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TDMS Study 89029-06 Pathology Tables

NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00

                                                         MERGED GROUPS




       Facility:  I. I. T. Research Institute

       Chemical CAS #:  ELECTROMAG

       Lock Date:  09/09/97

       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: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
DISPOSITION SUMMARY                                                                                                                 

  Animals Initially in Study                         100          100          100          100          100                        
  Early Deaths                                                                                                                      
    Natural Death                                     23           18           13           18           15                        
    Moribund Sacrifice                                 6            7            6            7            8                        
    Accidently Killed                                  1            1            2            1                                     
  Survivors                                                                                                                         
    Natural Death                                      1                                                                            
    Terminal Sacrifice                                69           74           79           74           77                        

  Animals Examined Microscopically                   100          100          100          100          100                        
                                                                                                                                    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Esophagus                                          (97)         (100)        (99)         (98)         (100)                     
   Gallbladder                                        (70)         (84)         (87)         (79)         (91)                      
      Histiocytic Sarcoma                                           1 (1%)                                 2 (2%)                   
      Rhabdomyosarcoma, Metastatic, Intestine                                                                                       
          Small, Jejunum                               1 (1%)                                                                       
   Intestine Large, Colon                             (82)         (88)         (90)         (90)         (93)                      
      Histiocytic Sarcoma                                                                                  1 (1%)                   
   Intestine Large, Cecum                             (78)         (87)         (90)         (87)         (92)                      
      Histiocytic Sarcoma                              1 (1%)                                                                       
      Leiomyosarcoma                                                                                       1 (1%)                   
      Serosa, Histiocytic Sarcoma                      1 (1%)                                                                       
   Intestine Small, Duodenum                          (77)         (85)         (90)         (87)         (91)                      
      Histiocytic Sarcoma                                                                                  1 (1%)                   
      Leiomyosarcoma                                                             1 (1%)                                             
      Polyp Adenomatous                                1 (1%)                    1 (1%)                                             
   Intestine Small, Jejunum                           (79)         (86)         (89)         (91)         (92)                      
      Histiocytic Sarcoma                                                                                  1 (1%)                   
      Sarcoma, Metastatic, Skin                                                  1 (1%)                                             
      Serosa, Rhabdomyosarcoma, Metastatic,                                                                                         
          Skeletal Muscle                              1 (1%)                                                                       
   Intestine Small, Ileum                             (78)         (85)         (90)         (87)         (93)                      
      Histiocytic Sarcoma                              1 (1%)                                              1 (1%)                   
   Liver                                              (98)         (97)         (98)         (99)         (100)                     
      Hemangiosarcoma                                  1 (1%)       1 (1%)       1 (1%)                                             
      Hemangiosarcoma, Metastatic, Spleen                                                     1 (1%)                                
      Hepatocellular Carcinoma                         6 (6%)       5 (5%)       6 (6%)       6 (6%)       6 (6%)                   
      Hepatocellular Carcinoma, Multiple                                         1 (1%)                                             
      Hepatocellular Adenoma                          15 (15%)      8 (8%)      19 (19%)     17 (17%)     11 (11%)                  
      Hepatocellular Adenoma, Multiple                 2 (2%)       2 (2%)       1 (1%)       1 (1%)       2 (2%)                   
      Hepatocholangiocarcinoma                         1 (1%)                                                                       
      Histiocytic Sarcoma                                           2 (2%)       2 (2%)                    6 (6%)                   

                                                             Page   2                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - cont                                                                                                            
      Plasma Cell Tumor Malignant, Metastatic,                                                                                      
           Spleen                                      1 (1%)                                                                       
      Plasma Cell Tumor Malignant, Metastatic,                                                                                      
           Uncertain Primary Site                                                2 (2%)       1 (1%)       1 (1%)                   
   Mesentery                                          (36)         (27)         (30)         (30)         (53)                      
      Histiocytic Sarcoma                                                                                  4 (8%)                   
      Leiomyosarcoma, Metastatic, Intestine Small,                                                                                  
           Duodenum                                                              1 (3%)                                             
      Liposarcoma                                                   3 (11%)      1 (3%)                    1 (2%)                   
      Osteosarcoma, Metastatic, Uncertain Primary                                                                                   
          Site                                                                                             1 (2%)                   
      Plasma Cell Tumor Malignant, Metastatic,                                                                                      
           Uncertain Primary Site                                                                          1 (2%)                   
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle    2 (6%)                                                                       
      Sarcoma                                          1 (3%)       2 (7%)                                 1 (2%)                   
   Pancreas                                           (87)         (94)         (96)         (94)         (95)                      
      Histiocytic Sarcoma                                                                                  3 (3%)                   
      Rhabdomyosarcoma, Metastatic, Uncertain                                                                                       
          Primary Site                                                                        1 (1%)                                
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle    1 (1%)       1 (1%)                                                          
      Sarcoma, Metastatic, Mesentery                                1 (1%)                                                          
      Sarcoma, Metastatic, Skin                                                  1 (1%)                                             
   Salivary Glands                                    (94)         (98)         (97)         (98)         (99)                      
      Carcinoma                                        1 (1%)                                                                       
      Histiocytic Sarcoma                                           1 (1%)                                 2 (2%)                   
   Stomach, Forestomach                               (91)         (92)         (93)         (94)         (97)                      
      Basal Cell Adenoma                                                                      1 (1%)                                
      Sarcoma                                                                    1 (1%)                                             
      Squamous Cell Carcinoma                                                                              1 (1%)                   
      Squamous Cell Papilloma                          1 (1%)       1 (1%)                    1 (1%)                                
   Stomach, Glandular                                 (86)         (90)         (93)         (93)         (94)                      
      Osteosarcoma, Metastatic, Uncertain Primary                                                                                   
          Site                                                                                             1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (98)         (100)        (94)         (99)         (96)                      
   Heart                                              (98)         (100)        (100)        (99)         (100)                     
      Hemangiosarcoma                                                                                      1 (1%)                   
      Histiocytic Sarcoma                                                                                  2 (2%)                   
      Osteosarcoma, Metastatic, Bone                                1 (1%)                                                          
      Sarcoma, Metastatic, Skin                                                                            1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    

                                                             Page   3                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (92)         (98)         (99)         (99)         (99)                      
      Histiocytic Sarcoma                                                                                  2 (2%)                   
      Capsule, Adenoma                                                           2 (2%)                                             
      Capsule, Rhabdomyosarcoma, Metastatic,                                                                                        
          Skeletal Muscle                                           1 (1%)                                                          
      Capsule, Sarcoma                                 1 (1%)                                                                       
   Adrenal Medulla                                    (90)         (95)         (97)         (97)         (98)                      
      Pheochromocytoma Benign                                       3 (3%)                    2 (2%)       2 (2%)                   
      Bilateral, Histiocytic Sarcoma                                                                       1 (1%)                   
      Bilateral, Pheochromocytoma Benign                                         1 (1%)                                             
   Islets, Pancreatic                                 (87)         (95)         (94)         (94)         (94)                      
      Adenoma                                          2 (2%)                    7 (7%)       2 (2%)       3 (3%)                   
      Histiocytic Sarcoma                                                                                  2 (2%)                   
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                 1 (1%)                                                          
   Parathyroid Gland                                  (63)         (53)         (53)         (53)         (58)                      
   Pineal Gland                                       (52)         (37)         (67)         (61)         (61)                      
      Histiocytic Sarcoma                                                                                  2 (3%)                   
   Pituitary Gland                                    (83)         (92)         (87)         (89)         (93)                      
      Histiocytic Sarcoma                                                                                  1 (1%)                   
      Pars Distalis, Adenoma                          16 (19%)     17 (18%)     18 (21%)     21 (24%)     15 (16%)                  
      Pars Distalis, Adenoma, Multiple                 1 (1%)                    2 (2%)                    1 (1%)                   
      Pars Distalis, Histiocytic Sarcoma                                                                   1 (1%)                   
      Pars Intermedia, Adenoma                         1 (1%)                                              1 (1%)                   
   Thyroid Gland                                      (92)         (99)         (98)         (98)         (98)                      
      Adenoma                                          1 (1%)       1 (1%)       2 (2%)                    1 (1%)                   
      Adenoma, Multiple                                1 (1%)                                                                       
      Histiocytic Sarcoma                                                                                  1 (1%)                   
      Bilateral, Adenoma                                                                      1 (1%)                                
      C-Cell, Adenoma                                                                                      1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   Peritoneum                                                                   (1)                                                 
   Tissue NOS                                         (1)          (1)          (3)                                                 
      Leiomyosarcoma, Metastatic, Intestine Small,                                                                                  
           Duodenum                                                              1 (33%)                                            
      Rhabdomyosarcoma                                 1 (100%)                                                                     
      Sarcoma                                                       1 (100%)     1 (33%)                                            
      Schwannoma Benign                                                          1 (33%)                                            
____________________________________________________________________________________________________________________________________
                                                                                                                                    

                                                             Page   4                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Clitoral Gland                                     (89)         (84)         (85)         (84)         (82)                      
      Bilateral, Histiocytic Sarcoma                                                                       1 (1%)                   
      Bilateral, Sarcoma                                                         1 (1%)                                             
   Ovary                                              (79)         (91)         (95)         (94)         (96)                      
      Cystadenoma                                      3 (4%)       3 (3%)       2 (2%)       2 (2%)                                
      Granulosa Cell Tumor Benign                      2 (3%)       3 (3%)       1 (1%)                                             
      Hemangioma                                                    1 (1%)                    1 (1%)       2 (2%)                   
      Hemangiosarcoma                                  1 (1%)                                 1 (1%)                                
      Histiocytic Sarcoma                                           1 (1%)                                                          
      Luteoma                                                       1 (1%)       1 (1%)                                             
      Rhabdomyosarcoma, Metastatic, Intestine                                                                                       
          Small, Jejunum                               1 (1%)                                                                       
      Bilateral, Histiocytic Sarcoma                                                                       1 (1%)                   
      Bilateral, Luteoma                               1 (1%)                                              1 (1%)                   
   Uterus                                             (92)         (97)         (98)         (99)         (100)                     
      Hemangioma                                                                 1 (1%)                                             
      Hemangiosarcoma                                               1 (1%)                    1 (1%)                                
      Lymphangioma                                                                            1 (1%)                                
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle    1 (1%)                                                                       
      Bilateral, Histiocytic Sarcoma                                                                       1 (1%)                   
      Cervix, Histiocytic Sarcoma                                                                          1 (1%)                   
      Endometrium, Polyp Stromal                       1 (1%)       1 (1%)                    1 (1%)                                
   Vagina                                                                                    (1)          (1)                       
      Hemangiosarcoma                                                                         1 (100%)                              
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
   Bone Marrow                                        (96)         (99)         (97)         (99)         (100)                     
      Histiocytic Sarcoma                              1 (1%)                                              1 (1%)                   
      Sarcoma                                                       1 (1%)                                                          
   Lymph Node                                         (19)         (15)         (4)          (14)         (12)                      
      Histiocytic Sarcoma                                                                                  1 (8%)                   
      Sarcoma, Metastatic, Skin                        1 (5%)       1 (7%)                                                          
      Schwannoma Malignant, Metastatic, Skin           1 (5%)                                                                       
      Bronchial, Histiocytic Sarcoma                   1 (5%)                                                                       
      Iliac, Sarcoma, Metastatic, Skin                              1 (7%)                                                          
      Inguinal, Histiocytic Sarcoma                    1 (5%)                                              1 (8%)                   
      Lumbar, Histiocytic Sarcoma                                   2 (13%)                                2 (17%)                  
      Mediastinal, Histiocytic Sarcoma                 2 (11%)      1 (7%)                                 1 (8%)                   
      Renal, Histiocytic Sarcoma                       1 (5%)       2 (13%)                                                         
   Lymph Node, Mandibular                             (84)         (94)         (89)         (91)         (92)                      
      Histiocytic Sarcoma                              2 (2%)       1 (1%)                                 2 (2%)                   
   Lymph Node, Mesenteric                             (83)         (88)         (89)         (92)         (95)                      
      Histiocytic Sarcoma                              2 (2%)       2 (2%)                                 4 (4%)                   
      Plasma Cell Tumor Malignant                                                             1 (1%)                                

                                                             Page   5                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
HEMATOPOIETIC SYSTEM - cont                                                                                                         
      Rhabdomyosarcoma, Metastatic, Tissue NOS         1 (1%)                                                                       
      Rhabdomyosarcoma, Metastatic, Uncertain                                                                                       
          Primary Site                                                                        1 (1%)                                
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                 1 (1%)                                                          
   Spleen                                             (91)         (93)         (95)         (93)         (99)                      
      Hemangiosarcoma                                                                         1 (1%)                                
      Histiocytic Sarcoma                              2 (2%)       2 (2%)       2 (2%)                    4 (4%)                   
      Plasma Cell Tumor Malignant                      1 (1%)                    1 (1%)       1 (1%)                                
   Thymus                                             (78)         (92)         (84)         (75)         (89)                      
      Histiocytic Sarcoma                              1 (1%)       2 (2%)                                 3 (3%)                   
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                 1 (1%)                                                          
      Sarcoma, Metastatic, Skin                                     1 (1%)                                                          
      Thymoma Benign                                   1 (1%)       1 (1%)                                                          
      Thymoma Malignant                                             1 (1%)                                                          
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Mammary Gland                                      (94)         (98)         (99)         (99)         (98)                      
      Adenoma                                                                    1 (1%)       2 (2%)       1 (1%)                   
      Carcinoma                                        1 (1%)                                              1 (1%)                   
      Histiocytic Sarcoma                                                                                  1 (1%)                   
   Skin                                               (99)         (100)        (100)        (100)        (100)                     
      Basal Cell Carcinoma                             1 (1%)                                                                       
      Fibrosarcoma                                                                                         1 (1%)                   
      Hemangioma                                                    1 (1%)                    1 (1%)                                
      Hemangiosarcoma                                               1 (1%)                    1 (1%)       2 (2%)                   
      Rhabdomyosarcoma, Metastatic, Uncertain                                                                                       
          Primary Site                                                                        1 (1%)                                
      Sarcoma                                          4 (4%)       5 (5%)       2 (2%)       3 (3%)       4 (4%)                   
      Schwannoma Malignant                             2 (2%)       1 (1%)       4 (4%)       1 (1%)       2 (2%)                   
      Trichoepithelioma                                                          1 (1%)                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (100)        (100)        (99)         (99)         (99)                      
      Femur, Hemangiosarcoma, Metastatic, Spleen                                              1 (1%)                                
      Femur, Osteosarcoma                                           1 (1%)                                                          
      Sternum, Sarcoma, Metastatic, Mesentery                       1 (1%)                                                          
      Vertebra, Osteosarcoma                           1 (1%)                                                                       
   Skeletal Muscle                                    (7)          (3)          (3)          (4)          (4)                       
      Hemangiosarcoma, Metastatic, Heart                                                                   1 (25%)                  
      Osteosarcoma, Metastatic, Uncertain Primary                                                                                   
          Site                                                                                             1 (25%)                  
      Rhabdomyosarcoma                                 3 (43%)      1 (33%)                                1 (25%)                  
____________________________________________________________________________________________________________________________________

                                                             Page   6                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (99)         (100)        (98)         (98)         (100)                     
      Ventricle, Hamartoma, LIPOMATOUS                              1 (1%)       2 (2%)                    1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Lung                                               (95)         (100)        (99)         (99)         (100)                     
      Alveolar/Bronchiolar Adenoma                     9 (9%)       6 (6%)                    5 (5%)       6 (6%)                   
      Alveolar/Bronchiolar Carcinoma                   2 (2%)       6 (6%)       2 (2%)       1 (1%)       1 (1%)                   
      Alveolar/Bronchiolar Carcinoma, Multiple                                                1 (1%)                                
      Basal Cell Carcinoma, Metastatic, Skin           1 (1%)                                                                       
      Hepatocellular Carcinoma, Metastatic, Liver                   2 (2%)                    1 (1%)                                
      Histiocytic Sarcoma                              1 (1%)       2 (2%)       2 (2%)                    3 (3%)                   
      Osteosarcoma, Metastatic, Bone                   1 (1%)       1 (1%)                                                          
      Plasma Cell Tumor Malignant, Metastatic,                                                                                      
           Uncertain Primary Site                                                                          1 (1%)                   
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                 1 (1%)                                                          
      Sarcoma, Metastatic, Mesentery                                                                       1 (1%)                   
      Sarcoma, Metastatic, Skin                        1 (1%)       1 (1%)       1 (1%)       1 (1%)       2 (2%)                   
      Mediastinum, Alveolar/Bronchiolar Carcinoma,                                                                                  
           Metastatic, Lung                                         1 (1%)                                                          
      Mediastinum, Histiocytic Sarcoma                                           1 (1%)                                             
      Mediastinum, Osteosarcoma, Metastatic, Bone                   1 (1%)                                                          
      Mediastinum, Schwannoma Malignant,                                                                                            
          Metastatic, Skin                                                       1 (1%)                                             
      Serosa, Sarcoma, Metastatic, Mesentery                        1 (1%)                                                          
   Nose                                               (99)         (100)        (99)         (100)        (99)                      
   Trachea                                            (94)         (100)        (98)         (99)         (98)                      
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Harderian Gland                                    (98)         (97)         (99)         (96)         (97)                      
      Adenoma                                          9 (9%)       7 (7%)      14 (14%)     12 (13%)     12 (12%)                  
      Carcinoma                                        2 (2%)                                                                       
      Histiocytic Sarcoma                                                                                  1 (1%)                   
      Bilateral, Adenoma                               1 (1%)       1 (1%)                                 1 (1%)                   
   Lacrimal Gland                                                                            (1)                                    
      Bilateral, Sarcoma                                                                      1 (100%)                              
____________________________________________________________________________________________________________________________________
                                                                                                                                    

                                                             Page   7                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (92)         (96)         (98)         (98)         (99)                      
      Histiocytic Sarcoma                                                        1 (1%)                    1 (1%)                   
      Osteosarcoma, Metastatic, Bone                                1 (1%)                                                          
      Plasma Cell Tumor Malignant, Metastatic,                                                                                      
           Uncertain Primary Site                                                                          1 (1%)                   
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                 1 (1%)                                                          
      Bilateral, Histiocytic Sarcoma                                1 (1%)                                 3 (3%)                   
   Urinary Bladder                                    (79)         (87)         (94)         (89)         (92)                      
      Carcinoma                                                     1 (1%)                                                          
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SYSTEMIC LESIONS                                                                                                                   

   Multiple Organs                                   *(100)       *(100)       *(100)       *(100)       *(100)                     
      Histiocytic Sarcoma                              2 (2%)       2 (2%)       2 (2%)                    6 (6%)                   
      Lymphoma Malignant                              32 (32%)     31 (31%)     22 (22%)     26 (26%)     20 (20%)                  
      Mesothelioma Malignant                                                     1 (1%)                                             
____________________________________________________________________________________________________________________________________

                                                                                                                                    
     *   Number of animals with any tissue examined microscopically                                                                 

                                                             Page   8                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
TUMOR SUMMARY                                                                                                                       
                                                                                                                                    
   Total Animals with Primary Neoplasms (b)            78          80          72          71          68                           
     Total Primary Neoplasms                          132         122         124         117         110                           
                                                                                                                                    
   Total Animals with Benign Neoplasms                 52          49          54          49          44                           
     Total Benign Neoplasms                            68          58          77          71          61                           
                                                                                                                                    
   Total Animals with Malignant Neoplasms              55          58          38          38          44                           
     Total Malignant Neoplasms                         64          64          47          46          49                           
                                                                                                                                    
   Total Animals with Metastatic Neoplasms              9           8           5           5           6                           
     Total Metastatic Neoplasm                         14          21           8           8          12                           
                                                                                                                                    
   Total Animals with Malignant Neoplasms                                       2           2           2                           
   Uncertain Primary Site                                                                                                           
                                                                                                                                    
   Total Animals with Neoplasms Uncertain-                                                                                          
   Benign or Malignant                                                                                                              
     Total Uncertain Neoplasms                                                                                                      
                                                                                                                                    

____________________________________________________________________________________________________________________________________
a  Number of animals examined microscopically at site and number of animals with lesion                                             
b  Primary tumors: all tumors except metastatic tumors                                                                              

                                                             Page   9                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
DISPOSITION SUMMARY                                                                                                                 

  Animals Initially in Study                         100          100          100          100          100                        
  Early Deaths                                                                                                                      
    Natural Death                                     13           15           10           24           18                        
    Moribund Sacrifice                                11           13            6           14            8                        
  Survivors                                                                                                                         
    Terminal Sacrifice                                76           72           84           62           73                        
    Natural Death                                                                                          1                        

  Animals Examined Microscopically                   100          100          100          100          100                        
                                                                                                                                    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Esophagus                                          (97)         (97)         (98)         (96)         (99)                      
      Periesophageal Tissue, Sarcoma, Metastatic,                                                                                   
           Uncertain Primary Site                                                             1 (1%)                                
   Gallbladder                                        (84)         (83)         (84)         (75)         (82)                      
      Adenoma                                                       1 (1%)                                                          
      Carcinoma, Metastatic, Intestine Small,                                                                                       
          Duodenum                                                  1 (1%)                                                          
   Intestine Large, Colon                             (93)         (94)         (92)         (83)         (85)                      
   Intestine Large, Rectum                            (93)         (90)         (93)         (81)         (87)                      
   Intestine Large, Cecum                             (90)         (89)         (92)         (81)         (85)                      
   Intestine Small, Duodenum                          (89)         (88)         (92)         (79)         (84)                      
      Carcinoma                                                     2 (2%)       1 (1%)                    1 (1%)                   
      Polyp Adenomatous                                                          2 (2%)                    1 (1%)                   
   Intestine Small, Jejunum                           (89)         (94)         (93)         (80)         (85)                      
      Carcinoma                                        1 (1%)       1 (1%)       3 (3%)       1 (1%)                                
   Intestine Small, Ileum                             (91)         (89)         (92)         (81)         (84)                      
      Carcinoma                                                                               1 (1%)                                
   Liver                                              (100)        (100)        (100)        (98)         (99)                      
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (1%)                                             
      Carcinoma, Metastatic, Pancreas                                                         1 (1%)                                
      Carcinoma, Metastatic, Intestine Small,                                                                                       
          Duodenum                                                  1 (1%)                                                          
      Hemangiosarcoma                                  4 (4%)       2 (2%)       3 (3%)       5 (5%)       4 (4%)                   
      Hemangiosarcoma, Metastatic, Skin                                          1 (1%)                                             
      Hemangiosarcoma, Metastatic, Spleen                           1 (1%)                    1 (1%)                                
      Hepatoblastoma                                   2 (2%)       2 (2%)       1 (1%)       4 (4%)       5 (5%)                   
      Hepatocellular Carcinoma                        19 (19%)     14 (14%)     20 (20%)     15 (15%)     23 (23%)                  
      Hepatocellular Adenoma                          28 (28%)     26 (26%)     32 (32%)     21 (21%)     30 (30%)                  
      Hepatocellular Adenoma, Multiple                 2 (2%)                                              2 (2%)                   
      Hepatocholangiocarcinoma                                      1 (1%)                                                          
      Histiocytic Sarcoma                              1 (1%)       1 (1%)       1 (1%)                    1 (1%)                   
      Rhabdomyosarcoma, Metastatic, Heart                                        1 (1%)                                             

                                                             Page  10                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - cont                                                                                                            
   Mesentery                                          (13)         (16)         (8)          (10)         (9)                       
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (13%)                                            
      Carcinoma, Metastatic, Intestine Small,                                                                                       
          Duodenum                                                  1 (6%)                                                          
      Hemangiosarcoma                                               1 (6%)       1 (13%)                                            
      Hepatocellular Carcinoma, Metastatic, Liver                                                          1 (11%)                  
      Rhabdomyosarcoma, Metastatic, Heart                                        1 (13%)                                            
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                                           1 (10%)                               
      Sarcoma, Metastatic, Uncertain Primary Site                                             1 (10%)                               
   Oral Mucosa                                                     (2)                                                              
      Squamous Cell Carcinoma                                       1 (50%)                                                         
   Pancreas                                           (99)         (99)         (98)         (95)         (98)                      
      Carcinoma                                                                               1 (1%)                                
      Carcinoma, Metastatic, Islets, Pancreatic                                               1 (1%)                                
      Carcinoma, Metastatic, Intestine Small,                                                                                       
          Duodenum                                                  1 (1%)                                                          
      Rhabdomyosarcoma, Metastatic, Skeletal Muscle                                           1 (1%)                                
      Sarcoma                                                                                 1 (1%)                                
      Schwannoma Malignant, Metastatic, Skin                                                  1 (1%)                                
   Salivary Glands                                    (99)         (99)         (98)         (96)         (99)                      
   Stomach, Forestomach                               (99)         (98)         (97)         (96)         (99)                      
      Sarcoma                                                       1 (1%)                                                          
      Squamous Cell Carcinoma                                                                              1 (1%)                   
      Squamous Cell Papilloma                                                                 1 (1%)                                
   Stomach, Glandular                                 (94)         (93)         (97)         (87)         (93)                      
      Serosa, Hemangiosarcoma, Metastatic,                                                                                          
          Mesentery                                                 1 (1%)                                                          
   Tongue                                                                                                 (1)                       
      Squamous Cell Papilloma                                                                              1 (100%)                 
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (97)         (94)         (100)        (96)         (98)                      
      Aorta, Adventitia, Rhabdomyosarcoma,                                                                                          
          Metastatic, Heart                                                                                1 (1%)                   
      Aorta, Adventitia, Sarcoma, Metastatic,                                                                                       
          Uncertain Primary Site                                                              1 (1%)                                
   Heart                                              (100)        (100)        (100)        (99)         (100)                     
      Carcinoma, Metastatic, Kidney                    1 (1%)                                                                       
      Hemangiosarcoma                                               2 (2%)                                                          
      Hemangiosarcoma, Metastatic, Liver               1 (1%)                    2 (2%)       2 (2%)                                
      Hemangiosarcoma, Metastatic, Spleen              1 (1%)                                 1 (1%)       1 (1%)                   
      Rhabdomyosarcoma                                                           1 (1%)                    1 (1%)                   
      Sarcoma, Metastatic, Uncertain Primary Site                                             1 (1%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    

                                                             Page  11                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (99)         (96)         (99)         (94)         (97)                      
      Adenoma                                          3 (3%)                    1 (1%)       5 (5%)                                
      Bilateral, Rhabdomyosarcoma, Metastatic,                                                                                      
           Skeletal Muscle                                                                    1 (1%)                                
      Capsule, Carcinoma, Metastatic, Intestine                                                                                     
          Small, Duodenum                                           1 (1%)                                                          
   Adrenal Medulla                                    (98)         (93)         (99)         (91)         (96)                      
      Pheochromocytoma Malignant                       2 (2%)                                                                       
      Pheochromocytoma Benign                          1 (1%)                    1 (1%)                                             
      Bilateral, Rhabdomyosarcoma, Metastatic,                                                                                      
           Skeletal Muscle                                                                    1 (1%)                                
   Islets, Pancreatic                                 (99)         (99)         (98)         (97)         (98)                      
      Adenoma                                          1 (1%)       3 (3%)       1 (1%)                    1 (1%)                   
      Carcinoma                                        2 (2%)                    1 (1%)       1 (1%)                                
      Hemangiosarcoma, Metastatic, Mesentery                        1 (1%)                                                          
   Pineal Gland                                       (55)         (58)         (62)         (45)         (57)                      
   Pituitary Gland                                    (83)         (84)         (82)         (84)         (86)                      
      Pars Distalis, Adenoma                                        1 (1%)       1 (1%)                                             
      Pars Intermedia, Adenoma                                                   1 (1%)                                             
   Thyroid Gland                                      (99)         (98)         (98)         (97)         (98)                      
      Adenoma                                          1 (1%)       1 (1%)                    1 (1%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   Tissue NOS                                         (2)          (4)          (1)          (1)                                    
      Alveolar/Bronchiolar Carcinoma, Metastatic,                                                                                   
           Lung                                        1 (50%)                                                                      
      Histiocytic Sarcoma                                           1 (25%)                                                         
      Schwannoma Malignant                                                                    1 (100%)                              
      Pelvic, Sarcoma                                               1 (25%)                                                         
      Thoracic, Fat, Hemangioma                                                  1 (100%)                                           
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Epididymis                                         (98)         (99)         (99)         (96)         (98)                      
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (1%)                                             
      Hemangiosarcoma, Metastatic, Skin                                          1 (1%)                                             
      Histiocytic Sarcoma                                           1 (1%)                                                          
      Bilateral, Carcinoma, Metastatic, Intestine                                                                                   
          Small, Duodenum                                           1 (1%)                                                          
      Bilateral, Sarcoma, Metastatic, Pancreas                                                1 (1%)                                
   Preputial Gland                                    (98)         (98)         (100)        (95)         (99)                      
   Prostate                                           (98)         (92)         (94)         (94)         (92)                      
      Adenoma                                                                                              1 (1%)                   

                                                             Page  12                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
GENITAL SYSTEM - cont                                                                                                               
      Histiocytic Sarcoma                                                                     1 (1%)                                
      Sarcoma, Metastatic, Pancreas                                                           1 (1%)                                
   Seminal Vesicle                                    (99)         (97)         (98)         (98)         (98)                      
      Carcinoma                                                     1 (1%)                                                          
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (1%)                                             
      Hemangiosarcoma, Metastatic, Mesentery                        1 (1%)                                                          
      Bilateral, Sarcoma, Metastatic, Pancreas                                                1 (1%)                                
   Testes                                             (99)         (98)         (100)        (96)         (98)                      
      Adenoma                                          1 (1%)       1 (1%)       2 (2%)       1 (1%)       1 (1%)                   
      Hemangiosarcoma                                                            1 (1%)                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
   Bone Marrow                                        (99)         (99)         (99)         (99)         (100)                     
      Hemangiosarcoma, Metastatic, Liver                                                      2 (2%)                                
      Hemangiosarcoma, Metastatic, Skin                                          1 (1%)                                             
      Hemangiosarcoma, Metastatic, Spleen                           1 (1%)                    1 (1%)       1 (1%)                   
      Mast Cell Tumor Benign                           1 (1%)                                                                       
   Lymph Node                                         (6)          (6)          (5)          (3)          (7)                       
      Alveolar/Bronchiolar Carcinoma, Metastatic,                                                                                   
           Lung                                                                                            1 (14%)                  
      Hemangiosarcoma                                                                                      1 (14%)                  
      Hepatocellular Carcinoma, Metastatic, Liver                                                          1 (14%)                  
      Histiocytic Sarcoma                              1 (17%)                                                                      
      Plasma Cell Tumor Malignant                                   1 (17%)                                                         
      Bronchial, Alveolar/Bronchiolar Carcinoma,                                                                                    
           Metastatic, Lung                                                      1 (20%)                                            
      Lumbar, Hemangiosarcoma, Metastatic,                                                                                          
          Mesentery                                                 1 (17%)                                                         
      Lumbar, Histiocytic Sarcoma                                                             1 (33%)                               
   Lymph Node, Mandibular                             (92)         (92)         (92)         (89)         (90)                      
      Histiocytic Sarcoma                                                        1 (1%)                                             
   Lymph Node, Mesenteric                             (87)         (90)         (96)         (85)         (92)                      
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (1%)                                             
      Carcinoma, Metastatic, Intestine Small,                                                                                       
          Duodenum                                                  1 (1%)                                                          
      Histiocytic Sarcoma                              1 (1%)                    1 (1%)                                             
      Plasma Cell Tumor Malignant                                   1 (1%)                                                          
      Rhabdomyosarcoma, Metastatic, Heart                                        1 (1%)                    1 (1%)                   
      Sarcoma, Metastatic, Pancreas                                                           1 (1%)                                
      Sarcoma, Metastatic, Uncertain Primary Site                                             1 (1%)                                
   Spleen                                             (99)         (98)         (98)         (93)         (98)                      
      Hemangiosarcoma                                  2 (2%)       5 (5%)                    3 (3%)       1 (1%)                   
      Hemangiosarcoma, Metastatic, Skin                                          1 (1%)                                             
      Histiocytic Sarcoma                                           1 (1%)                                 1 (1%)                   
   Thymus                                             (69)         (68)         (63)         (68)         (60)                      

                                                             Page  13                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
HEMATOPOIETIC SYSTEM - cont                                                                                                         
      Sarcoma, Metastatic, Uncertain Primary Site                                             1 (1%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Skin                                               (99)         (99)         (100)        (100)        (100)                     
      Carcinoma, Metastatic, Harderian Gland                        1 (1%)                                                          
      Hemangiosarcoma                                                            1 (1%)                                             
      Histiocytic Sarcoma                                                        1 (1%)                                             
      Rhabdomyosarcoma, Metastatic, Heart                                        1 (1%)                                             
      Sarcoma                                                                                              1 (1%)                   
      Schwannoma Benign                                             1 (1%)                                                          
      Schwannoma Malignant                                                       1 (1%)       1 (1%)                                
      Squamous Cell Papilloma                                       1 (1%)                                 1 (1%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (97)         (100)        (99)         (99)         (99)                      
      Femur, Hemangiosarcoma, Metastatic, Liver                                  1 (1%)                                             
      Femur, Hemangiosarcoma, Metastatic, Spleen                                                           1 (1%)                   
   Skeletal Muscle                                    (8)          (7)          (2)          (7)          (4)                       
      Hemangiosarcoma, Metastatic, Mesentery                        1 (14%)                                                         
      Rhabdomyosarcoma                                                                        1 (14%)                               
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (100)        (99)         (100)        (99)         (100)                     
      Meninges, Sarcoma                                                          1 (1%)                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Lung                                               (100)        (99)         (100)        (99)         (99)                      
      Alveolar/Bronchiolar Adenoma                    24 (24%)     11 (11%)      7 (7%)      14 (14%)     13 (13%)                  
      Alveolar/Bronchiolar Adenoma, Multiple           2 (2%)                    2 (2%)       2 (2%)       3 (3%)                   
      Alveolar/Bronchiolar Carcinoma                   8 (8%)      11 (11%)     12 (12%)     10 (10%)      9 (9%)                   
      Alveolar/Bronchiolar Carcinoma, Multiple                                                             1 (1%)                   
      Carcinoma, Metastatic, Harderian Gland                        1 (1%)                                                          
      Carcinoma, Metastatic, Islets, Pancreatic                                  1 (1%)                                             
      Carcinoma, Metastatic, Kidney                    1 (1%)                                                                       
      Carcinoma, Metastatic, Pancreas                                                         1 (1%)                                
      Hemangiosarcoma, Metastatic, Liver                            1 (1%)                                                          
      Hemangiosarcoma, Metastatic, Mesentery                        1 (1%)                                                          
      Hepatoblastoma, Metastatic, Liver                                                                    1 (1%)                   
      Hepatocellular Carcinoma, Metastatic, Liver      2 (2%)       5 (5%)       8 (8%)       5 (5%)       9 (9%)                   

                                                             Page  14                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
RESPIRATORY SYSTEM - cont                                                                                                           
      Histiocytic Sarcoma                                                        1 (1%)       1 (1%)                                
      Pheochromocytoma Malignant, Metastatic,                                                                                       
          Adrenal Medulla                              1 (1%)                                                                       
      Rhabdomyosarcoma, Metastatic, Heart                                        1 (1%)                    1 (1%)                   
      Sarcoma, Metastatic, Uncertain Primary Site      1 (1%)                                 1 (1%)                                
      Schwannoma Malignant, Metastatic, Skin                                                  1 (1%)                                
      Arteriole, Hepatoblastoma, Metastatic, Liver                                                         1 (1%)                   
   Nose                                               (99)         (99)         (100)        (97)         (100)                     
      Sinus, Sarcoma, Metastatic, Eye                                                         1 (1%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Eye                                                             (2)                       (2)          (1)                       
      Retrobulbar, Sarcoma                                                                    1 (50%)                               
   Harderian Gland                                    (99)         (99)         (100)        (96)         (99)                      
      Adenoma                                         12 (12%)     14 (14%)     16 (16%)     10 (10%)     11 (11%)                  
      Carcinoma                                                     1 (1%)                                 3 (3%)                   
      Sarcoma, Metastatic, Eye                                                                1 (1%)                                
      Bilateral, Adenoma                                            2 (2%)                    2 (2%)                                
      Bilateral, Carcinoma                                          1 (1%)                                                          
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (99)         (98)         (99)         (96)         (97)                      
      Sarcoma, Metastatic, Pancreas                                                           1 (1%)                                
      Bilateral, Carcinoma                             1 (1%)                                                                       
      Bilateral, Rhabdomyosarcoma, Metastatic,                                                                                      
           Heart                                                                 1 (1%)                                             
      Capsule, Rhabdomyosarcoma, Metastatic, Heart                                                         1 (1%)                   
      Cortex, Rhabdomyosarcoma, Metastatic, Heart                                                          1 (1%)                   
      Renal Tubule, Adenoma                            1 (1%)       2 (2%)                                                          
   Urinary Bladder                                    (98)         (95)         (95)         (93)         (94)                      
      Histiocytic Sarcoma                                                                     1 (1%)                                
      Papilloma                                                                  1 (1%)                                             
      Sarcoma, Metastatic, Pancreas                                                           1 (1%)                                
                                                                                                                                    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SYSTEMIC LESIONS                                                                                                                   

   Multiple Organs                                   *(100)       *(100)       *(100)       *(100)       *(100)                     
      Histiocytic Sarcoma                              1 (1%)       1 (1%)       3 (3%)       1 (1%)       1 (1%)                   
      Leukemia Granulocytic                                                                                1 (1%)                   
      Lymphoma Malignant                               8 (8%)       7 (7%)       4 (4%)       7 (7%)       6 (6%)                   
      Mesothelioma Malignant                                        2 (2%)                    1 (1%)                                
                                                                                                                                    
     *   Number of animals with any tissue examined microscopically                                                                 

                                                             Page  15                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
                                                                                                                                    
 SYSTEMIC LESIONS - cont                                                                                                            

   Multiple Organs                                   *(100)       *(100)       *(100)       *(100)       *(100)                     
____________________________________________________________________________________________________________________________________

                                                             Page  16                                                               
NTP Experiment-Test: 89029-06  INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a)      Report: PEIRPT05
Study Type: CHRONIC                                       MAGNETIC FIELDS (EMF)                                   Date: 01/09/98  
Route: MAGNETIC FIELDS                                                                                            Time: 12:40:00  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          SHAM         .02          2 GAUSS      10           10 GAUSS                     
                                                    CONTROL      GAUSS                     GAUSS          INTER                     
____________________________________________________________________________________________________________________________________
                                                                                                                                    
TUMOR SUMMARY                                                                                                                       
                                                                                                                                    
   Total Animals with Primary Neoplasms (b)            71          81          72          74          76                           
     Total Primary Neoplasms                          127         123         122         112         124                           
                                                                                                                                    
   Total Animals with Benign Neoplasms                 54          50          54          47          52                           
     Total Benign Neoplasms                            77          64          68          57          65                           
                                                                                                                                    
   Total Animals with Malignant Neoplasms              40          49          45          49          48                           
     Total Malignant Neoplasms                         50          59          54          55          59                           
                                                                                                                                    
   Total Animals with Metastatic Neoplasms              8          11          15          17          13                           
     Total Metastatic Neoplasm                          9          23          28          36          22                           
                                                                                                                                    
   Total Animals with Malignant Neoplasms               1                                   1                                       
   Uncertain Primary Site                                                                                                           
                                                                                                                                    
   Total Animals with Neoplasms Uncertain-                                                                                          
   Benign or Malignant                                                                                                              
     Total Uncertain Neoplasms                                                                                                      
                                                                                                                                    

____________________________________________________________________________________________________________________________________
a  Number of animals examined microscopically at site and number of animals with lesion                                             
b  Primary tumors: all tumors except metastatic tumors                                                                              

                                                             Page  17                                                               
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                             ----------              END OF REPORT             ----------                                           
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