N     |                                    (e)             |
|POLY 6             |                                           P=0.247N     |                                    (e)             |
|LOGISTIC REGRESSION|                                           P=0.234N     |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.246N     |                                    (e)             |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland                                                                                                                    |
|     Ultimobranchial Cyst                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                3/100 (3%)   |           2/100 (2%)               3/100 (3%)      |
|POLY-3 ADJUSTED (b)|                  1.2%                     3.6%         |           2.3%                     3.5%            |
|TERMINAL (d)       |                  0/57 (0%)                3/59 (5%)    |           2/59 (3%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  701                      736 (T)      |           737 (T)                  526             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.321      |                                    P=0.491         |
|POLY 3             |                                           P=0.302      |                                    P=0.497         |
|POLY 1.5           |                                           P=0.305      |                                    P=0.497         |
|POLY 6             |                                           P=0.301      |                                    P=0.501         |
|LOGISTIC REGRESSION|                                           P=0.305      |                                    P=0.511         |
|COCH-ARM / FISHERS |                                           P=0.314      |                                    P=0.500         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 65

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/99 (0%)                2/100 (2%)   |           18/100 (18%)             0/100 (0%)      |
|POLY-3 ADJUSTED (b)|                  0.0%                     2.4%         |           20.7%                    0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                2/59 (3%)    |           13/59 (22%)              0/58 (0%)       |
|FIRST INCIDENCE    |                  ---                      736 (T)      |           598                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.246      |                                    P<0.001N**      |
|POLY 3             |                                           P=0.237      |                                    P<0.001N**      |
|POLY 1.5           |                                           P=0.238      |                                    P<0.001N**      |
|POLY 6             |                                           P=0.236      |                                    P<0.001N**      |
|LOGISTIC REGRESSION|                                           P=0.246      |                                    P<0.001N**      |
|COCH-ARM / FISHERS |                                           P=0.251      |                                    P<0.001N**      |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Hyperplasia Diffuse                                                                                                         |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  4/99 (4%)                0/100 (0%)   |           2/100 (2%)               2/100 (2%)      |
|POLY-3 ADJUSTED (b)|                  4.7%                     0.0%         |           2.3%                     2.4%            |
|TERMINAL (d)       |                  3/57 (5%)                0/59 (0%)    |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                  661                      ---          |           655                      628             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.063N     |                                    P=0.689         |
|POLY 3             |                                           P=0.066N     |                                    P=0.688         |
|POLY 1.5           |                                           P=0.065N     |                                    P=0.689         |
|POLY 6             |                                           P=0.067N     |                                    P=0.690         |
|LOGISTIC REGRESSION|                                           P=0.066N     |                                    P=0.691N        |
|COCH-ARM / FISHERS |                                           P=0.059N     |                                    P=0.689N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 66

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: C-Cell                                                                                                            |
|     Hyperplasia Focal                                                                                                           |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  29/99 (29%)              31/100 (31%) |           20/100 (20%)             30/100 (30%)    |
|POLY-3 ADJUSTED (b)|                  33.4%                    35.9%        |           23.1%                    35.3%           |
|TERMINAL (d)       |                  23/57 (40%)              21/59 (36%)  |           15/59 (25%)              23/58 (40%)     |
|FIRST INCIDENCE    |                  579                      570          |           553                      575             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.473      |                                    P=0.065         |
|POLY 3             |                                           P=0.427      |                                    P=0.053         |
|POLY 1.5           |                                           P=0.435      |                                    P=0.057         |
|POLY 6             |                                           P=0.436      |                                    P=0.052         |
|LOGISTIC REGRESSION|                                           P=0.401      |                                    P=0.056         |
|COCH-ARM / FISHERS |                                           P=0.457      |                                    P=0.071         |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Thyroid Gland: Follicle                                                                                                          |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  3/99 (3%)                3/100 (3%)   |           1/100 (1%)               1/100 (1%)      |
|POLY-3 ADJUSTED (b)|                  3.5%                     3.6%         |           1.2%                     1.2%            |
|TERMINAL (d)       |                  3/57 (5%)                2/59 (3%)    |           1/59 (2%)                1/58 (2%)       |
|FIRST INCIDENCE    |                  736 (T)                  535          |           737 (T)                  737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.648N     |                                    P=0.757         |
|POLY 3             |                                           P=0.658      |                                    P=0.758         |
|POLY 1.5           |                                           P=0.660      |                                    P=0.759         |
|POLY 6             |                                           P=0.659      |                                    P=0.759         |
|LOGISTIC REGRESSION|                                           P=0.658      |                                    P=0.757         |
|COCH-ARM / FISHERS |                                           P=0.654N     |                                    P=0.751N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 67

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Tooth                                                                                                                            |
|     Malformation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  0/2 (0%)                 5/6 (83%)    |           1/2 (50%)                0/1 (0%)        |
|POLY-3 ADJUSTED (b)|                  0.0%                     83.3%        |           64.7%                    0.0%            |
|TERMINAL (d)       |                  0/1 (0%)                 3/4 (75%)    |           1/1 (100%)               0/0 (0%)        |
|FIRST INCIDENCE    |                  ---                      557          |           737 (T)                  ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.103      |                                    P=1.000N        |
|POLY 3             |                                           P=0.020 *    |                                    P=0.682N        |
|POLY 1.5           |                                           P=0.017 *    |                                    P=0.697N        |
|POLY 6             |                                           P=0.028 *    |                                    P=0.670N        |
|LOGISTIC REGRESSION|                                           P=0.114      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.107      |                                    P=0.667N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Trachea                                                                                                                          |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  11/100 (11%)             12/100 (12%) |           6/100 (6%)               5/100 (5%)      |
|POLY-3 ADJUSTED (b)|                  12.7%                    14.2%        |           7.0%                     6.0%            |
|TERMINAL (d)       |                  8/57 (14%)               9/59 (15%)   |           4/59 (7%)                3/58 (5%)       |
|FIRST INCIDENCE    |                  617                      666          |           646                      653             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.527      |                                    P=0.515N        |
|POLY 3             |                                           P=0.473      |                                    P=0.517N        |
|POLY 1.5           |                                           P=0.482      |                                    P=0.513N        |
|POLY 6             |                                           P=0.469      |                                    P=0.516N        |
|LOGISTIC REGRESSION|                                           P=0.479      |                                    P=0.513N        |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.500N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 68

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Urinary Bladder                                                                                                                  |
|     Edema                                                                                                                       |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  2/99 (2%)                0/99 (0%)    |           1/99 (1%)                0/96 (0%)       |
|POLY-3 ADJUSTED (b)|                  2.3%                     0.0%         |           1.2%                     0.0%            |
|TERMINAL (d)       |                  1/57 (2%)                0/59 (0%)    |           0/59 (0%)                0/57 (0%)       |
|FIRST INCIDENCE    |                  527                      ---          |           674                      ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.236N     |                                    P=0.503N        |
|POLY 3             |                                           P=0.249N     |                                    P=0.520N        |
|POLY 1.5           |                                           P=0.245N     |                                    P=0.518N        |
|POLY 6             |                                           P=0.251N     |                                    P=0.519N        |
|LOGISTIC REGRESSION|                                           P=0.223N     |                                    P=0.501N        |
|COCH-ARM / FISHERS |                                           P=0.249N     |                                    P=0.508N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Urinary Bladder                                                                                                                  |
|     Infiltration Cellular Lymphocyte                                                                                            |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  4/99 (4%)                7/99 (7%)    |           10/99 (10%)              10/96 (10%)     |
|POLY-3 ADJUSTED (b)|                  4.7%                     8.4%         |           11.8%                    12.2%           |
|TERMINAL (d)       |                  4/57 (7%)                5/59 (9%)    |           9/59 (15%)               8/57 (14%)      |
|FIRST INCIDENCE    |                  736 (T)                  677          |           710                      505             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.287      |                                    P=0.566         |
|POLY 3             |                                           P=0.256      |                                    P=0.559         |
|POLY 1.5           |                                           P=0.260      |                                    P=0.559         |
|POLY 6             |                                           P=0.257      |                                    P=0.566         |
|LOGISTIC REGRESSION|                                           P=0.261      |                                    P=0.558         |
|COCH-ARM / FISHERS |                                           P=0.269      |                                    P=0.564         |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 69

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Urinary Bladder: Transitional Epithelium                                                                                         |
|     Hyperplasia                                                                                                                 |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                  1/99 (1%)                2/99 (2%)    |           2/99 (2%)                0/96 (0%)       |
|POLY-3 ADJUSTED (b)|                  1.2%                     2.4%         |           2.4%                     0.0%            |
|TERMINAL (d)       |                  0/57 (0%)                0/59 (0%)    |           2/59 (3%)                0/57 (0%)       |
|FIRST INCIDENCE    |                  579                      306          |           737 (T)                  ---             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                           P=0.479      |                                    P=0.246N        |
|POLY 3             |                                           P=0.497      |                                    P=0.254N        |
|POLY 1.5           |                                           P=0.498      |                                    P=0.253N        |
|POLY 6             |                                           P=0.497      |                                    P=0.252N        |
|LOGISTIC REGRESSION|                                           P=0.570      |                                    (e)             |
|COCH-ARM / FISHERS |                                           P=0.500      |                                    P=0.256N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus                                                                                                                           |
|     Hydrometra                                                                                                                  |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           9/100 (9%)               6/99 (6%)       |
|POLY-3 ADJUSTED (b)|                                                        |           10.4%                    7.2%            |
|TERMINAL (d)       |                                                        |           7/59 (12%)               5/58 (9%)       |
|FIRST INCIDENCE    |                                                        |           462                      653             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.309N        |
|POLY 3             |                                                        |                                    P=0.322N        |
|POLY 1.5           |                                                        |                                    P=0.318N        |
|POLY 6             |                                                        |                                    P=0.319N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.312N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.303N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 70

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus                                                                                                                           |
|     Pigmentation                                                                                                                |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           2/100 (2%)               1/99 (1%)       |
|POLY-3 ADJUSTED (b)|                                                        |           2.3%                     1.2%            |
|TERMINAL (d)       |                                                        |           1/59 (2%)                0/58 (0%)       |
|FIRST INCIDENCE    |                                                        |           565                      668             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.509N        |
|POLY 3             |                                                        |                                    P=0.514N        |
|POLY 1.5           |                                                        |                                    P=0.512N        |
|POLY 6             |                                                        |                                    P=0.512N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.483N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.504N        |
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus: Cervix                                                                                                                   |
|     Inflammation Chronic                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           2/100 (2%)               1/99 (1%)       |
|POLY-3 ADJUSTED (b)|                                                        |           2.3%                     1.2%            |
|TERMINAL (d)       |                                                        |           2/59 (3%)                1/58 (2%)       |
|FIRST INCIDENCE    |                                                        |           737 (T)                  737 (T)         |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.506N        |
|POLY 3             |                                                        |                                    P=0.513N        |
|POLY 1.5           |                                                        |                                    P=0.511N        |
|POLY 6             |                                                        |                                    P=0.510N        |
|LOGISTIC REGRESSION|                                                        |                                    P=0.506N        |
|COCH-ARM / FISHERS |                                                        |                                    P=0.504N        |
|=================================================================================================================================|
       Date:  01/28/98                           EXPERIMENT: 89029 TEST: 05                                            Page 71

Statistical Analysis of Non-neoplastic Lesions in       Rats(FISCHER 344)  -                MAGNETIC FIELDS (EMF)
                                         Terminal Sacrifice at 105 weeks 
|=================================================================================================================================|
|                   |                                                        |                                                    |
|                   |                              Males                     |                       Females                      |
|Dose               |                  SHAM                     10 GAUSS     |           SHAM                     10 GAUSS        |
|                   |                  CONTROL                   INTER.      |           CONTROL                   INTER.         |
|=================================================================================================================================|
|                                                                                                                                 |
|Uterus: Endometrium                                                                                                              |
|     Cyst                                                                                                                        |
|                                                                                                                                 |
|                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------|
|TUMOR RATES        |                                                        |                                                    |
|-----------        |                                                        |                                                    |
|OVERALL (a)        |                                                        |           3/100 (3%)               9/99 (9%)       |
|POLY-3 ADJUSTED (b)|                                                        |           3.5%                     10.6%           |
|TERMINAL (d)       |                                                        |           3/59 (5%)                4/58 (7%)       |
|FIRST INCIDENCE    |                                                        |           737 (T)                  535             |
|-------------------|                                                        |                                                    |
|STATISTICAL TESTS  |                                                        |                                                    |
|-------------------|                                                        |                                                    |
|LIFE TABLE         |                                                        |                                    P=0.068         |
|POLY 3             |                                                        |                                    P=0.064         |
|POLY 1.5           |                                                        |                                    P=0.063         |
|POLY 6             |                                                        |                                    P=0.067         |
|LOGISTIC REGRESSION|                                                        |                                    P=0.063         |
|COCH-ARM / FISHERS |                                                        |                                    P=0.065         |
|=================================================================================================================================|

(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).
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.