Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Share This:
https://ntp.niehs.nih.gov/go/5706

TDMS Study 56111-04 Pathology Tables

NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01
Route: DOSED FEED                                                                                                 Time: 14:40:37

                                                           FINAL/MICE




       Facility:  Battelle Columbus Laboratory

       Chemical CAS #:  14371-10-9

       Lock Date:  06/28/00

       Cage Range:  All

       Reasons For Removal:    All

       Removal Date Range:     All

       Treatment Groups:       Include All


































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

                                                              Page   1


NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
DISPOSITION SUMMARY                                                                                                                 
                                                                                                                                    
  Animals Initially In Study                          50           50           50           50           50                        
  Early Deaths                                                                                                                      
    Natural Death                                      5            6            9            5            3                        
    Moribund Sacrifice                                 2            3            4            1            4                        
  Survivors                                                                                                                         
    Terminal Sacrifice                                42           41           36           44           43                        
    Natural Death                                      1                         1                                                  
                                                                                                                                    
  Animals Examined Microscopically                    50           50           50           50           50                        
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Esophagus                                          (50)         (50)         (50)         (50)         (50)                      
      Hyperkeratosis                                   2 (4%)       1 (2%)       2 (4%)       1 (2%)       1 (2%)                   
   Gallbladder                                        (50)         (50)         (50)         (50)         (50)                      
      Cyst                                             1 (2%)                                                                       
      Inflammation                                     3 (6%)       6 (12%)      5 (10%)      5 (10%)      3 (6%)                   
   Intestine Small, Duodenum                          (50)         (49)         (50)         (50)         (50)                      
      Necrosis                                                      1 (2%)                                                          
      Regeneration                                                  1 (2%)                                                          
   Intestine Small, Jejunum                           (50)         (50)         (50)         (50)         (50)                      
      Ulcer                                            1 (2%)                                                                       
      Epithelium, Atrophy                                           1 (2%)                                                          
      Peyer's Patch, Hyperplasia                                                 1 (2%)                                             
   Intestine Small, Ileum                             (50)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                      1 (2%)                                                                       
      Inflammation                                     1 (2%)                                                                       
      Necrosis                                                      1 (2%)                                                          
   Liver                                              (50)         (49)         (50)         (50)         (50)                      
      Angiectasis                                                                             1 (2%)                                
      Atrophy                                          1 (2%)                                                                       
      Basophilic Focus                                 1 (2%)                                                                       
      Clear Cell Focus                                 1 (2%)       4 (8%)       2 (4%)       1 (2%)                                
      Eosinophilic Focus                               3 (6%)       1 (2%)       2 (4%)                                             
      Fatty Change                                     5 (10%)      4 (8%)       8 (16%)      4 (8%)       7 (14%)                  
      Hematopoietic Cell Proliferation                 4 (8%)       6 (12%)      3 (6%)       2 (4%)       5 (10%)                  
      Infiltration Cellular, Lymphocyte                             1 (2%)                    1 (2%)                                
      Inflammation                                    39 (78%)     42 (86%)     36 (72%)     38 (76%)     41 (82%)                  
      Mixed Cell Focus                                 2 (4%)       1 (2%)       3 (6%)                                             
      Necrosis                                         6 (12%)      2 (4%)       2 (4%)       1 (2%)       3 (6%)                   
      Pigmentation                                     2 (4%)       3 (6%)       4 (8%)       2 (4%)       4 (8%)                   
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    2                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Vacuolization Cytoplasmic                        1 (2%)       1 (2%)       2 (4%)                    1 (2%)                   
      Portal, Infiltration Cellular, Lymphocyte       26 (52%)     32 (65%)     25 (50%)     31 (62%)     26 (52%)                  
   Mesentery                                          (3)          (4)          (5)          (4)          (1)                       
      Inflammation                                                  1 (25%)                                                         
      Fat, Mineralization                                                        2 (40%)                   1 (100%)                 
      Fat, Necrosis                                                 3 (75%)      2 (40%)      1 (25%)      1 (100%)                 
   Pancreas                                           (50)         (50)         (50)         (50)         (50)                      
      Cyst                                             1 (2%)                                 1 (2%)       1 (2%)                   
      Inflammation                                    21 (42%)     25 (50%)     16 (32%)     24 (48%)     18 (36%)                  
   Salivary Glands                                    (48)         (50)         (48)         (49)         (50)                      
      Atrophy                                                                                              1 (2%)                   
      Inflammation                                    25 (52%)     32 (64%)     27 (56%)     27 (55%)     27 (54%)                  
      Mineralization                                                                                       1 (2%)                   
   Stomach, Forestomach                               (50)         (50)         (50)         (50)         (50)                      
      Hyperkeratosis                                   3 (6%)       1 (2%)       1 (2%)       2 (4%)                                
      Hyperplasia                                                                1 (2%)       1 (2%)                                
      Inflammation                                                               1 (2%)                                             
      Ulcer                                            1 (2%)                                              2 (4%)                   
   Stomach, Glandular                                 (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                                                                         1 (2%)                   
      Mineralization                                   1 (2%)       2 (4%)       1 (2%)       1 (2%)       3 (6%)                   
   Tooth                                                           (2)                       (1)          (1)                       
      Malformation                                                  1 (50%)                   1 (100%)     1 (100%)                 
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (50)         (50)         (50)         (50)         (50)                      
      Aorta, Inflammation                              1 (2%)                                 1 (2%)       1 (2%)                   
   Heart                                              (49)         (50)         (50)         (50)         (50)                      
      Cardiomyopathy                                                1 (2%)       1 (2%)                    2 (4%)                   
      Inflammation                                     1 (2%)       1 (2%)       2 (4%)       1 (2%)       2 (4%)                   
      Mineralization                                   1 (2%)       1 (2%)                    1 (2%)       1 (2%)                   
      Artery, Inflammation                                          1 (2%)                                 2 (4%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (50)         (50)         (50)         (50)         (50)                      
      Hematopoietic Cell Proliferation                 2 (4%)       1 (2%)                                                          
      Hyperplasia                                      2 (4%)       2 (4%)       6 (12%)      2 (4%)       2 (4%)                   
      Hypertrophy                                      4 (8%)       4 (8%)       2 (4%)       2 (4%)       1 (2%)                   
      Pigmentation                                    32 (64%)     34 (68%)     26 (52%)     32 (64%)     29 (58%)                  
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    3                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ENDOCRINE SYSTEM - CONT                                                                                                             
      Vacuolization Cytoplasmic                       36 (72%)     34 (68%)     31 (62%)     37 (74%)     33 (66%)                  
      Subcapsular, Hyperplasia                        50 (100%)    49 (98%)     50 (100%)    50 (100%)    49 (98%)                  
   Adrenal Medulla                                    (49)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                      3 (6%)       1 (2%)       3 (6%)       2 (4%)                                
   Islets, Pancreatic                                 (50)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                      1 (2%)       3 (6%)       4 (8%)                    2 (4%)                   
   Parathyroid Gland                                  (41)         (44)         (40)         (41)         (44)                      
      Cyst                                                          1 (2%)                                                          
   Pituitary Gland                                    (48)         (49)         (50)         (49)         (50)                      
      Angiectasis                                      1 (2%)                                                                       
      Cyst                                             1 (2%)                    1 (2%)       2 (4%)                                
      Inflammation                                                                                         1 (2%)                   
      Pars Distalis, Hyperplasia                       5 (10%)      5 (10%)      6 (12%)      2 (4%)       4 (8%)                   
   Thyroid Gland                                      (48)         (50)         (49)         (50)         (50)                      
      Inflammation                                                  2 (4%)                                                          
      Follicle, Cyst                                   7 (15%)      3 (6%)       4 (8%)      10 (20%)      4 (8%)                   
      Follicular Cell, Hyperplasia                                                                         1 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   None                                                                                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Clitoral Gland                                     (50)         (49)         (50)         (49)         (50)                      
      Cyst                                                          1 (2%)                                                          
      Inflammation                                    32 (64%)     35 (71%)     30 (60%)     36 (73%)     33 (66%)                  
      Inflammation, Suppurative                        1 (2%)                                                                       
   Ovary                                              (50)         (50)         (50)         (49)         (50)                      
      Angiectasis                                      1 (2%)                    1 (2%)                    1 (2%)                   
      Cyst                                            13 (26%)      9 (18%)      8 (16%)     11 (22%)     11 (22%)                  
      Cyst, Multiple                                                1 (2%)                                                          
      Inflammation                                     1 (2%)                                 1 (2%)                                
      Inflammation, Suppurative                                                  1 (2%)                                             
      Mineralization                                   1 (2%)       2 (4%)       1 (2%)       1 (2%)       3 (6%)                   
   Oviduct                                            (1)          (1)          (2)          (3)          (4)                       
      Inflammation                                                  1 (100%)                               1 (25%)                  
   Uterus                                             (50)         (50)         (50)         (50)         (50)                      
      Angiectasis                                                                1 (2%)                    1 (2%)                   
      Hydrometra                                       1 (2%)                                 1 (2%)                                
      Inflammation                                     1 (2%)       7 (14%)      3 (6%)       2 (4%)       6 (12%)                  
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    4                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
GENITAL SYSTEM - CONT                                                                                                               
      Ulcer                                                         1 (2%)                                                          
      Endometrium, Hyperplasia, Cystic                43 (86%)     42 (84%)     46 (92%)     41 (82%)     48 (96%)                  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
   Bone Marrow                                        (50)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                     11 (22%)     10 (20%)     10 (20%)     12 (24%)     12 (24%)                  
      Infiltration Cellular, Lymphocyte                1 (2%)                                                                       
   Lymph Node                                         (7)          (5)          (7)          (10)         (7)                       
      Lumbar, Infiltration Cellular, Plasma Cell       1 (14%)                                                                      
      Renal, Ectasia                                   1 (14%)                                                                      
   Lymph Node, Mandibular                             (46)         (47)         (45)         (49)         (47)                      
      Atrophy                                          2 (4%)                                                                       
      Hemorrhage                                       1 (2%)                                                                       
      Hyperplasia                                                                1 (2%)                    1 (2%)                   
   Lymph Node, Mesenteric                             (49)         (49)         (50)         (49)         (50)                      
      Angiectasis                                                                1 (2%)                                             
      Atrophy                                                       1 (2%)                                                          
      Ectasia                                          1 (2%)                                                                       
      Hemorrhage                                                                              1 (2%)                                
      Hyperplasia                                                                             1 (2%)                                
      Infiltration Cellular, Plasma Cell                                                      1 (2%)                                
      Inflammation                                                               1 (2%)                                             
   Spleen                                             (48)         (49)         (50)         (50)         (50)                      
      Hematopoietic Cell Proliferation                11 (23%)     16 (33%)     15 (30%)      9 (18%)     11 (22%)                  
      Hyperplasia, Lymphoid                            1 (2%)                    1 (2%)                                             
      Infiltration Cellular, Plasma Cell                                         1 (2%)                                             
      Pigmentation                                                               1 (2%)                                             
      Lymphoid Follicle, Atrophy                                                 2 (4%)       2 (4%)                                
      Lymphoid Follicle, Hyperplasia                   2 (4%)       4 (8%)       1 (2%)                    4 (8%)                   
   Thymus                                             (46)         (47)         (46)         (47)         (47)                      
      Atrophy                                          5 (11%)      2 (4%)       3 (7%)       2 (4%)       1 (2%)                   
      Hyperplasia                                                                             1 (2%)                                
      Inflammation                                     1 (2%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Mammary Gland                                      (50)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                      1 (2%)                                              1 (2%)                   
      Inflammation                                                                            1 (2%)                                
      Duct, Dilatation                                                           1 (2%)       1 (2%)       1 (2%)                   
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    5                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
INTEGUMENTARY SYSTEM - CONT                                                                                                         
   Skin                                               (50)         (50)         (50)         (50)         (50)                      
      Hyperkeratosis                                                                                       1 (2%)                   
      Subcutaneous Tissue, Inflammation                1 (2%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (50)         (50)         (50)         (50)         (50)                      
      Myelofibrosis                                   24 (48%)     27 (54%)     23 (46%)     34 (68%)     38 (76%)                  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (49)         (50)         (50)         (50)         (50)                      
      Infiltration Cellular, Lymphocyte                                                                    1 (2%)                   
      Choroid Plexus, Infiltration Cellular,                                                                                        
          Lymphocyte                                                             1 (2%)                                             
      Choroid Plexus, Inflammation                                                                         1 (2%)                   
      Medulla, Degeneration                                                                                1 (2%)                   
      Meninges, Infiltration Cellular, Lymphocyte                   1 (2%)                    1 (2%)                                
      Meninges, Inflammation                           2 (4%)                                                                       
   Spinal Cord                                                                                            (1)                       
      Degeneration                                                                                         1 (100%)                 
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Lung                                               (50)         (50)         (50)         (50)         (50)                      
      Infiltration Cellular, Lymphocyte                1 (2%)                                 1 (2%)                                
      Inflammation                                                  1 (2%)                    3 (6%)                                
      Inflammation, Granulomatous                      1 (2%)                                                                       
      Metaplasia, Osseous                              1 (2%)                                                                       
      Alveolar Epithelium, Hyperplasia                 1 (2%)       1 (2%)                    2 (4%)       1 (2%)                   
      Perivascular, Infiltration Cellular,                                                                                          
          Mononuclear Cell                                                       1 (2%)                    1 (2%)                   
   Nose                                               (49)         (50)         (50)         (50)         (50)                      
      Foreign Body                                     1 (2%)       1 (2%)                                                          
      Inflammation                                     2 (4%)       5 (10%)      3 (6%)       4 (8%)       2 (4%)                   
      Glands, Inflammation, Focal, Granulomatous                    1 (2%)                                                          
      Nasolacrimal Duct, Inflammation                  2 (4%)       1 (2%)                                                          
      Olfactory Epithelium, Degeneration, Hyaline     17 (35%)     23 (46%)     25 (50%)     22 (44%)                               
      Olfactory Epithelium, Pigmentation                                                      8 (16%)     46 (92%)                  
   Trachea                                            (48)         (50)         (49)         (50)         (50)                      
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    6                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE FEMALE                        UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
RESPIRATORY SYSTEM - CONT                                                                                                           
      Inflammation                                                                                         1 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Eye                                                                          (1)          (1)                                    
      Cornea, Hyperplasia                                                        1 (100%)                                           
      Cornea, Inflammation                                                       1 (100%)     1 (100%)                              
   Harderian Gland                                    (2)          (1)          (4)          (5)                                    
      Inflammation                                     2 (100%)                  1 (25%)      2 (40%)                               
   Lacrimal Gland                                                                            (1)                                    
      Inflammation                                                                            1 (100%)                              
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (50)         (50)         (50)         (50)         (50)                      
      Atrophy                                                                                 1 (2%)       1 (2%)                   
      Cyst                                                                                                 1 (2%)                   
      Hydronephrosis                                   1 (2%)       1 (2%)                    1 (2%)                                
      Infarct                                          1 (2%)       1 (2%)                                 2 (4%)                   
      Infiltration Cellular, Lymphocyte               37 (74%)     44 (88%)     39 (78%)     42 (84%)     37 (74%)                  
      Inflammation                                     1 (2%)       1 (2%)       1 (2%)       1 (2%)       1 (2%)                   
      Metaplasia, Osseous                                           1 (2%)       1 (2%)       3 (6%)       1 (2%)                   
      Mineralization                                   4 (8%)       4 (8%)       1 (2%)       2 (4%)       6 (12%)                  
      Necrosis                                         1 (2%)                                                                       
      Nephropathy                                      7 (14%)     11 (22%)      4 (8%)      12 (24%)      8 (16%)                  
      Artery, Inflammation                                                                                 1 (2%)                   
      Papilla, Necrosis                                                                       1 (2%)                                
      Renal Tubule, Dilatation                        24 (48%)     25 (50%)     30 (60%)     22 (44%)     32 (64%)                  
   Urinary Bladder                                    (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                    34 (68%)     33 (66%)     39 (78%)     33 (66%)     33 (66%)                  
                                                                                                                                    
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page    7                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
DISPOSITION SUMMARY                                                                                                                 
                                                                                                                                    
  Animals Initially In Study                          50           50           50           50           50                        
  Early Deaths                                                                                                                      
    Natural Death                                      6            3            4            9                                     
    Moribund Sacrifice                                                                        2            1                        
  Survivors                                                                                                                         
    Terminal Sacrifice                                43           45           46           39           49                        
    Natural Death                                      1            2                                                               
                                                                                                                                    
  Animals Examined Microscopically                    50           50           50           50           50                        
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ALIMENTARY SYSTEM                                                                                                                  
                                                                                                                                    
   Esophagus                                          (50)         (50)         (50)         (50)         (50)                      
      Hyperkeratosis                                   4 (8%)       2 (4%)       2 (4%)       4 (8%)                                
   Gallbladder                                        (50)         (50)         (50)         (50)         (49)                      
      Inflammation                                     2 (4%)       4 (8%)       2 (4%)       2 (4%)       4 (8%)                   
   Intestine Large, Colon                             (50)         (50)         (50)         (50)         (50)                      
      Epithelium, Hyperplasia                                                    1 (2%)                                             
   Intestine Large, Rectum                            (50)         (50)         (50)         (50)         (50)                      
      Edema                                                                      1 (2%)                                             
   Intestine Large, Cecum                             (50)         (50)         (50)         (50)         (50)                      
      Lymphoid Tissue, Hyperplasia                                                                         1 (2%)                   
   Intestine Small, Duodenum                          (50)         (50)         (50)         (50)         (49)                      
      Epithelium, Hyperplasia                                                                 1 (2%)                                
   Intestine Small, Jejunum                           (50)         (50)         (50)         (50)         (50)                      
      Atrophy                                                                                 1 (2%)                                
      Cyst                                                          1 (2%)                                                          
      Diverticulum                                                                            1 (2%)                                
      Hyperplasia, Lymphoid                                         1 (2%)                                                          
      Inflammation                                     1 (2%)                                                                       
      Peyer's Patch, Hyperplasia                       2 (4%)                                                                       
   Intestine Small, Ileum                             (50)         (50)         (50)         (50)         (50)                      
      Peyer's Patch, Hyperplasia                       1 (2%)                                                                       
   Liver                                              (50)         (50)         (50)         (50)         (50)                      
      Angiectasis                                      1 (2%)       1 (2%)                                                          
      Basophilic Focus                                 2 (4%)       1 (2%)       1 (2%)                    1 (2%)                   
      Clear Cell Focus                                 2 (4%)       3 (6%)       3 (6%)       1 (2%)                                
      Cyst                                             1 (2%)                                                                       
      Eosinophilic Focus                               3 (6%)       1 (2%)       3 (6%)       2 (4%)       1 (2%)                   
      Fatty Change                                     3 (6%)       3 (6%)       4 (8%)       4 (8%)       2 (4%)                   
      Hematopoietic Cell Proliferation                 1 (2%)                    1 (2%)       1 (2%)                                
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page    8                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
ALIMENTARY SYSTEM - CONT                                                                                                            
      Inflammation                                    26 (52%)     33 (66%)     34 (68%)     28 (56%)     27 (54%)                  
      Mitotic Alteration                                                                                   1 (2%)                   
      Mixed Cell Focus                                 3 (6%)       5 (10%)      3 (6%)       3 (6%)       6 (12%)                  
      Necrosis                                         3 (6%)       6 (12%)      4 (8%)       4 (8%)       3 (6%)                   
      Pigmentation                                     1 (2%)                    1 (2%)       1 (2%)       1 (2%)                   
      Vacuolization Cytoplasmic                                                                            1 (2%)                   
      Bile Duct, Cyst                                                                                      1 (2%)                   
      Centrilobular, Degeneration                                                             1 (2%)                                
      Portal, Infiltration Cellular, Lymphocyte        1 (2%)       3 (6%)       6 (12%)      8 (16%)      3 (6%)                   
   Mesentery                                          (2)                                    (1)                                    
      Fat, Inflammation                                1 (50%)                                                                      
      Fat, Necrosis                                    1 (50%)                                                                      
   Pancreas                                           (50)         (50)         (50)         (50)         (50)                      
      Atrophy                                                       1 (2%)                                                          
      Cyst                                             2 (4%)                                                                       
      Inflammation                                     8 (16%)     10 (20%)      8 (16%)     14 (28%)     10 (20%)                  
   Salivary Glands                                    (50)         (50)         (50)         (49)         (50)                      
      Atrophy                                                       3 (6%)                    1 (2%)                                
      Inflammation                                    30 (60%)     31 (62%)     33 (66%)     26 (53%)     29 (58%)                  
      Mineralization                                                                          2 (4%)                                
   Stomach, Forestomach                               (48)         (50)         (50)         (48)         (50)                      
      Hyperkeratosis                                   2 (4%)                    2 (4%)       3 (6%)                                
      Hyperplasia                                      1 (2%)       1 (2%)                    1 (2%)                                
   Stomach, Glandular                                 (50)         (50)         (50)         (50)         (50)                      
      Mineralization                                                                                       1 (2%)                   
      Ulcer                                                                                   1 (2%)                                
   Tooth                                                           (1)                       (1)          (2)                       
      Malformation                                                  1 (100%)                  1 (100%)     2 (100%)                 
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 CARDIOVASCULAR SYSTEM                                                                                                              
                                                                                                                                    
   Blood Vessel                                       (50)         (49)         (50)         (50)         (50)                      
      Aorta, Inflammation                              1 (2%)                                 1 (2%)                                
      Aorta, Thrombosis                                1 (2%)                                                                       
   Heart                                              (50)         (50)         (50)         (50)         (50)                      
      Cardiomyopathy                                   1 (2%)       2 (4%)       1 (2%)       2 (4%)       1 (2%)                   
      Inflammation                                     1 (2%)                    1 (2%)       1 (2%)                                
      Mineralization                                                                          5 (10%)                               
      Artery, Inflammation                             1 (2%)                                 1 (2%)       2 (4%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                                                                                                    
                                                             Page    9                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 ENDOCRINE SYSTEM                                                                                                                   
                                                                                                                                    
   Adrenal Cortex                                     (49)         (50)         (50)         (49)         (50)                      
      Fibrosis                                                                                1 (2%)                                
      Hyperplasia                                                                             1 (2%)                                
      Hypertrophy                                     23 (47%)     23 (46%)     22 (44%)     24 (49%)     19 (38%)                  
      Subcapsular, Hyperplasia                        39 (80%)     46 (92%)     43 (86%)     44 (90%)     42 (84%)                  
   Adrenal Medulla                                    (49)         (50)         (50)         (49)         (50)                      
      Hyperplasia                                                                1 (2%)                                             
   Islets, Pancreatic                                 (50)         (50)         (50)         (50)         (50)                      
      Atrophy                                          1 (2%)                                                                       
      Hyperplasia                                      4 (8%)       4 (8%)       5 (10%)      3 (6%)       4 (8%)                   
   Pituitary Gland                                    (48)         (50)         (49)         (50)         (49)                      
      Angiectasis                                      1 (2%)                                                                       
      Cyst                                             2 (4%)       1 (2%)       3 (6%)                                             
      Pars Distalis, Hyperplasia                       5 (10%)      5 (10%)      6 (12%)      4 (8%)       5 (10%)                  
   Thyroid Gland                                      (50)         (49)         (50)         (50)         (50)                      
      Inflammation                                                               1 (2%)       1 (2%)                                
      Follicle, Cyst                                   6 (12%)      4 (8%)       4 (8%)       5 (10%)      5 (10%)                  
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENERAL BODY SYSTEM                                                                                                                
                                                                                                                                    
   None                                                                                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 GENITAL SYSTEM                                                                                                                     
                                                                                                                                    
   Coagulating Gland                                               (1)                       (1)                                    
      Inflammation                                                  1 (100%)                  1 (100%)                              
   Epididymis                                         (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                                  1 (2%)       1 (2%)       1 (2%)       1 (2%)                   
      Mineralization                                                3 (6%)                    2 (4%)       2 (4%)                   
   Preputial Gland                                    (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                    26 (52%)     29 (58%)     31 (62%)     27 (54%)     22 (44%)                  
      Duct, Ectasia                                   15 (30%)     20 (40%)     27 (54%)     17 (34%)     13 (26%)                  
      Duct, Hyperplasia, Squamous                                                             1 (2%)                                
   Testes                                             (50)         (50)         (50)         (50)         (50)                      
      Mineralization                                   1 (2%)                    3 (6%)       3 (6%)       1 (2%)                   
      Germinal Epithelium, Degeneration                1 (2%)                                                                       
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 HEMATOPOIETIC SYSTEM                                                                                                               
                                                                                                                                    
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page   10                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
HEMATOPOIETIC SYSTEM - CONT                                                                                                         
   Bone Marrow                                        (50)         (50)         (50)         (50)         (50)                      
      Hyperplasia                                     17 (34%)     14 (28%)     19 (38%)     20 (40%)     13 (26%)                  
      Necrosis                                                                                1 (2%)                                
   Lymph Node                                         (3)          (2)          (2)          (3)          (2)                       
      Mediastinal, Hyperplasia                         1 (33%)                                                                      
   Lymph Node, Mandibular                             (49)         (49)         (49)         (46)         (48)                      
      Atrophy                                                                    1 (2%)       1 (2%)       1 (2%)                   
      Infiltration Cellular, Plasma Cell                            1 (2%)                                                          
      Infiltration Cellular, Histiocyte                                          1 (2%)                                             
      Pigmentation, Hemosiderin                                                                            1 (2%)                   
   Lymph Node, Mesenteric                             (48)         (49)         (46)         (46)         (50)                      
      Angiectasis                                                                             1 (2%)                                
      Atrophy                                          3 (6%)       1 (2%)                    2 (4%)                                
      Ectasia                                          1 (2%)                                                                       
      Hematopoietic Cell Proliferation                              2 (4%)                    1 (2%)       1 (2%)                   
      Hemorrhage                                                                                           1 (2%)                   
      Hyperplasia                                      2 (4%)                                              1 (2%)                   
      Infiltration Cellular, Mast Cell                 1 (2%)                                                                       
      Infiltration Cellular, Plasma Cell                                         1 (2%)       1 (2%)       1 (2%)                   
      Inflammation                                                                            1 (2%)       1 (2%)                   
      Mineralization                                   1 (2%)                                                                       
   Spleen                                             (50)         (50)         (50)         (49)         (50)                      
      Hematopoietic Cell Proliferation                 7 (14%)      8 (16%)     10 (20%)      8 (16%)      5 (10%)                  
      Hemorrhage                                                                                           1 (2%)                   
      Hyperplasia                                                                             1 (2%)       1 (2%)                   
      Lymphoid Follicle, Atrophy                                    1 (2%)       1 (2%)       1 (2%)       1 (2%)                   
   Thymus                                             (44)         (43)         (44)         (44)         (49)                      
      Atrophy                                                       2 (5%)       3 (7%)       3 (7%)       1 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 INTEGUMENTARY SYSTEM                                                                                                               
                                                                                                                                    
   Skin                                               (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                                                            1 (2%)                                
      Subcutaneous Tissue, Edema                                                 1 (2%)       2 (4%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 MUSCULOSKELETAL SYSTEM                                                                                                             
                                                                                                                                    
   Bone                                               (50)         (50)         (50)         (50)         (50)                      
      Myelofibrosis                                    1 (2%)       1 (2%)       1 (2%)                    1 (2%)                   
   Skeletal Muscle                                                              (1)                                                 
      Inflammation                                                               1 (100%)                                           
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page   11                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
                                                                                                                                    
 NERVOUS SYSTEM                                                                                                                     
                                                                                                                                    
   Brain                                              (50)         (50)         (50)         (50)         (50)                      
      Hemorrhage                                                                              1 (2%)                                
      Infiltration Cellular, Lymphocyte                                                                    1 (2%)                   
      Cerebellum, Necrosis                                                                                 1 (2%)                   
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 RESPIRATORY SYSTEM                                                                                                                 
                                                                                                                                    
   Lung                                               (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                     1 (2%)                    1 (2%)       3 (6%)       1 (2%)                   
      Inflammation, Granulomatous                                                             1 (2%)                                
      Metaplasia, Osseous                                                                     1 (2%)                                
      Pigmentation, Hemosiderin                                                               1 (2%)                                
      Alveolar Epithelium, Hyperplasia                 4 (8%)       2 (4%)       7 (14%)                   5 (10%)                  
      Perivascular, Infiltration Cellular,                                                                                          
          Mononuclear Cell                                                                    1 (2%)                                
   Nose                                               (48)         (48)         (48)         (48)         (50)                      
      Foreign Body                                     1 (2%)       1 (2%)       3 (6%)                    3 (6%)                   
      Inflammation                                     3 (6%)       2 (4%)       6 (13%)                   4 (8%)                   
      Nasolacrimal Duct, Foreign Body                                            2 (4%)       1 (2%)                                
      Nasolacrimal Duct, Inflammation                               2 (4%)       2 (4%)       1 (2%)       3 (6%)                   
      Olfactory Epithelium, Degeneration, Hyaline                   2 (4%)       1 (2%)                                             
      Olfactory Epithelium, Pigmentation                                                      3 (6%)      26 (52%)                  
      Olfactory Epithelium, Respiratory Epithelium,                                                                                 
           Degeneration                                                          1 (2%)                                             
   Trachea                                            (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                                                            1 (2%)                                
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 SPECIAL SENSES SYSTEM                                                                                                              
                                                                                                                                    
   Harderian Gland                                    (4)          (4)          (4)          (1)          (3)                       
      Inflammation                                     1 (25%)                                                                      
____________________________________________________________________________________________________________________________________
                                                                                                                                    
 URINARY SYSTEM                                                                                                                     
                                                                                                                                    
   Kidney                                             (50)         (50)         (50)         (50)         (50)                      
      Atrophy                                                                    1 (2%)                                             
      Cyst                                             2 (4%)       3 (6%)                    3 (6%)       3 (6%)                   
      Cytoplasmic Alteration                                                                               1 (2%)                   
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                             Page   12                                                              
                                                                                                                                   
NTP Experiment-Test: 56111-04         INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a)               Report: PEIRPT03  
Study Type: CHRONIC                                        TRANS-CINNAMALDEHYDE                                   Date: 09/26/01    
Route: DOSED FEED                                                                                                 Time: 14:40:37    
____________________________________________________________________________________________________________________________________
                                                                                                                                    
         B6C3F1 MICE MALE                          UNTREATD     VEHICLE      .312%        .625%        1.25%                        
                                                   CONTROL      CONTROL                                                             
____________________________________________________________________________________________________________________________________
                                                                                                                                    
URINARY SYSTEM - CONT                                                                                                               
      Fibrosis                                                                                1 (2%)                                
      Infarct                                          2 (4%)       5 (10%)      2 (4%)       2 (4%)                                
      Infiltration Cellular, Lymphocyte               39 (78%)     39 (78%)     42 (84%)     40 (80%)     44 (88%)                  
      Inflammation                                     2 (4%)                                 2 (4%)       1 (2%)                   
      Metaplasia, Osseous                              2 (4%)                    1 (2%)       3 (6%)       2 (4%)                   
      Mineralization                                  42 (84%)     44 (88%)     49 (98%)     45 (90%)     46 (92%)                  
      Nephropathy                                     46 (92%)     47 (94%)     46 (92%)     38 (76%)     42 (84%)                  
      Artery, Inflammation                                          1 (2%)                    1 (2%)                                
      Glomerulus, Dilatation                                                     1 (2%)                                             
      Renal Tubule, Dilatation                         6 (12%)      7 (14%)      5 (10%)      8 (16%)      9 (18%)                  
      Renal Tubule, Hyperplasia                        1 (2%)       1 (2%)                                                          
      Renal Tubule, Pigmentation                                                 1 (2%)                                             
   Urinary Bladder                                    (50)         (50)         (50)         (50)         (50)                      
      Inflammation                                    20 (40%)     16 (32%)     20 (40%)     18 (36%)     21 (42%)                  
                                                                                                                                    
                                                                                                                                    
a  Number of animals examined microscopically at site and number of animals with lesion                                             
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
                                                             Page   13                                                              
                                                                                                                                   
                             ------------------------------------------------------------                                           
                             ----------              END OF REPORT             ----------                                           
                             ------------------------------------------------------------