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TDMS Study 89029-05 Pathology Tables

NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10

                                                    MERGED REPORTS FINAL #3




       Facility:  I. I. T. Research Institute

       Chemical CAS #:  ELECTROMAG

       Lock Date:  09/04/97

       Cage Range:  All

       Reasons For Removal:    All

       Removal Date Range:     All

       Treatment Groups:       Merge     001   001,011                  SHAM     CONTROL
                               Merge     002   002,012                  SHAM     CONTROL
                               Merge     003   003,013                  .02      GAUSS
                               Merge     004   004,014                  .02      GAUSS
                               Merge     005   005,015                  2 GAUSS
                               Merge     006   006,016                  2 GAUSS
                               Merge     007   009,019                  10 GAUSS
                               Merge     008   010,020                  10 GAUSS
                               Merge     009   007,017                  10 GAUSS   INTER
                               Merge     010   008,018                  10 GAUSS   INTER

























a  Number of animals examined microscopically at site and number of animals with lesion

                                                              Page   1


NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________

DISPOSITION SUMMARY                                                                                                                 

  Animals Initially In Study                         100          100          100          100          100                        
  Early Deaths                                                                                                                      
    Natural Death                                     18           17           18           19           19                        
    Moribund Sacrifice                                22           15           22           18           23                        
  Survivors                                                                                                                         
    Terminal Sacrifice                                58           66           60           59           58                        
    Natural Death                                                   1                         1                                     
    Moribund Sacrifice                                 1            1                         1                                     
  Other                                                1                                      2                                     

  Animals Examined Microscopically                   100          100          100          100          100                        
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Intestine Large, Colon                             (100)        (100)        (100)        (100)        (97)                      
      Inflammation, Chronic Active                                                            1 (1%)                                
   Intestine Large, Rectum                            (99)         (100)        (100)        (99)         (100)                     
      Inflammation, Chronic                                                                                1 (1%)                   
      Inflammation, Chronic Active                                                            1 (1%)                                
   Intestine Large, Cecum                             (100)        (98)         (99)         (100)        (96)                      
      Epithelium, Hyperplasia                                                                              1 (1%)                   
   Intestine Small, Duodenum                          (97)         (97)         (96)         (100)        (96)                      
      Diverticulum                                                                                         1 (1%)                   
      Ectopic Tissue                                                             1 (1%)       1 (1%)                                
   Intestine Small, Ileum                             (94)         (91)         (93)         (97)         (91)                      
      Ulcer                                                                                                1 (1%)                   
      Peyer's Patch, Hyperplasia, Lymphoid                                                    2 (2%)                                
      Serosa, Inflammation, Chronic                    1 (1%)                                                                       
   Liver                                              (100)        (100)        (100)        (100)        (100)                     
      Angiectasis, Focal                               1 (1%)       1 (1%)       2 (2%)       3 (3%)                                
      Basophilic Focus                                66 (66%)     82 (82%)     77 (77%)     66 (66%)     78 (78%)                  
      Clear Cell Focus                                 6 (6%)      13 (13%)     18 (18%)     13 (13%)     18 (18%)                  
      Congestion                                                                                           1 (1%)                   
      Eosinophilic Focus                              18 (18%)     24 (24%)     30 (30%)     24 (24%)     31 (31%)                  
      Fibrosis                                         2 (2%)                    1 (1%)       1 (1%)       1 (1%)                   
      Hematopoietic Cell Proliferation                 6 (6%)       3 (3%)       2 (2%)       4 (4%)       2 (2%)                   
      Hepatodiaphragmatic Nodule                       8 (8%)       4 (4%)       4 (4%)       5 (5%)       6 (6%)                   
      Infiltration Cellular, Lymphocyte                1 (1%)       1 (1%)       4 (4%)                    2 (2%)                   
      Infiltration Cellular, Histiocyte                                                       2 (2%)       1 (1%)                   
      Infiltration Cellular, Mixed Cell               32 (32%)     40 (40%)     37 (37%)     28 (28%)     27 (27%)                  
      Inflammation, Chronic                            1 (1%)       1 (1%)       2 (2%)       2 (2%)       2 (2%)                   
      Inflammation, Chronic Active                                               1 (1%)                                             
      Inflammation, Granulomatous                                                                          2 (2%)                   
      Mixed Cell Focus                                39 (39%)     45 (45%)     49 (49%)     42 (42%)     37 (37%)                  
      Necrosis                                         3 (3%)       4 (4%)       7 (7%)       4 (4%)       4 (4%)                   

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    2                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Pigmentation                                                               1 (1%)                                             
      Tension Lipidosis, Focal                                                   1 (1%)       1 (1%)       1 (1%)                   
      Bile Duct, Hyperplasia                          28 (28%)     20 (20%)     31 (31%)     21 (21%)     24 (24%)                  
      Hepatocyte, Hypertrophy                                                    1 (1%)                                             
      Hepatocyte, Vacuolization Cytoplasmic           11 (11%)     12 (12%)      9 (9%)      11 (11%)      9 (9%)                   
   Mesentery                                          (11)         (6)          (5)          (13)         (16)                      
      Accessory Spleen                                 1 (9%)                                 1 (8%)                                
      Fat, Necrosis                                    9 (82%)      4 (67%)      4 (80%)     10 (77%)     15 (94%)                  
   Pancreas                                           (100)        (100)        (99)         (100)        (99)                      
      Infiltration Cellular, Lymphocyte               14 (14%)     10 (10%)      9 (9%)       9 (9%)       7 (7%)                   
      Metaplasia, Hepatocyte                                                     2 (2%)                                             
      Acinus, Atrophy, Diffuse                                      3 (3%)       1 (1%)       2 (2%)                                
      Acinus, Atrophy, Focal                          15 (15%)     18 (18%)     26 (26%)     16 (16%)     20 (20%)                  
      Acinus, Basophilic Focus                                                   2 (2%)                                             
      Acinus, Hyperplasia, Focal                       3 (3%)       5 (5%)       5 (5%)       1 (1%)       2 (2%)                   
      Artery, Inflammation, Chronic                                              1 (1%)                                             
      Duct, Hyperplasia                                                          1 (1%)       1 (1%)                                
   Salivary Glands                                    (100)        (99)         (100)        (100)        (100)                     
      Pigmentation                                                  1 (1%)                                                          
      Duct, Parotid Gland, Hyperplasia                                           1 (1%)                                             
      Duct, Parotid Gland, Mineralization              1 (1%)                                                                       
      Duct, Sublingual Gland, Metaplasia, Squamous                  1 (1%)                                 2 (2%)                   
      Parotid Gland, Atrophy                           3 (3%)       2 (2%)       3 (3%)       2 (2%)       2 (2%)                   
      Parotid Gland, Hyperplasia                       1 (1%)       1 (1%)                                                          
      Parotid Gland, Inflammation, Acute                                         1 (1%)                                             
      Parotid Gland, Inflammation, Chronic                                                    1 (1%)                                
      Sublingual Gland, Atrophy                        1 (1%)                    1 (1%)       1 (1%)       1 (1%)                   
      Sublingual Gland, Infiltration Cellular,                                                                                      
           Lymphocyte                                               1 (1%)                                                          
      Sublingual Gland, Metaplasia, Squamous                        1 (1%)                                                          
      Submandibular Gland, Infiltration Cellular,                                                                                   
           Lymphocyte                                                                         1 (1%)                                
   Stomach, Forestomach                               (100)        (99)         (99)         (100)        (100)                     
      Edema                                            3 (3%)                    1 (1%)       3 (3%)                                
      Erosion, Focal                                                                                       1 (1%)                   
      Inflammation, Acute                              1 (1%)                    1 (1%)                    1 (1%)                   
      Inflammation, Chronic                                         1 (1%)       1 (1%)                                             
      Inflammation, Chronic Active                     1 (1%)                                              2 (2%)                   
      Ulcer                                            3 (3%)       1 (1%)                    3 (3%)       1 (1%)                   
      Epithelium, Hyperplasia                          7 (7%)       2 (2%)                    3 (3%)      10 (10%)                  
   Stomach, Glandular                                 (100)        (100)        (99)         (100)        (100)                     
      Edema                                                                      1 (1%)       1 (1%)                                
      Erosion, Focal                                   5 (5%)       2 (2%)       2 (2%)       5 (5%)       3 (3%)                   
      Fibrosis                                                                                1 (1%)                                
      Inflammation, Chronic Active                                                                         1 (1%)                   
      Metaplasia, Focal, Squamous                      1 (1%)                                                                       
      Necrosis, Focal                                  1 (1%)                                                                       

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    3                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Glands, Congestion                                                         1 (1%)                                             
      Glands, Cyst                                    12 (12%)     20 (20%)     26 (26%)     12 (12%)     12 (12%)                  
      Muscularis, Mineralization                                                 1 (1%)                                             
   Tongue                                                          (1)          (1)          (2)          (1)                       
      Epithelium, Hyperplasia, Focal                                1 (100%)     1 (100%)     1 (50%)      1 (100%)                 
   Tooth                                              (2)          (1)          (1)          (1)          (1)                       
      Inflammation, Chronic                                                      1 (100%)                                           
      Malformation                                     1 (50%)                   1 (100%)                                           
      Necrosis                                                                                             1 (100%)                 
      Gingiva, Inflammation, Chronic Active                                                   1 (100%)                              
      Peridontal Tissue, Inflammation, Chronic                                                                                      
          Active                                       1 (50%)                                                                      
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (99)         (100)        (100)        (100)        (100)                     
      Inflammation, Chronic                                                      1 (1%)                                             
   Heart                                              (100)        (100)        (100)        (100)        (100)                     
      Cardiomyopathy                                  53 (53%)     71 (71%)     64 (64%)     61 (61%)     60 (60%)                  
      Artery, Inflammation, Chronic                                              1 (1%)                                             
      Atrium, Mineralization                                                                               1 (1%)                   
      Atrium, Thrombosis                               1 (1%)                    2 (2%)                                             
      Endocardium, Inflammation, Chronic               1 (1%)                                                                       
      Myocardium, Fibrosis, Focal                      1 (1%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (100)        (100)        (100)        (100)        (100)                     
      Angiectasis                                      1 (1%)       4 (4%)       4 (4%)       1 (1%)       5 (5%)                   
      Degeneration                                     1 (1%)                    1 (1%)                                             
      Hematopoietic Cell Proliferation                              1 (1%)       2 (2%)       4 (4%)       2 (2%)                   
      Hemorrhage                                                    1 (1%)                                                          
      Hyperplasia, Focal                              11 (11%)     23 (23%)     12 (12%)      8 (8%)      15 (15%)                  
      Hypertrophy, Focal                               3 (3%)                    1 (1%)       5 (5%)       1 (1%)                   
      Infiltration Cellular, Lymphocyte                1 (1%)                                                                       
      Inflammation, Chronic                            1 (1%)                                                                       
      Mineralization                                                             1 (1%)                    1 (1%)                   
      Necrosis                                         1 (1%)       2 (2%)                    1 (1%)       1 (1%)                   
      Vacuolization Cytoplasmic, Diffuse                            1 (1%)                    2 (2%)       1 (1%)                   
      Vacuolization Cytoplasmic, Focal                27 (27%)     27 (27%)     24 (24%)     31 (31%)     24 (24%)                  
      Bilateral, Angiectasis                          57 (57%)     51 (51%)     46 (46%)     58 (58%)     57 (57%)                  
      Bilateral, Hematopoietic Cell Proliferation      2 (2%)       3 (3%)       4 (4%)                    2 (2%)                   
      Bilateral, Hyperplasia, Focal                                 1 (1%)                    2 (2%)       1 (1%)                   
      Bilateral, Infiltration Cellular, Lymphocyte                  1 (1%)                                                          
      Bilateral, Infiltration Cellular, Mixed Cell                  1 (1%)       1 (1%)                                             

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    4                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ENDOCRINE SYSTEM - CONT                                                                                                             
      Bilateral, Inflammation, Chronic                              1 (1%)       1 (1%)                                             
      Bilateral, Necrosis                                           1 (1%)                                 1 (1%)                   
      Bilateral, Pigmentation                          2 (2%)                    2 (2%)                                             
      Bilateral, Vacuolization Cytoplasmic, Diffuse                              1 (1%)                                             
      Bilateral, Vacuolization Cytoplasmic, Focal      2 (2%)       3 (3%)       2 (2%)       3 (3%)       3 (3%)                   
   Adrenal Medulla                                    (96)         (94)         (94)         (98)         (97)                      
      Hyperplasia, Focal                               6 (6%)       6 (6%)       4 (4%)       7 (7%)       4 (4%)                   
      Bilateral, Hyperplasia, Focal                                                                        1 (1%)                   
      Bilateral, Infiltration Cellular, Lymphocyte                  1 (1%)                    1 (1%)                                
      Bilateral, Necrosis                                                                                  1 (1%)                   
   Islets, Pancreatic                                 (100)        (100)        (99)         (100)        (99)                      
      Hyperplasia, Focal                                            1 (1%)                                 1 (1%)                   
   Parathyroid Gland                                  (88)         (94)         (91)         (88)         (92)                      
      Cyst                                                                                    1 (1%)       1 (1%)                   
      Degeneration                                                                                         1 (1%)                   
      Hyperplasia, Focal                                                                      1 (1%)                                
   Pineal Gland                                       (85)         (90)         (85)         (90)         (89)                      
      Fibrosis                                         1 (1%)                                                                       
      Infiltration Cellular, Lymphocyte                                                                    1 (1%)                   
      Mineralization                                  56 (66%)     54 (60%)     57 (67%)     54 (60%)     40 (45%)                  
   Pituitary Gland                                    (99)         (99)         (98)         (98)         (98)                      
      Pars Distalis, Angiectasis                       1 (1%)                    1 (1%)                                             
      Pars Distalis, Angiectasis, Focal                1 (1%)       9 (9%)       5 (5%)       3 (3%)       2 (2%)                   
      Pars Distalis, Cyst                             21 (21%)     21 (21%)     19 (19%)     28 (29%)     25 (26%)                  
      Pars Distalis, Degeneration, Focal                                                                   1 (1%)                   
      Pars Distalis, Hyperplasia, Diffuse              1 (1%)                                                                       
      Pars Distalis, Hyperplasia, Focal               10 (10%)      9 (9%)       6 (6%)       6 (6%)       7 (7%)                   
      Pars Distalis, Hypertrophy, Focal                                                       1 (1%)       1 (1%)                   
      Pars Distalis, Inflammation, Chronic                          2 (2%)                    1 (1%)       1 (1%)                   
      Pars Distalis, Pigmentation                      2 (2%)       1 (1%)                    2 (2%)       1 (1%)                   
      Pars Intermedia, Hyperplasia, Focal              1 (1%)       1 (1%)                    1 (1%)                                
      Rathke's Cleft, Cyst                             2 (2%)                                 2 (2%)                                
      Rathke's Cleft, Hemorrhage                                    1 (1%)                                                          
      Rathke's Cleft, Pigmentation                     1 (1%)                                 1 (1%)       1 (1%)                   
   Thyroid Gland                                      (100)        (100)        (100)        (100)        (100)                     
      Infiltration Cellular, Lymphocyte                1 (1%)                                                                       
      Ultimobranchial Cyst                             2 (2%)       4 (4%)       7 (7%)       3 (3%)       3 (3%)                   
      C-Cell, Hyperplasia                             18 (18%)                                5 (5%)                                
      C-Cell, Hyperplasia, Diffuse                     2 (2%)       1 (1%)                    3 (3%)       2 (2%)                   
      C-Cell, Hyperplasia, Focal                      20 (20%)     39 (39%)     52 (52%)     24 (24%)     30 (30%)                  
      Follicle, Cyst                                   1 (1%)                    1 (1%)       1 (1%)       1 (1%)                   
      Follicular Cell, Hyperplasia, Focal              1 (1%)                                 1 (1%)                                
____________________________________________________________________________________________________________________________________

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    5                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   None                                                                                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Clitoral Gland                                     (90)         (96)         (97)         (96)         (94)                      
      Cyst                                             1 (1%)                    7 (7%)       1 (1%)       3 (3%)                   
      Hyperplasia, Focal                               6 (7%)       4 (4%)       3 (3%)       5 (5%)       5 (5%)                   
      Inflammation, Acute                              1 (1%)                                              1 (1%)                   
      Inflammation, Chronic                           15 (17%)      9 (9%)      13 (13%)     23 (24%)     12 (13%)                  
      Inflammation, Chronic Active                                  7 (7%)       2 (2%)       5 (5%)       1 (1%)                   
      Bilateral, Atrophy                               1 (1%)                                                                       
      Bilateral, Inflammation, Chronic                 8 (9%)       2 (2%)       4 (4%)       2 (2%)       7 (7%)                   
      Bilateral, Inflammation, Chronic Active          2 (2%)       2 (2%)                                                          
   Ovary                                              (100)        (100)        (100)        (100)        (99)                      
      Inflammation, Chronic                            1 (1%)       1 (1%)       1 (1%)                    2 (2%)                   
      Mineralization                                                             1 (1%)                                             
      Bilateral, Atrophy                               1 (1%)       2 (2%)       1 (1%)                                             
      Bilateral, Inflammation, Chronic                 3 (3%)       2 (2%)       3 (3%)       1 (1%)       2 (2%)                   
      Bilateral, Pigmentation                                                    2 (2%)                                             
      Bilateral, Periovarian Tissue, Cyst                           2 (2%)                                                          
      Bilateral, Follicle, Cyst                                                  1 (1%)                                             
      Bilateral, Rete Ovarii, Hyperplasia              3 (3%)       2 (2%)       3 (3%)       1 (1%)       3 (3%)                   
      Follicle, Cyst                                   3 (3%)       5 (5%)       1 (1%)       4 (4%)       2 (2%)                   
      Interstitial Cell, Hyperplasia                                1 (1%)                                                          
      Periovarian Tissue, Cyst                         6 (6%)       6 (6%)      12 (12%)      8 (8%)      11 (11%)                  
      Rete Ovarii, Hyperplasia                         5 (5%)      14 (14%)      5 (5%)      14 (14%)     13 (13%)                  
   Uterus                                             (100)        (100)        (100)        (100)        (99)                      
      Hemorrhage                                                    1 (1%)                    2 (2%)                                
      Hydrometra                                       9 (9%)      10 (10%)      8 (8%)       7 (7%)       6 (6%)                   
      Pigmentation                                     2 (2%)                    1 (1%)       1 (1%)       1 (1%)                   
      Cervix, Cyst                                                                                         2 (2%)                   
      Cervix, Inflammation, Chronic Active             2 (2%)                    1 (1%)       1 (1%)       1 (1%)                   
      Cervix, Epithelium, Vacuolization Cytoplasmic                                                        1 (1%)                   
      Endometrium, Angiectasis, Focal                                                         1 (1%)                                
      Endometrium, Cyst                                3 (3%)       3 (3%)       4 (4%)       1 (1%)       9 (9%)                   
      Endometrium, Cytoplasmic Alteration              1 (1%)                                                                       
      Endometrium, Fibrosis                            1 (1%)       1 (1%)                    2 (2%)                                
      Endometrium, Hyperplasia                                                                1 (1%)                                
      Endometrium, Inflammation, Acute                                           1 (1%)                                             
      Endometrium, Inflammation, Chronic               1 (1%)       3 (3%)       3 (3%)                    1 (1%)                   
      Endometrium, Inflammation, Chronic Active                                               2 (2%)                                
      Endometrium, Pigmentation                                                  2 (2%)                    1 (1%)                   
      Endometrium, Epithelium, Hyperplasia                          1 (1%)                                 1 (1%)                   
      Serosa, Fibrosis                                 1 (1%)                                                                       

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    6                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
GENITAL SYSTEM - CONT                                                                                                               
   Vagina                                                          (1)          (1)          (2)          (2)                       
      Cyst                                                                                                 1 (50%)                  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
   Bone Marrow                                        (100)        (100)        (100)        (100)        (100)                     
      Depletion Cellular                               9 (9%)       5 (5%)       6 (6%)       4 (4%)      11 (11%)                  
      Hyperplasia                                     13 (13%)     19 (19%)     13 (13%)     12 (12%)     17 (17%)                  
      Inflammation, Chronic                            1 (1%)                                                                       
      Myelofibrosis                                    1 (1%)       1 (1%)                                                          
   Lymph Node                                         (16)         (5)          (5)          (10)         (18)                      
      Pigmentation                                     2 (13%)                                                                      
      Inguinal, Degeneration, Cystic                                1 (20%)                                                         
      Inguinal, Hyperplasia, Lymphoid                  1 (6%)       1 (20%)                                                         
      Mediastinal, Hemorrhage                          1 (6%)       1 (20%)                   1 (10%)      3 (17%)                  
      Mediastinal, Pigmentation                        1 (6%)                    1 (20%)                                            
      Pancreatic, Infiltration Cellular, Histiocyte                              1 (20%)                                            
   Lymph Node, Mandibular                             (100)        (99)         (100)        (100)        (100)                     
      Atrophy                                                       1 (1%)                                                          
      Congestion                                                                              2 (2%)                                
      Degeneration, Cystic                            11 (11%)     19 (19%)      4 (4%)       8 (8%)      15 (15%)                  
      Hemorrhage                                       1 (1%)       2 (2%)       3 (3%)       2 (2%)       3 (3%)                   
      Hyperplasia, Lymphoid                           13 (13%)     21 (21%)     11 (11%)      7 (7%)       7 (7%)                   
      Infiltration Cellular, Histiocyte                3 (3%)       1 (1%)       2 (2%)       1 (1%)                                
      Pigmentation                                                               2 (2%)       2 (2%)       3 (3%)                   
   Lymph Node, Mesenteric                             (100)        (99)         (99)         (99)         (99)                      
      Angiectasis                                                                             1 (1%)                                
      Degeneration, Cystic                             2 (2%)       1 (1%)       1 (1%)                                             
      Hemorrhage                                       3 (3%)       3 (3%)       2 (2%)       4 (4%)       4 (4%)                   
      Hyperplasia, Lymphoid                            1 (1%)                    2 (2%)                                             
      Infiltration Cellular, Histiocyte               85 (85%)     92 (93%)     86 (87%)     87 (88%)     86 (87%)                  
   Spleen                                             (100)        (100)        (100)        (100)        (99)                      
      Congestion                                                    1 (1%)       1 (1%)                                             
      Depletion Cellular, Focal                        1 (1%)       1 (1%)       2 (2%)                                             
      Fibrosis                                                                   1 (1%)                    2 (2%)                   
      Hematopoietic Cell Proliferation                15 (15%)     15 (15%)     20 (20%)     13 (13%)     28 (28%)                  
      Infiltration Cellular, Histiocyte                2 (2%)                                                                       
      Pigmentation                                    54 (54%)     48 (48%)     56 (56%)     57 (57%)     46 (46%)                  
      Capsule, Fibrosis                                                                       1 (1%)                                
      Lymphoid Follicle, Atrophy                       6 (6%)       3 (3%)       3 (3%)       4 (4%)       6 (6%)                   
      Lymphoid Follicle, Hyperplasia                   1 (1%)       1 (1%)                                                          
   Thymus                                             (95)         (95)         (92)         (91)         (92)                      
      Atrophy                                         51 (54%)     48 (51%)     47 (51%)     48 (53%)     43 (47%)                  
      Cyst                                             1 (1%)       3 (3%)       5 (5%)       2 (2%)       2 (2%)                   
      Ectopic Parathyroid Gland                                                  1 (1%)                                             
      Hemorrhage                                       2 (2%)       1 (1%)       3 (3%)       6 (7%)       5 (5%)                   

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    7                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
HEMATOPOIETIC SYSTEM - CONT                                                                                                         
      Hyperplasia, Lymphoid                                                      1 (1%)                                             
      Epithelial Cell, Hyperplasia                     3 (3%)       1 (1%)       3 (3%)       4 (4%)       2 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Mammary Gland                                      (100)        (100)        (100)        (100)        (100)                     
      Cyst                                            47 (47%)     54 (54%)     56 (56%)     61 (61%)     53 (53%)                  
      Fibrosis                                                      2 (2%)                                                          
      Galactocele                                     10 (10%)      7 (7%)      14 (14%)      7 (7%)      10 (10%)                  
      Inflammation, Chronic                                         1 (1%)       2 (2%)       2 (2%)       2 (2%)                   
      Mineralization                                                                                       2 (2%)                   
      Epithelium, Hyperplasia                          1 (1%)       4 (4%)       3 (3%)       2 (2%)       3 (3%)                   
   Skin                                               (100)        (100)        (100)        (100)        (100)                     
      Cyst Epithelial Inclusion                                                  1 (1%)                    1 (1%)                   
      Hyperkeratosis                                   1 (1%)                    1 (1%)                                             
      Hyperkeratosis, Focal                                                      1 (1%)                                             
      Inflammation, Chronic                            1 (1%)                    1 (1%)       1 (1%)                                
      Inflammation, Chronic Active                                               1 (1%)                    1 (1%)                   
      Inflammation, Chronic Active, Focal                           1 (1%)                                                          
      Dermis, Fibrosis, Focal                                                                 1 (1%)                                
      Epidermis, Hyperplasia, Diffuse                  1 (1%)                                                                       
      Epidermis, Lip, Hyperplasia, Focal                                                      1 (1%)                                
      Nipple, Hyperkeratosis                                                     1 (1%)                                             
      Subcutaneous Tissue, Inflammation, Chronic                                 1 (1%)                                             
      Subcutaneous Tissue, Necrosis                                 1 (1%)                                                          
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (100)        (100)        (100)        (100)        (100)                     
      Cranium, Hyperostosis                            7 (7%)       1 (1%)       5 (5%)       5 (5%)       2 (2%)                   
      Femur, Hyperostosis                             20 (20%)     10 (10%)     20 (20%)     18 (18%)     13 (13%)                  
      Intervertebral Disc, Degeneration                             1 (1%)                                                          
      Maxilla, Hyperostosis                            1 (1%)                    1 (1%)                                             
      Turbinate, Hyperostosis                          7 (7%)       3 (3%)       9 (9%)      11 (11%)      6 (6%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (100)        (100)        (100)        (100)        (100)                     
      Mineralization                                                                                       1 (1%)                   
      Cerebellum, Gliosis, Focal                                                                           1 (1%)                   
      Cerebellum, Hemorrhage                                                                               2 (2%)                   
      Cerebrum, Infiltration Cellular, Lymphocyte                                             1 (1%)                                
      Cerebrum, Mineralization                                      2 (2%)                                                          
      Hypothalamus, Compression                       16 (16%)      9 (9%)      16 (16%)     15 (15%)     19 (19%)                  

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    8                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
NERVOUS SYSTEM - CONT                                                                                                               
      Pons, Compression                                                          2 (2%)                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Larynx                                             (1)          (1)          (1)          (1)          (1)                       
      Inflammation, Chronic                                                      1 (100%)                                           
   Lung                                               (100)        (100)        (100)        (100)        (100)                     
      Congestion                                       5 (5%)       7 (7%)       4 (4%)       6 (6%)       7 (7%)                   
      Emphysema                                                                               1 (1%)                                
      Hemorrhage                                       1 (1%)                    2 (2%)       1 (1%)       1 (1%)                   
      Infiltration Cellular, Lymphocyte                1 (1%)       6 (6%)       4 (4%)       7 (7%)       3 (3%)                   
      Infiltration Cellular, Histiocyte               31 (31%)     42 (42%)     34 (34%)     46 (46%)     35 (35%)                  
      Infiltration Cellular, Mixed Cell                2 (2%)       5 (5%)                                                          
      Metaplasia, Focal, Osseous                       1 (1%)                                                                       
      Mineralization                                                1 (1%)                                                          
      Pigmentation                                     1 (1%)       1 (1%)       1 (1%)                                             
      Alveolar Epithelium, Hyperplasia, Focal          4 (4%)       3 (3%)       4 (4%)       1 (1%)       3 (3%)                   
      Interstitium, Inflammation, Chronic             10 (10%)     20 (20%)     13 (13%)      4 (4%)       7 (7%)                   
      Serosa, Inflammation, Chronic                    1 (1%)                                              1 (1%)                   
   Nose                                               (100)        (100)        (100)        (100)        (100)                     
      Inflammation, Acute                              1 (1%)                                              2 (2%)                   
      Inflammation, Chronic                            1 (1%)       2 (2%)       4 (4%)       1 (1%)       3 (3%)                   
      Inflammation, Chronic Active                     8 (8%)       8 (8%)       7 (7%)       5 (5%)       7 (7%)                   
      Glands, Cyst                                     1 (1%)                                                                       
      Nasolacrimal Duct, Inflammation, Acute                                     1 (1%)       2 (2%)                                
      Nasolacrimal Duct, Inflammation, Chronic         2 (2%)       6 (6%)       4 (4%)       1 (1%)       7 (7%)                   
      Nasolacrimal Duct, Inflammation, Chronic                                                                                      
          Active                                                    3 (3%)       2 (2%)                    1 (1%)                   
      Olfactory Epithelium, Cytoplasmic Alteration    69 (69%)     83 (83%)     87 (87%)     74 (74%)     77 (77%)                  
      Olfactory Epithelium, Mineralization, Focal                                1 (1%)                                             
      Respiratory Epithelium, Cytoplasmic                                                                                           
          Alteration                                   4 (4%)       1 (1%)       3 (3%)       5 (5%)       1 (1%)                   
   Trachea                                            (100)        (100)        (100)        (100)        (100)                     
      Inflammation, Chronic                            6 (6%)       1 (1%)       7 (7%)       7 (7%)       5 (5%)                   
      Inflammation, Chronic Active                                               1 (1%)                                             
      Glands, Cyst                                                  2 (2%)                                                          
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Eye                                                (6)          (4)          (7)          (6)          (3)                       
      Atrophy                                                                    2 (29%)      1 (17%)                               
      Bilateral, Cornea, Mineralization                                                                    1 (33%)                  
      Bilateral, Iris, Synechia                        1 (17%)                                                                      
      Bilateral, Lens, Cataract                        1 (17%)                   1 (14%)      1 (17%)                               
      Bilateral, Retina, Atrophy                       1 (17%)                   1 (14%)      1 (17%)                               

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page    9                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
SPECIAL SENSES SYSTEM - CONT                                                                                                        
      Cornea, Inflammation, Acute                                                1 (14%)                                            
      Cornea, Inflammation, Chronic Active                                                    1 (17%)                               
      Iris, Synechia                                   1 (17%)                                                                      
      Lens, Cataract                                   5 (83%)      4 (100%)     4 (57%)      3 (50%)      2 (67%)                  
      Retina, Atrophy                                  5 (83%)      4 (100%)     4 (57%)      3 (50%)      2 (67%)                  
   Harderian Gland                                    (100)        (100)        (100)        (100)        (100)                     
      Atrophy, Focal                                   1 (1%)       2 (2%)       2 (2%)       3 (3%)                                
      Cyst                                                                       1 (1%)                                             
      Hyperplasia, Focal                                            1 (1%)                    2 (2%)       2 (2%)                   
      Infiltration Cellular, Lymphocyte               34 (34%)     33 (33%)     33 (33%)     28 (28%)     27 (27%)                  
      Inflammation, Chronic                            4 (4%)       3 (3%)       5 (5%)       6 (6%)       2 (2%)                   
      Mineralization                                   1 (1%)                                                                       
      Pigmentation                                     1 (1%)                                                                       
      Bilateral, Infiltration Cellular, Lymphocyte    35 (35%)     40 (40%)     32 (32%)     28 (28%)     39 (39%)                  
      Bilateral, Inflammation, Chronic                 6 (6%)       6 (6%)      11 (11%)      9 (9%)      12 (12%)                  
      Bilateral, Inflammation, Chronic Active                                                              1 (1%)                   
   Lacrimal Gland                                     (2)          (1)          (1)          (4)                                    
      Inflammation, Chronic                                                                   1 (25%)                               
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (100)        (100)        (100)        (100)        (100)                     
      Hydronephrosis                                                             1 (1%)                                             
      Infarct                                          1 (1%)       1 (1%)       1 (1%)       1 (1%)                                
      Infiltration Cellular, Lymphocyte                2 (2%)                                              1 (1%)                   
      Inflammation, Chronic Active                                  1 (1%)                                                          
      Mineralization                                  13 (13%)     12 (12%)     18 (18%)     11 (11%)     23 (23%)                  
      Bilateral, Infiltration Cellular, Lymphocyte     1 (1%)                                                                       
      Bilateral, Mineralization                       10 (10%)     12 (12%)     11 (11%)      6 (6%)      16 (16%)                  
      Bilateral, Necrosis, Chronic                                                                         1 (1%)                   
      Bilateral, Nephropathy                          54 (54%)     46 (46%)     69 (69%)     46 (46%)     51 (51%)                  
      Bilateral, Pigmentation                                                    2 (2%)                    1 (1%)                   
      Bilateral, Artery, Hypertrophy                                                          1 (1%)                                
      Bilateral, Medulla, Inflammation, Chronic        1 (1%)                                                                       
      Bilateral, Pelvis, Inflammation, Acute           1 (1%)                                                                       
      Bilateral, Pelvis, Inflammation, Chronic         2 (2%)                                              1 (1%)                   
      Bilateral, Pelvis, Inflammation, Chronic                                                                                      
          Active                                                                                           1 (1%)                   
      Bilateral, Pelvis, Transitional Epithelium,                                                                                   
           Hyperplasia                                              2 (2%)                                                          
      Bilateral, Renal Tubule, Accumulation,                                                                                        
          Hyaline Droplet                              5 (5%)       2 (2%)       3 (3%)       3 (3%)                                
      Bilateral, Renal Tubule, Degeneration            2 (2%)       2 (2%)       1 (1%)       2 (2%)       3 (3%)                   
      Bilateral, Renal Tubule, Dilatation                                                     1 (1%)                                
      Bilateral, Renal Tubule, Pigmentation           26 (26%)     11 (11%)     13 (13%)     30 (30%)     11 (11%)                  
      Capsule, Fibrosis, Focal                                                   1 (1%)                                             

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   10                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS FEMALE                   SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
URINARY SYSTEM - CONT                                                                                                               
      Pelvis, Dilatation                               1 (1%)       1 (1%)                                                          
      Pelvis, Inflammation, Acute                      1 (1%)                                                                       
      Pelvis, Inflammation, Chronic                                 2 (2%)       1 (1%)                    2 (2%)                   
      Pelvis, Inflammation, Chronic Active                          3 (3%)                    1 (1%)                                
      Pelvis, Transitional Epithelium, Hyperplasia     2 (2%)       1 (1%)       1 (1%)                    1 (1%)                   
      Renal Tubule, Hyperplasia, Focal                                           1 (1%)       1 (1%)                                
      Renal Tubule, Necrosis                                                     1 (1%)                                             
   Urinary Bladder                                    (99)         (97)         (99)         (99)         (96)                      
      Calculus Micro Observation Only                                            1 (1%)                                             
      Edema                                            1 (1%)                                 1 (1%)                                
      Infiltration Cellular, Lymphocyte               10 (10%)      9 (9%)       9 (9%)       5 (5%)      10 (10%)                  
      Inflammation, Chronic                            1 (1%)       2 (2%)       1 (1%)       1 (1%)                                
      Transitional Epithelium, Hyperplasia             2 (2%)       1 (1%)                                                          
                                                                                                                                    

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   11                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________

DISPOSITION SUMMARY                                                                                                                 

  Animals Initially In Study                         100          100          100          100          100                        
  Early Deaths                                                                                                                      
    Moribund Sacrifice                                29           32           32           36           33                        
    Natural Death                                     14           21           21           16            7                        
  Survivors                                                                                                                         
    Terminal Sacrifice                                57           46           47           48           59                        
  Other                                                             1                                      1                        

  Animals Examined Microscopically                   100          100          100          100          100                        
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Intestine Large, Colon                             (100)        (99)         (99)         (100)        (99)                      
      Inflammation, Chronic                                                      1 (1%)                                             
      Parasite Metazoan                                                                       1 (1%)                                
   Intestine Large, Rectum                            (99)         (100)        (100)        (99)         (100)                     
      Edema                                                                      1 (1%)                                             
      Ulcer                                                                      1 (1%)                                             
   Intestine Large, Cecum                             (98)         (99)         (97)         (100)        (99)                      
      Edema                                            1 (1%)                    1 (1%)                    1 (1%)                   
      Inflammation, Chronic Active                     1 (1%)                                                                       
      Parasite Metazoan                                                                       1 (1%)                                
   Intestine Small, Duodenum                          (99)         (94)         (100)        (100)        (98)                      
      Inflammation, Acute                                                        1 (1%)                                             
   Intestine Small, Ileum                             (94)         (92)         (97)         (96)         (97)                      
      Inflammation, Chronic                            1 (1%)                                 1 (1%)                                
      Peyer's Patch, Hyperplasia, Lymphoid                                                    2 (2%)       1 (1%)                   
   Liver                                              (100)        (100)        (100)        (100)        (100)                     
      Angiectasis, Focal                                            1 (1%)       3 (3%)                    1 (1%)                   
      Atrophy                                                                                              1 (1%)                   
      Atypia Cellular, Focal                                        1 (1%)                                                          
      Basophilic Focus                                35 (35%)     35 (35%)     47 (47%)     37 (37%)     36 (36%)                  
      Clear Cell Focus                                44 (44%)     37 (37%)     38 (38%)     35 (35%)     41 (41%)                  
      Degeneration, Cystic, Focal                      8 (8%)       2 (2%)      11 (11%)     13 (13%)      5 (5%)                   
      Eosinophilic Focus                              21 (21%)     19 (19%)     26 (26%)     17 (17%)     17 (17%)                  
      Hematopoietic Cell Proliferation                 5 (5%)       4 (4%)       6 (6%)       3 (3%)       2 (2%)                   
      Hepatodiaphragmatic Nodule                       2 (2%)       5 (5%)       7 (7%)                    1 (1%)                   
      Infiltration Cellular, Lymphocyte                1 (1%)                                              2 (2%)                   
      Infiltration Cellular, Mixed Cell               11 (11%)     15 (15%)      9 (9%)      14 (14%)     26 (26%)                  
      Inflammation, Chronic                            2 (2%)       1 (1%)                    1 (1%)       3 (3%)                   
      Inflammation, Chronic Active                                  1 (1%)                                                          
      Mixed Cell Focus                                25 (25%)     28 (28%)     25 (25%)     23 (23%)     18 (18%)                  
      Necrosis                                         8 (8%)       6 (6%)       6 (6%)       4 (4%)       2 (2%)                   
      Pigmentation                                                               1 (1%)       1 (1%)       2 (2%)                   
      Tension Lipidosis                                1 (1%)                                                                       

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   12                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Bile Duct, Hyperplasia                          79 (79%)     88 (88%)     88 (88%)     74 (74%)     79 (79%)                  
      Centrilobular, Necrosis                                                                              1 (1%)                   
      Hepatocyte, Degeneration                         1 (1%)                                                                       
      Hepatocyte, Hypertrophy                          1 (1%)                                                                       
      Hepatocyte, Vacuolization Cytoplasmic           14 (14%)     13 (13%)     19 (19%)     19 (19%)     20 (20%)                  
      Hepatocyte, Vacuolization Cytoplasmic, Focal                  1 (1%)       1 (1%)                                             
   Mesentery                                          (17)         (22)         (27)         (21)         (16)                      
      Accessory Spleen                                                                                     2 (13%)                  
      Inflammation, Chronic                                                      1 (4%)                                             
      Artery, Hemorrhage                                            1 (5%)                                                          
      Artery, Inflammation, Chronic                                                                        1 (6%)                   
      Fat, Necrosis                                   14 (82%)     15 (68%)     23 (85%)     15 (71%)     13 (81%)                  
   Pancreas                                           (98)         (99)         (99)         (99)         (100)                     
      Cyst                                             3 (3%)                    1 (1%)       1 (1%)       1 (1%)                   
      Fibrosis, Focal                                                                         1 (1%)                                
      Hemorrhage                                                                 1 (1%)                                             
      Infiltration Cellular, Lymphocyte                5 (5%)      14 (14%)     13 (13%)      9 (9%)       3 (3%)                   
      Acinus, Atrophy, Diffuse                                      3 (3%)       1 (1%)       1 (1%)       1 (1%)                   
      Acinus, Atrophy, Focal                          33 (34%)     26 (26%)     40 (40%)     27 (27%)     41 (41%)                  
      Acinus, Basophilic Focus                         1 (1%)       1 (1%)       1 (1%)                    1 (1%)                   
      Acinus, Hyperplasia, Focal                      20 (20%)     21 (21%)     23 (23%)     20 (20%)     18 (18%)                  
      Acinus, Inflammation, Chronic                                 1 (1%)                    1 (1%)                                
      Artery, Inflammation, Chronic                    1 (1%)       2 (2%)                    2 (2%)       1 (1%)                   
   Salivary Glands                                    (99)         (99)         (100)        (100)        (100)                     
      Mineralization                                                1 (1%)                                                          
      Bilateral, Pigmentation                                       1 (1%)                                                          
      Parotid Gland, Atrophy                                        2 (2%)                    2 (2%)                                
      Parotid Gland, Fibrosis, Focal                                                          1 (1%)                                
      Parotid Gland, Hyperplasia, Focal                             1 (1%)                    1 (1%)                                
      Parotid Gland, Inflammation, Chronic                                                    1 (1%)                                
      Parotid Gland, Vacuolization Cytoplasmic,                                                                                     
           Diffuse                                                  1 (1%)                                                          
      Sublingual Gland, Atrophy                                                               1 (1%)       1 (1%)                   
      Sublingual Gland, Infiltration Cellular,                                                                                      
           Lymphocyte                                               1 (1%)                                                          
      Sublingual Gland, Inflammation, Chronic                       1 (1%)                                                          
      Submandibular Gland, Atrophy                                                                         1 (1%)                   
   Stomach, Forestomach                               (100)        (100)        (100)        (100)        (100)                     
      Edema                                            3 (3%)       3 (3%)       5 (5%)       3 (3%)       6 (6%)                   
      Erosion, Focal                                   1 (1%)       1 (1%)                    1 (1%)                                
      Inflammation, Acute                                           1 (1%)       1 (1%)                    1 (1%)                   
      Inflammation, Chronic                            1 (1%)       1 (1%)                                 3 (3%)                   
      Inflammation, Chronic Active                     2 (2%)       1 (1%)       4 (4%)       4 (4%)       1 (1%)                   
      Ulcer                                            1 (1%)       2 (2%)       2 (2%)       3 (3%)       7 (7%)                   
      Epithelium, Hyperplasia                          6 (6%)       5 (5%)       9 (9%)       2 (2%)       7 (7%)                   
   Stomach, Glandular                                 (100)        (100)        (100)        (100)        (100)                     

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   13                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Atrophy                                          3 (3%)                                                                       
      Edema                                            2 (2%)                    1 (1%)                                             
      Erosion, Focal                                   9 (9%)       3 (3%)       9 (9%)       8 (8%)      11 (11%)                  
      Hyperplasia, Focal                                                                      1 (1%)       1 (1%)                   
      Inflammation, Acute                                                                     1 (1%)       1 (1%)                   
      Inflammation, Chronic                                                                                1 (1%)                   
      Inflammation, Chronic Active                                  1 (1%)       1 (1%)                    1 (1%)                   
      Mineralization                                   1 (1%)                                              1 (1%)                   
      Ulcer                                                                      1 (1%)                                             
      Artery, Inflammation, Chronic                    1 (1%)       1 (1%)                                                          
      Epithelium, Cyst                                                                        1 (1%)                                
      Glands, Cyst                                     4 (4%)       6 (6%)       1 (1%)       3 (3%)       2 (2%)                   
      Muscularis, Mineralization                                    1 (1%)                                                          
   Tooth                                              (2)          (1)          (1)          (1)          (6)                       
      Malformation                                                                                         5 (83%)                  
      Gingiva, Inflammation, Chronic Active            2 (100%)                  1 (100%)                  1 (17%)                  
      Gingiva, Malformation                            1 (50%)                                                                      
      Peridontal Tissue, Inflammation, Chronic                                                                                      
          Active                                                                              1 (100%)                              
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (99)         (99)         (99)         (100)        (100)                     
      Aneurysm                                         1 (1%)                                                                       
      Inflammation, Chronic                            1 (1%)                                                                       
      Mineralization                                                1 (1%)                                 1 (1%)                   
   Heart                                              (100)        (100)        (100)        (100)        (100)                     
      Cardiomyopathy                                  88 (88%)     87 (87%)     88 (88%)     87 (87%)     87 (87%)                  
      Metaplasia, Focal, Osseous                                                              1 (1%)                                
      Pigmentation                                                                                         2 (2%)                   
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Artery, Mineralization                                        1 (1%)                                 1 (1%)                   
      Atrium, Mineralization                                                                               1 (1%)                   
      Atrium, Thrombosis                               6 (6%)       6 (6%)       6 (6%)       9 (9%)       4 (4%)                   
      Epicardium, Inflammation, Chronic                1 (1%)                                                                       
      Myocardium, Necrosis                                                       1 (1%)                                             
      Pericardium, Inflammation, Chronic                                                                   1 (1%)                   
      Valve, Inflammation, Chronic                                  1 (1%)                    2 (2%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (99)         (100)        (100)        (100)        (100)                     
      Accessory Adrenal Cortical Nodule                1 (1%)                    2 (2%)                    3 (3%)                   
      Angiectasis                                                   4 (4%)                    1 (1%)                                
      Degeneration, Focal                                                        1 (1%)                                             

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   14                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ENDOCRINE SYSTEM - CONT                                                                                                             
      Hematopoietic Cell Proliferation                 1 (1%)       4 (4%)       3 (3%)       2 (2%)       6 (6%)                   
      Hemorrhage                                       1 (1%)       1 (1%)                                                          
      Hyperplasia, Focal                              11 (11%)     15 (15%)      9 (9%)      11 (11%)      9 (9%)                   
      Hypertrophy, Focal                               3 (3%)       3 (3%)       6 (6%)       3 (3%)                                
      Necrosis, Focal                                  2 (2%)                                                                       
      Pigmentation                                                                                         1 (1%)                   
      Vacuolization Cytoplasmic, Focal                14 (14%)     19 (19%)     19 (19%)     20 (20%)     19 (19%)                  
      Bilateral, Angiectasis                           5 (5%)       8 (8%)       2 (2%)       2 (2%)       2 (2%)                   
      Bilateral, Hematopoietic Cell Proliferation      2 (2%)       3 (3%)       2 (2%)                    3 (3%)                   
      Bilateral, Hyperplasia, Focal                    1 (1%)                                                                       
      Bilateral, Infiltration Cellular, Mixed Cell                               1 (1%)                                             
      Bilateral, Necrosis                                           1 (1%)                                                          
      Bilateral, Pigmentation                          1 (1%)                    1 (1%)                    1 (1%)                   
      Bilateral, Vacuolization Cytoplasmic, Diffuse                 1 (1%)       2 (2%)       4 (4%)       3 (3%)                   
      Bilateral, Vacuolization Cytoplasmic, Focal      6 (6%)       5 (5%)       4 (4%)       5 (5%)       1 (1%)                   
   Adrenal Medulla                                    (98)         (93)         (100)        (100)        (95)                      
      Degeneration, Cystic                                          1 (1%)                                                          
      Hyperplasia, Focal                              14 (14%)     11 (12%)      9 (9%)      16 (16%)     13 (14%)                  
      Infiltration Cellular, Lymphocyte                             1 (1%)                    1 (1%)                                
      Thrombosis                                                                 1 (1%)                                             
      Bilateral, Hyperplasia, Focal                    3 (3%)       5 (5%)       2 (2%)       2 (2%)       1 (1%)                   
      Bilateral, Infiltration Cellular, Lymphocyte                                            1 (1%)                                
   Islets, Pancreatic                                 (99)         (99)         (99)         (99)         (100)                     
      Hyperplasia, Focal                               1 (1%)       1 (1%)       9 (9%)       2 (2%)       7 (7%)                   
      Inflammation, Chronic, Focal                                                            1 (1%)                                
      Metaplasia, Focal                                                          1 (1%)                                             
   Parathyroid Gland                                  (85)         (87)         (93)         (81)         (89)                      
      Hyperplasia, Focal                               1 (1%)       1 (1%)                    1 (1%)                                
   Pineal Gland                                       (81)         (84)         (81)         (79)         (91)                      
      Fibrosis                                                                                1 (1%)                                
      Hyperplasia, Focal                                            1 (1%)                                                          
      Infiltration Cellular, Lymphocyte                1 (1%)       1 (1%)       2 (2%)                                             
      Mineralization                                  42 (52%)     52 (62%)     54 (67%)     39 (49%)     57 (63%)                  
   Pituitary Gland                                    (98)         (95)         (97)         (100)        (98)                      
      Inflammation, Granulomatous                                   1 (1%)                                                          
      Pars Distalis, Angiectasis, Focal                3 (3%)       2 (2%)       4 (4%)       2 (2%)       2 (2%)                   
      Pars Distalis, Atrophy, Focal                    1 (1%)                                                                       
      Pars Distalis, Cyst                              8 (8%)       6 (6%)       6 (6%)      16 (16%)      7 (7%)                   
      Pars Distalis, Hemorrhage                                                  1 (1%)                                             
      Pars Distalis, Hyperplasia, Focal               11 (11%)     15 (16%)      9 (9%)      14 (14%)     16 (16%)                  
      Pars Distalis, Hypertrophy, Focal                2 (2%)       2 (2%)       3 (3%)                    2 (2%)                   
      Pars Distalis, Pigmentation, Focal               1 (1%)                                                                       
      Pars Distalis, Vacuolization Cytoplasmic                      2 (2%)                    1 (1%)       1 (1%)                   
      Pars Distalis, Vacuolization Cytoplasmic,                                                                                     
           Focal                                                    1 (1%)                                                          
      Pars Intermedia, Atypia Cellular                              1 (1%)                                                          
      Pars Intermedia, Cyst                            3 (3%)                    1 (1%)                    2 (2%)                   

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   15                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ENDOCRINE SYSTEM - CONT                                                                                                             
      Pars Intermedia, Hyperplasia, Focal                           1 (1%)                                                          
      Pars Nervosa, Atypia Cellular                                 1 (1%)                                                          
      Pars Nervosa, Cyst                                                                      1 (1%)                                
      Pars Nervosa, Degeneration, Focal                                          1 (1%)                                             
      Rathke's Cleft, Cyst                                          1 (1%)       1 (1%)                    1 (1%)                   
   Thyroid Gland                                      (99)         (100)        (100)        (100)        (100)                     
      Hemorrhage                                                                                           1 (1%)                   
      Inflammation, Chronic                            2 (2%)                                 2 (2%)                                
      Mineralization                                                1 (1%)                                                          
      Ultimobranchial Cyst                             1 (1%)       1 (1%)       4 (4%)       7 (7%)       3 (3%)                   
      Bilateral, C-Cell, Hyperplasia, Focal            1 (1%)                    1 (1%)                                             
      C-Cell, Hyperplasia                                           1 (1%)       3 (3%)       1 (1%)       2 (2%)                   
      C-Cell, Hyperplasia, Diffuse                     4 (4%)                                 1 (1%)                                
      C-Cell, Hyperplasia, Focal                      28 (28%)     22 (22%)     23 (23%)     24 (24%)     31 (31%)                  
      Follicle, Cyst                                   3 (3%)       2 (2%)       5 (5%)       2 (2%)       3 (3%)                   
      Follicular Cell, Hyperplasia, Focal              1 (1%)                    2 (2%)       1 (1%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   Tissue NOS                                         (3)          (2)                       (1)          (2)                       
      Necrosis                                         1 (33%)                                                                      
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Epididymis                                         (100)        (100)        (100)        (100)        (100)                     
      Atrophy                                          1 (1%)                                                                       
      Granuloma Sperm                                  2 (2%)                                 3 (3%)                                
      Infiltration Cellular, Lymphocyte                             1 (1%)                    1 (1%)                                
      Inflammation, Acute                                                                     1 (1%)                                
      Inflammation, Chronic                            3 (3%)       4 (4%)       4 (4%)       5 (5%)       2 (2%)                   
      Inflammation, Chronic Active                                  1 (1%)       1 (1%)       1 (1%)       1 (1%)                   
      Inflammation, Granulomatous                                   1 (1%)                                                          
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Bilateral, Inflammation, Acute                                             1 (1%)                                             
      Bilateral, Inflammation, Chronic                              1 (1%)                                                          
      Bilateral, Epithelium, Degeneration, Mucoid     58 (58%)     61 (61%)     54 (54%)     60 (60%)     54 (54%)                  
      Epithelium, Degeneration, Mucoid                24 (24%)     15 (15%)     29 (29%)     12 (12%)     25 (25%)                  
   Preputial Gland                                    (100)        (99)         (100)        (99)         (100)                     
      Cyst                                                                       1 (1%)                                             
      Hyperplasia, Focal                               4 (4%)       8 (8%)       2 (2%)       4 (4%)       1 (1%)                   
      Inflammation, Acute                                           1 (1%)                    1 (1%)                                
      Inflammation, Chronic                           18 (18%)     19 (19%)     25 (25%)     31 (31%)     35 (35%)                  
      Inflammation, Chronic Active                     4 (4%)       3 (3%)       2 (2%)       7 (7%)       4 (4%)                   
      Inflammation, Granulomatous                                   1 (1%)                                                          
      Bilateral, Atrophy                               1 (1%)       1 (1%)                    2 (2%)                                

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   16                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
GENITAL SYSTEM - CONT                                                                                                               
      Bilateral, Inflammation, Chronic                47 (47%)     48 (48%)     44 (44%)     33 (33%)     34 (34%)                  
      Bilateral, Inflammation, Chronic Active         11 (11%)      6 (6%)       5 (5%)       4 (4%)      11 (11%)                  
   Prostate                                           (100)        (99)         (100)        (99)         (100)                     
      Atrophy                                         48 (48%)     57 (58%)     34 (34%)     47 (47%)     52 (52%)                  
      Cyst                                                                                                 1 (1%)                   
      Hypertrophy                                                                                          1 (1%)                   
      Infiltration Cellular, Lymphocyte                                                                    2 (2%)                   
      Inflammation, Acute                              4 (4%)       7 (7%)      15 (15%)      7 (7%)      14 (14%)                  
      Inflammation, Chronic                            6 (6%)       6 (6%)      14 (14%)      6 (6%)       7 (7%)                   
      Inflammation, Chronic Active                    36 (36%)     44 (44%)     36 (36%)     35 (35%)     39 (39%)                  
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Bilateral, Inflammation, Chronic                              1 (1%)                                                          
      Bilateral, Inflammation, Chronic Active                                                              1 (1%)                   
      Epithelium, Hyperplasia, Focal                  10 (10%)      7 (7%)       5 (5%)       9 (9%)      12 (12%)                  
   Seminal Vesicle                                    (100)        (99)         (100)        (99)         (100)                     
      Atrophy                                         30 (30%)     48 (48%)     50 (50%)     38 (38%)     30 (30%)                  
      Dilatation                                                                                           2 (2%)                   
      Inflammation, Acute                                           1 (1%)       1 (1%)                                             
      Inflammation, Chronic Active                                               1 (1%)                    1 (1%)                   
      Bilateral, Atrophy                              54 (54%)     31 (31%)     36 (36%)     40 (40%)     49 (49%)                  
      Bilateral, Dilatation                                         1 (1%)                                 2 (2%)                   
   Testes                                             (100)        (100)        (100)        (100)        (100)                     
      Mineralization                                   1 (1%)       1 (1%)       4 (4%)                    1 (1%)                   
      Necrosis                                                                                1 (1%)                                
      Bilateral, Inflammation, Chronic                              1 (1%)                                                          
      Bilateral, Mineralization                        2 (2%)                                                                       
      Bilateral, Necrosis                                           1 (1%)                                                          
      Bilateral, Artery, Inflammation, Chronic         1 (1%)                                                                       
      Bilateral, Interstitial Cell, Hyperplasia,                                                                                    
           Diffuse                                                               1 (1%)                                             
      Bilateral, Interstitial Cell, Hyperplasia,                                                                                    
           Focal                                       3 (3%)       1 (1%)       5 (5%)       5 (5%)       3 (3%)                   
      Bilateral, Germinal Epithelium, Atrophy          4 (4%)       3 (3%)       3 (3%)       2 (2%)       4 (4%)                   
      Germinal Epithelium, Atrophy                     6 (6%)      11 (11%)     11 (11%)     10 (10%)      9 (9%)                   
      Germinal Epithelium, Hyperplasia, Focal                                                 1 (1%)                                
      Interstitial Cell, Hyperplasia, Focal            8 (8%)       8 (8%)      12 (12%)     17 (17%)     21 (21%)                  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
   Bone Marrow                                        (100)        (100)        (100)        (99)         (100)                     
      Depletion Cellular                               3 (3%)       2 (2%)       3 (3%)       2 (2%)       6 (6%)                   
      Hemorrhage                                                                              2 (2%)       1 (1%)                   
      Hyperplasia                                     14 (14%)     18 (18%)     15 (15%)     12 (12%)     12 (12%)                  
      Myelofibrosis                                                 1 (1%)                                                          
      Necrosis                                                                   4 (4%)                                             
   Lymph Node                                         (15)         (7)          (7)          (13)         (8)                       

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   17                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
HEMATOPOIETIC SYSTEM - CONT                                                                                                         
      Hyperplasia, Lymphoid                            1 (7%)                                              1 (13%)                  
      Mediastinal, Hemorrhage                          2 (13%)      1 (14%)      1 (14%)      2 (15%)      1 (13%)                  
      Mediastinal, Hyperplasia, Lymphoid                                         1 (14%)                                            
      Mediastinal, Pigmentation                        1 (7%)                                 1 (8%)                                
   Lymph Node, Mandibular                             (99)         (99)         (100)        (100)        (100)                     
      Atrophy                                                       1 (1%)                                                          
      Degeneration, Cystic                            15 (15%)     10 (10%)     11 (11%)     12 (12%)     11 (11%)                  
      Fibrosis                                         1 (1%)                    1 (1%)                                             
      Hemorrhage                                       2 (2%)       1 (1%)                    7 (7%)       1 (1%)                   
      Hyperplasia, Lymphoid                           17 (17%)     15 (15%)     14 (14%)     13 (13%)     14 (14%)                  
      Infiltration Cellular, Histiocyte                             3 (3%)       4 (4%)       2 (2%)                                
      Pigmentation                                     1 (1%)       1 (1%)                    1 (1%)       2 (2%)                   
   Lymph Node, Mesenteric                             (100)        (99)         (100)        (100)        (100)                     
      Angiectasis                                                                1 (1%)                                             
      Atrophy                                                       1 (1%)                    1 (1%)                                
      Degeneration, Cystic                             1 (1%)       2 (2%)       2 (2%)       1 (1%)       1 (1%)                   
      Hematopoietic Cell Proliferation                                                        1 (1%)                                
      Hemorrhage                                       2 (2%)       2 (2%)       2 (2%)       2 (2%)       1 (1%)                   
      Hyperplasia, Lymphoid                                         1 (1%)       1 (1%)       2 (2%)       3 (3%)                   
      Infiltration Cellular, Histiocyte               65 (65%)     70 (71%)     73 (73%)     70 (70%)     80 (80%)                  
      Inflammation, Chronic                                         2 (2%)                                                          
      Pigmentation                                     1 (1%)                                                                       
      Artery, Inflammation, Chronic Active                                                    1 (1%)                                
   Spleen                                             (100)        (100)        (100)        (100)        (100)                     
      Accessory Spleen                                 1 (1%)                    1 (1%)                    1 (1%)                   
      Congestion                                                    3 (3%)       5 (5%)       1 (1%)       1 (1%)                   
      Depletion Cellular, Focal                                     1 (1%)                                 1 (1%)                   
      Fibrosis                                         1 (1%)       6 (6%)       4 (4%)       1 (1%)       1 (1%)                   
      Hematopoietic Cell Proliferation                14 (14%)     12 (12%)     13 (13%)     15 (15%)     16 (16%)                  
      Hemorrhage                                       1 (1%)                                                                       
      Necrosis, Focal                                  1 (1%)                                                                       
      Pigmentation                                    12 (12%)     11 (11%)     17 (17%)     15 (15%)     19 (19%)                  
      Capsule, Inflammation, Chronic                                3 (3%)       1 (1%)                                             
      Capsule, Pigmentation, Focal                                  1 (1%)                                                          
      Lymphoid Follicle, Atrophy                       1 (1%)       4 (4%)       3 (3%)       3 (3%)       3 (3%)                   
      Lymphoid Follicle, Hyperplasia                                                          1 (1%)                                
   Thymus                                             (97)         (94)         (95)         (90)         (95)                      
      Atrophy                                         58 (60%)     46 (49%)     63 (66%)     62 (69%)     44 (46%)                  
      Cyst                                             1 (1%)       2 (2%)       1 (1%)                    2 (2%)                   
      Hemorrhage                                       2 (2%)       3 (3%)       2 (2%)       2 (2%)                                
      Hyperplasia, Lymphoid                                         1 (1%)       1 (1%)                    1 (1%)                   
      Epithelial Cell, Hyperplasia                     2 (2%)       3 (3%)       3 (3%)       6 (7%)       2 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   18                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Mammary Gland                                      (99)         (97)         (100)        (98)         (95)                      
      Cyst                                            18 (18%)     15 (15%)     10 (10%)     14 (14%)     14 (15%)                  
      Fibrosis                                                      2 (2%)       1 (1%)       2 (2%)                                
      Galactocele                                                   2 (2%)       5 (5%)       1 (1%)       5 (5%)                   
      Inflammation, Chronic                            1 (1%)                    3 (3%)       1 (1%)       1 (1%)                   
      Inflammation, Chronic Active                     1 (1%)                                                                       
      Mineralization                                   2 (2%)       1 (1%)       1 (1%)                    1 (1%)                   
      Pigmentation                                     2 (2%)                                              4 (4%)                   
      Epithelium, Hyperplasia                          9 (9%)       1 (1%)       4 (4%)       3 (3%)       4 (4%)                   
   Skin                                               (99)         (100)        (100)        (100)        (100)                     
      Congestion                                                                 1 (1%)                                             
      Cyst Epithelial Inclusion                                     4 (4%)       3 (3%)       3 (3%)       3 (3%)                   
      Hyperkeratosis                                                1 (1%)                                                          
      Inflammation, Acute                                                                                  1 (1%)                   
      Inflammation, Chronic Active                                               1 (1%)                                             
      Dermis, Fibrosis, Focal                                       2 (2%)       1 (1%)                                             
      Epidermis, Hyperplasia                                        1 (1%)                                                          
      Hair Follicle, Hyperplasia, Focal                                          1 (1%)       1 (1%)                                
      Lip, Hemorrhage                                                                                      1 (1%)                   
      Subcutaneous Tissue, Fibrosis                                                           2 (2%)       1 (1%)                   
      Subcutaneous Tissue, Hemorrhage                                            1 (1%)                                             
      Subcutaneous Tissue, Inflammation, Chronic                    1 (1%)                                                          
      Subcutaneous Tissue, Necrosis                    1 (1%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (100)        (100)        (100)        (100)        (100)                     
      Cranium, Hyperostosis                            1 (1%)       1 (1%)       1 (1%)                    1 (1%)                   
      Femur, Hyperostosis                              1 (1%)       2 (2%)       5 (5%)       2 (2%)       1 (1%)                   
      Femur, Hypertrophy                                                         1 (1%)                                             
      Maxilla, Osteomalacia                                         1 (1%)                                                          
      Turbinate, Hyperostosis                                       1 (1%)                                                          
   Skeletal Muscle                                    (10)         (6)          (11)         (4)          (7)                       
      Infiltration Cellular, Lymphocyte                             1 (17%)                                                         
      Inflammation, Chronic, Focal                                                                         1 (14%)                  
      Mineralization                                                1 (17%)                                                         
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (100)        (100)        (100)        (100)        (100)                     
      Artery, Thrombosis                                                         1 (1%)                                             
      Cerebrum, Hemorrhage                                                                    1 (1%)                                
      Cerebrum, Hydrocephalus                                                                              1 (1%)                   
      Cerebrum, Infiltration Cellular, Lymphocyte                                                          1 (1%)                   

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   19                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
NERVOUS SYSTEM - CONT                                                                                                               
      Cerebrum, Necrosis                                                         2 (2%)       1 (1%)                                
      Choroid Plexus, Hyperplasia                                                                          1 (1%)                   
      Choroid Plexus, Mineralization                                             1 (1%)       1 (1%)                                
      Choroid Plexus, Cerebrum, Infiltration                                                                                        
          Cellular, Lymphocyte                         1 (1%)                                                                       
      Hypothalamus, Compression                        5 (5%)       8 (8%)       1 (1%)       9 (9%)       8 (8%)                   
      Hypothalamus, Necrosis, Focal                                                           1 (1%)                                
      Meninges, Hyperplasia                                                      1 (1%)                                             
      Pons, Compression                                                                                    1 (1%)                   
      Thalamus, Necrosis, Focal                        1 (1%)                                                                       
   Spinal Cord                                        (11)         (6)          (9)          (4)          (6)                       
      Meninges, Cyst Epithelial Inclusion              1 (9%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Lung                                               (100)        (100)        (100)        (100)        (100)                     
      Congestion                                       5 (5%)       5 (5%)       2 (2%)       4 (4%)       3 (3%)                   
      Edema                                                                                                1 (1%)                   
      Fibrosis, Focal                                                                         1 (1%)                                
      Foreign Body                                                                                         1 (1%)                   
      Hemorrhage                                       1 (1%)                                                                       
      Infiltration Cellular, Lymphocyte                            11 (11%)      5 (5%)       2 (2%)       3 (3%)                   
      Infiltration Cellular, Histiocyte                8 (8%)      18 (18%)     12 (12%)      6 (6%)       5 (5%)                   
      Inflammation, Acute                                                                                  1 (1%)                   
      Inflammation, Chronic, Focal                                  1 (1%)                                                          
      Metaplasia, Focal, Osseous                                    1 (1%)                    4 (4%)       1 (1%)                   
      Alveolar Epithelium, Hyperplasia, Focal          6 (6%)       3 (3%)       7 (7%)       5 (5%)       4 (4%)                   
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Bronchus, Inflammation, Acute                                                           1 (1%)       1 (1%)                   
      Bronchus, Inflammation, Chronic                                                                      2 (2%)                   
      Bronchus, Inflammation, Chronic Active                                     1 (1%)                                             
      Interstitium, Inflammation, Acute                                                                    1 (1%)                   
      Interstitium, Inflammation, Chronic              5 (5%)       5 (5%)       3 (3%)       2 (2%)       3 (3%)                   
      Interstitium, Inflammation, Chronic Active       1 (1%)                                 2 (2%)                                
      Serosa, Inflammation, Chronic                                              1 (1%)                                             
   Nose                                               (100)        (98)         (100)        (100)        (100)                     
      Congestion                                                                              1 (1%)                                
      Foreign Body                                     1 (1%)       1 (1%)       1 (1%)       1 (1%)                                
      Inflammation, Acute                              1 (1%)                                              2 (2%)                   
      Inflammation, Chronic                            5 (5%)       3 (3%)       5 (5%)       4 (4%)       3 (3%)                   
      Inflammation, Chronic Active                    22 (22%)     25 (26%)     35 (35%)     25 (25%)     31 (31%)                  
      Metaplasia, Squamous                                          2 (2%)                                                          
      Mineralization, Focal                            1 (1%)                                                                       
      Glands, Cyst                                     1 (1%)                                                                       
      Nasolacrimal Duct, Inflammation, Acute           1 (1%)                    1 (1%)       1 (1%)                                
      Nasolacrimal Duct, Inflammation, Chronic         6 (6%)       8 (8%)      12 (12%)      7 (7%)       4 (4%)                   

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   20                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
RESPIRATORY SYSTEM - CONT                                                                                                           
      Nasolacrimal Duct, Inflammation, Chronic                                                                                      
          Active                                       1 (1%)                    1 (1%)       3 (3%)       4 (4%)                   
      Olfactory Epithelium, Cyst                                                 1 (1%)                                             
      Olfactory Epithelium, Cytoplasmic Alteration    36 (36%)     32 (33%)     48 (48%)     41 (41%)     29 (29%)                  
      Olfactory Epithelium, Mineralization                                       1 (1%)                                             
      Respiratory Epithelium, Cyst                                               1 (1%)       1 (1%)                                
      Respiratory Epithelium, Cytoplasmic                                                                                           
          Alteration                                   3 (3%)       1 (1%)       1 (1%)                    1 (1%)                   
      Respiratory Epithelium, Hyperplasia, Focal                                              1 (1%)                                
   Trachea                                            (100)        (100)        (100)        (100)        (100)                     
      Inflammation, Chronic                           10 (10%)     12 (12%)     15 (15%)      3 (3%)      12 (12%)                  
      Inflammation, Chronic Active                     1 (1%)       1 (1%)                                                          
      Glands, Cyst                                     1 (1%)                    1 (1%)                    1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Eye                                                             (3)          (2)          (7)          (1)                       
      Bilateral, Lens, Cataract                                                               1 (14%)                               
      Bilateral, Retina, Atrophy                                                              3 (43%)                               
      Iris, Inflammation, Chronic                                                1 (50%)                                            
      Iris, Synechia                                                                          1 (14%)      1 (100%)                 
      Lens, Cataract                                                3 (100%)     1 (50%)      5 (71%)      1 (100%)                 
      Retina, Atrophy                                               3 (100%)     2 (100%)     4 (57%)      1 (100%)                 
   Harderian Gland                                    (100)        (100)        (100)        (100)        (100)                     
      Atrophy, Diffuse                                                                                     1 (1%)                   
      Atrophy, Focal                                   2 (2%)       1 (1%)       8 (8%)       2 (2%)       1 (1%)                   
      Hyperplasia, Focal                               2 (2%)       2 (2%)       4 (4%)                    2 (2%)                   
      Infiltration Cellular, Lymphocyte               26 (26%)     30 (30%)     23 (23%)     25 (25%)     44 (44%)                  
      Inflammation, Acute                                                                                  1 (1%)                   
      Inflammation, Chronic                            3 (3%)       4 (4%)       6 (6%)       2 (2%)       1 (1%)                   
      Inflammation, Chronic Active                     1 (1%)                                                                       
      Pigmentation                                     1 (1%)                                                                       
      Bilateral, Atrophy, Diffuse                                                1 (1%)                                             
      Bilateral, Atrophy, Focal                                                                            1 (1%)                   
      Bilateral, Infiltration Cellular, Lymphocyte    17 (17%)     19 (19%)     21 (21%)     21 (21%)     16 (16%)                  
      Bilateral, Inflammation, Chronic                 5 (5%)       8 (8%)       5 (5%)       2 (2%)       5 (5%)                   
      Bilateral, Inflammation, Chronic Active          1 (1%)                                 1 (1%)                                
      Bilateral, Pigmentation                                                                              1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (100)        (100)        (100)        (100)        (100)                     
      Cyst                                             1 (1%)       3 (3%)       1 (1%)       2 (2%)       1 (1%)                   
      Fibrosis, Focal                                                                         2 (2%)                                
      Infarct                                          1 (1%)                    1 (1%)                                             

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   21                                                              
NTP Experiment-Test: 89029-05         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/27/98  
Route: MAGNETIC FIELDS                                                                                            Time: 16:24:10  
____________________________________________________________________________________________________________________________________

         FISCHER 344 RATS MALE                     SHAM         .02          2 GAUSS      10 GAUSS     10 GAUSS                     
                                                    CONTROL      GAUSS                                    INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
URINARY SYSTEM - CONT                                                                                                               
      Mineralization                                  16 (16%)     18 (18%)     14 (14%)     17 (17%)     16 (16%)                  
      Nephropathy                                      1 (1%)       1 (1%)       2 (2%)       1 (1%)       2 (2%)                   
      Artery, Inflammation, Chronic                    1 (1%)                                                                       
      Bilateral, Hydronephrosis                                     1 (1%)                                                          
      Bilateral, Mineralization                       23 (23%)     10 (10%)     19 (19%)     14 (14%)     25 (25%)                  
      Bilateral, Nephropathy                          91 (91%)     84 (84%)     87 (87%)     85 (85%)     87 (87%)                  
      Bilateral, Pigmentation                                                    2 (2%)       1 (1%)                                
      Bilateral, Artery, Mineralization                                                                    1 (1%)                   
      Bilateral, Papilla, Necrosis                                  1 (1%)                                 1 (1%)                   
      Bilateral, Pelvis, Inflammation, Acute                                                               1 (1%)                   
      Bilateral, Pelvis, Inflammation, Chronic         1 (1%)                                                                       
      Bilateral, Pelvis, Inflammation, Chronic                                                                                      
          Active                                       1 (1%)                                                                       
      Bilateral, Renal Tubule, Crystals                             1 (1%)                                                          
      Bilateral, Renal Tubule, Degeneration            2 (2%)       2 (2%)       2 (2%)       1 (1%)                                
      Bilateral, Renal Tubule, Pigmentation           29 (29%)     20 (20%)     26 (26%)     23 (23%)     35 (35%)                  
      Papilla, Necrosis                                             1 (1%)                                                          
      Pelvis, Inflammation, Acute                                                                          1 (1%)                   
      Pelvis, Inflammation, Chronic                                 1 (1%)                                                          
      Pelvis, Transitional Epithelium, Hyperplasia     2 (2%)       1 (1%)                                                          
      Renal Tubule, Hyperplasia, Focal                                           1 (1%)                    1 (1%)                   
   Urinary Bladder                                    (99)         (96)         (100)        (100)        (99)                      
      Edema                                            2 (2%)                    1 (1%)                                             
      Hemorrhage                                                                                           1 (1%)                   
      Infiltration Cellular, Lymphocyte                4 (4%)       6 (6%)       3 (3%)       6 (6%)       7 (7%)                   
      Inflammation, Acute                                                        3 (3%)                                             
      Inflammation, Chronic                            2 (2%)       1 (1%)                    1 (1%)                                
      Ulcer                                                         1 (1%)                                                          
      Transitional Epithelium, Hyperplasia             1 (1%)                    1 (1%)                    2 (2%)                   
                                                                                                                                    

a  Number of animals examined microscopically at site and number of animals with lesion                                             

                                                             Page   22                                                              
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