TDMS Study 97006-02 Pathology Tables
NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 FINAL#1 MICE Facility: Battelle Northwest Chemical CAS #: 108-10-1 Lock Date: 01/24/03 Cage Range: All Reasons For Removal: All Removal Date Range: All Treatment Groups: Include All Page 1 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 3| 2| 3| 9| 1| 3| 3| 7| 3| 3| 3| 3| 3| 8| 9| 3| 3| 3| 3| 3| 3| 1| 3| 3| 3| | 3| 4| 2| 1| 5| 2| 2| 8| 2| 3| 3| 3| 2| 6| 7| 3| 2| 3| 1| 3| 3| 5| 1| 2| 3| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + + + + A + + A M + M + + + + + + + + + + + + M +| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + A + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Intestine Large, Cecum | + + + + A + + + + + + + + + + + + + + + + M + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Intestine Small, Duodenum | + + + + + + + A + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Basophilic Focus | X X X | Clear Cell Focus | X | Eosinophilic Focus | X X X X | Infiltration Cellular, Mast Cell | 2 | Mixed Cell Focus | X | Necrosis | 3 | Tension Lipidosis | 1 | Thrombosis | | Bile Duct, Hyperplasia | 2 | |__________________________________________________________________________| Mesentery | + + + + | Fat, Hemorrhage | 2 | Fat, Necrosis | 2 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | 2 3 | Inflammation, Chronic Active | | __________________________________________|__________________________________________________________________________| Page 2 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 3| 2| 3| 9| 1| 3| 3| 7| 3| 3| 3| 3| 3| 8| 9| 3| 3| 3| 3| 3| 3| 1| 3| 3| 3| | 3| 4| 2| 1| 5| 2| 2| 8| 2| 3| 3| 3| 2| 6| 7| 3| 2| 3| 1| 3| 3| 5| 1| 2| 3| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Duct, Cyst | 3 | |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | 1 | Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Tooth | | Malformation | | _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 2 1 2 | Artery, Inflammation, Chronic Active | | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 2 2 | Hypertrophy | 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Parathyroid Gland | + M + + M + + M M + + M + + M + M + + M M M + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Pars Distalis, Angiectasis | | Pars Distalis, Hyperplasia | 3 2 3 4| Pars Intermedia, Hyperplasia | 2 | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 3 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 3| 2| 3| 9| 1| 3| 3| 7| 3| 3| 3| 3| 3| 8| 9| 3| 3| 3| 3| 3| 3| 1| 3| 3| 3| | 3| 4| 2| 1| 5| 2| 2| 8| 2| 3| 3| 3| 2| 6| 7| 3| 2| 3| 1| 3| 3| 5| 1| 2| 3| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ENDOCRINE SYSTEM - cont | | Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 1 2 2 4 | _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | _____________________________________________________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Clitoral Gland | + + + + + + + + + + + + M + + + + + + + + + + + +| |__________________________________________________________________________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + +| Cyst | 2 3 3 3 2 2 2 3 3 | Thrombosis | 3 | Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| Amyloid Deposition | 2 | Angiectasis | | Endometrium, Hyperplasia, Cystic | 4 3 4 4 3 3 3 2 3 3 3 4 3 4 3 4 3 4 3 4 3 4 2 2 4| _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| Infiltration Cellular, Mast Cell | 2 | |__________________________________________________________________________| Lymph Node | + + + + + | Iliac, Infiltration Cellular, Plasma | | Cell | | Renal, Ectasia | | |__________________________________________________________________________| Lymph Node, Bronchial | + + + + + + M + + + + + + M + M + M + + + + + + +| |__________________________________________________________________________| Lymph Node, Mandibular | + M M + M + + M + + + + + + + + + M + M + + I M +| |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mediastinal | + + + + + + + + + + + M + + + + + + + M + + + + +| Infiltration Cellular, Mast Cell | 2 | __________________________________________|__________________________________________________________________________| Page 4 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 3| 2| 3| 9| 1| 3| 3| 7| 3| 3| 3| 3| 3| 8| 9| 3| 3| 3| 3| 3| 3| 1| 3| 3| 3| | 3| 4| 2| 1| 5| 2| 2| 8| 2| 3| 3| 3| 2| 6| 7| 3| 2| 3| 1| 3| 3| 5| 1| 2| 3| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| HEMATOPOIETIC SYSTEM - cont | | |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 3 2 2| Infiltration Cellular, Mast Cell | 2 | |__________________________________________________________________________| Thymus | + + + + + + + + + + + + + + + + + + + + M + + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | |__________________________________________________________________________| Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Hemorrhage | 4 | Inflammation, Chronic Active | 2 1 | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| Infiltration Cellular, Mast Cell | 2 | |__________________________________________________________________________| Skeletal Muscle | + | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Alveolar Epithelium, Hyperplasia | | Alveolus, Infiltration Cellular, | | Histiocyte | | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Infiltration Cellular, Mast Cell | 4 | __________________________________________|__________________________________________________________________________| Page 5 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 5| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 3| 2| 3| 9| 1| 3| 3| 7| 3| 3| 3| 3| 3| 8| 9| 3| 3| 3| 3| 3| 3| 1| 3| 3| 3| | 3| 4| 2| 1| 5| 2| 2| 8| 2| 3| 3| 3| 2| 6| 7| 3| 2| 3| 1| 3| 3| 5| 1| 2| 3| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| RESPIRATORY SYSTEM - cont | | Inflammation, Suppurative | 1 1 | Artery, Inflammation, Chronic Active | | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 | Olfactory Epithelium, Degeneration, | | Hyaline | 1 | Respiratory Epithelium, Degeneration,| | Hyaline | 2 1 2 2 2 1 1 2 2 2 2 2 | Respiratory Epithelium, Metaplasia | 1| |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| Cornea, Inflammation, Chronic Active | 1 | Cornea, Mineralization | 1 | Retina, Atrophy | 3 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Amyloid Deposition | 4 | Metaplasia, Osseous | 1 | Nephropathy | 1 1 1 3 1 1 1 1| Papilla, Necrosis | | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | __________________________________________|__________________________________________________________________________ Page 6 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + + + + + + + + + + + A + + + + + A A + + + +| 42 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + A + + + + + + A + + + +| 48 | Artery, Inflammation, Chronic Active | 2 | 1 2.0| |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + A + + + + + + A + + + +| 47 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + + + + + + A + + + + + + A + + + +| 46 | Artery, Inflammation, Chronic Active | 2 | 1 2.0| |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + + + + + + + A + + + + + + A + + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + + + + + + + A + + + + + + A + + + +| 48 | |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + A + + + + + + A + + + +| 48 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Basophilic Focus | | 3 | Clear Cell Focus | X X | 3 | Eosinophilic Focus | | 4 | Infiltration Cellular, Mast Cell | | 1 2.0| Mixed Cell Focus | | 1 | Necrosis | 1 4 | 3 2.7| Tension Lipidosis | | 1 1.0| Thrombosis | 2 | 1 2.0| Bile Duct, Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Mesentery | + + + + + + +| 11 | Fat, Hemorrhage | | 1 2.0| Fat, Necrosis | 2 2 2 2 2 2| 9 2.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 7 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 3 | 3 2.7| Inflammation, Chronic Active | 2 | 1 2.0| Duct, Cyst | | 1 3.0| |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | | 1 1.0| Artery, Inflammation, Chronic Active | 2 3 | 2 2.5| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + A + + + + + + + + + + +| 49 | Artery, Inflammation, Chronic Active | 3 3 | 2 3.0| |__________________________________________________________________________|____________| Tooth | + | 1 | Malformation | 4 | 1 4.0| _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | | 3 1.7| Artery, Inflammation, Chronic Active | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 | 4 2.0| Hypertrophy | 3 2 | 3 2.3| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 4 | 2 3.0| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 8 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | |__________________________________________________________________________|____________| Parathyroid Gland | + + + + + + + I + + M M + M M M M M M + + M M M +| 28 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Pars Distalis, Angiectasis | 1 | 1 1.0| Pars Distalis, Hyperplasia | 2 2 2 2 2 2 | 10 2.4| Pars Intermedia, Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Follicular Cell, Hyperplasia | 3 1 2 | 7 2.1| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Clitoral Gland | + + + I + + + + + + + + + + + + + + + + M + M M +| 45 | |__________________________________________________________________________|____________| Ovary | + + + + + + + + + + + + I + + + + + + + + + + + +| 49 | Cyst | 2 2 2 2 3 | 14 2.4| Thrombosis | | 1 3.0| Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Amyloid Deposition | | 1 2.0| Angiectasis | 4 | 1 4.0| Endometrium, Hyperplasia, Cystic | 4 4 3 3 2 2 3 2 4 4 3 3 4 3 4 2 3 4 3 4 4 4 2 2| 49 3.2| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Infiltration Cellular, Mast Cell | | 1 2.0| |__________________________________________________________________________|____________| Lymph Node | + + | 7 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 9 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | Iliac, Infiltration Cellular, Plasma | | | Cell | 3 | 1 3.0| Renal, Ectasia | 3 | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Bronchial | + + + + + + + + + + + + + + + + + + + + + + M + M| 44 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | + + + + + + + + + + + M + + + + + M + + + + + + +| 40 | |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + M + + + + + + + + + M + + + + + + + + + + + + +| 46 | Infiltration Cellular, Mast Cell | | 1 2.0| |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | 3 2 | 5 2.4| Infiltration Cellular, Mast Cell | | 1 2.0| |__________________________________________________________________________|____________| Thymus | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hemorrhage | | 1 4.0| Inflammation, Chronic Active | | 2 1.5| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Infiltration Cellular, Mast Cell | | 1 2.0| |__________________________________________________________________________|____________| Skeletal Muscle | | 1 | _____________________________________________________________________________________________________________________| | * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 10 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Alveolar Epithelium, Hyperplasia | 2 | 1 2.0| Alveolus, Infiltration Cellular, | | | Histiocyte | 1 | 1 1.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Infiltration Cellular, Mast Cell | | 1 4.0| Inflammation, Suppurative | 1 2 | 4 1.3| Artery, Inflammation, Chronic Active | 2 | 1 2.0| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 | 23 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 2 1 2 2 2 1 1 | 8 1.5| Respiratory Epithelium, Degeneration,| | | Hyaline | 3 1 2 1 2 1 3 1 2 1 2 2 | 24 1.8| Respiratory Epithelium, Metaplasia | 1 1 | 3 1.0| |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + A + + + + + + + + + + +| 49 | Cornea, Inflammation, Chronic Active | | 1 1.0| Cornea, Mineralization | | 1 1.0| Retina, Atrophy | | 1 3.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + A + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 11 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 3| 7| 7| 7| 7| 7| 7| 7| 1| 6| 7| 7| 7| 6| 7| 6| 7| 6| 7| 7| 5| | DAY ON TEST | 3| 3| 3| 3| 6| 3| 3| 3| 3| 3| 3| 3| 7| 3| 3| 3| 3| 5| 3| 8| 0| 8| 3| 3| 3| | | 1| 3| 3| 2| 8| 3| 2| 3| 2| 3| 1| 3| 7| 2| 2| 3| 3| 3| 2| 4| 6| 1| 2| 2| 7| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| SPECIAL SENSES SYSTEM - cont | | | Hyperplasia | | 1 2.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Amyloid Deposition | | 1 4.0| Metaplasia, Osseous | 1 | 2 1.0| Nephropathy | 1 1 1 2 1 1 1 1 1 1 1 1 1 1| 22 1.1| Papilla, Necrosis | 2 | 1 2.0| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 12 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| DAY ON TEST | 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 1| 8| 3| 3| 3| 3| 3| 3| 3| 3| 1| 1| 8| 3| | 0| 3| 2| 2| 1| 2| 1| 3| 2| 3| 3| 0| 7| 3| 3| 2| 2| 1| 3| 2| 2| 5| 5| 3| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + + + + + + + + + + + + + + + + M + + + + + + + M| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + + + + + + + +| Ulcer | 4 | |__________________________________________________________________________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Basophilic Focus | X | Clear Cell Focus | X X X | Cyst | 4 | Eosinophilic Focus | X X X X X X | Infarct | X | Inflammation, Chronic | | Mixed Cell Focus | X | Necrosis | 2 | Tension Lipidosis | 2 | |__________________________________________________________________________| Mesentery | + + + + | Artery, Inflammation, Chronic Active | | Fat, Necrosis | 2 2 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________| Page 13 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| DAY ON TEST | 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 1| 8| 3| 3| 3| 3| 3| 3| 3| 3| 1| 1| 8| 3| | 0| 3| 2| 2| 1| 2| 1| 3| 2| 3| 3| 0| 7| 3| 3| 2| 2| 1| 3| 2| 2| 5| 5| 3| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | 1 | Inflammation | 1 | |__________________________________________________________________________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 1 1 | Artery, Inflammation, Chronic Active | | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | Necrosis | 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | | |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Parathyroid Gland | M + + M + M + + M + + + M + M M + + M + M M + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + I + + + + + + + + + + + + + + + +| Pars Distalis, Angiectasis | 2 3 | Pars Distalis, Hyperplasia | 2 3 2 4| |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Cyst | 3 | Follicular Cell, Hyperplasia | 2 1 1| _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | |__________________________________________________________________________| Peritoneum | | __________________________________________|__________________________________________________________________________| Page 14 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| DAY ON TEST | 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 1| 8| 3| 3| 3| 3| 3| 3| 3| 3| 1| 1| 8| 3| | 0| 3| 2| 2| 1| 2| 1| 3| 2| 3| 3| 0| 7| 3| 3| 2| 2| 1| 3| 2| 2| 5| 5| 3| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Clitoral Gland | + + M + M + + + + + + + + M + + + + + + + + + + +| |__________________________________________________________________________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | 2 | Cyst | 2 2 2 3 3 2 2 3 | |__________________________________________________________________________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | | Hyperplasia, Cystic | 3 | Inflammation, Suppurative | | Necrosis | 3 | Endometrium, Hyperplasia, Cystic | 4 4 2 4 3 3 3 4 3 4 4 4 2 4 3 4 4 2 3 3 4 4 4 2| _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node | | Iliac, Ectasia | | Lumbar, Angiectasis | | Renal, Angiectasis | | Renal, Artery, Inflammation, Chronic | | Active | | |__________________________________________________________________________| Lymph Node, Bronchial | + + + + + + + M + + M + M + + + + + M + + + + M +| |__________________________________________________________________________| Lymph Node, Mandibular | + + + + + + + + + + + M + M M M + + + + + + + M +| Hyperplasia, Lymphoid | 3 2| |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Lymphoid | 3 | |__________________________________________________________________________| Lymph Node, Mediastinal | + + + + + M M + + M + + + + + + + + + M + + + M +| Hyperplasia, Lymphoid | 3 | |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | | __________________________________________|__________________________________________________________________________| Page 15 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| DAY ON TEST | 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 1| 8| 3| 3| 3| 3| 3| 3| 3| 3| 1| 1| 8| 3| | 0| 3| 2| 2| 1| 2| 1| 3| 2| 3| 3| 0| 7| 3| 3| 2| 2| 1| 3| 2| 2| 5| 5| 3| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| HEMATOPOIETIC SYSTEM - cont | | |__________________________________________________________________________| Thymus | + + + + + + + + + + + + + + + + + + + + + + + M +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | |__________________________________________________________________________| Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 3 | |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Foreign Body | | Inflammation, Chronic Active | 2 1 | Inflammation, Suppurative | | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| Fracture | X | |__________________________________________________________________________| Skeletal Muscle | + | Inflammation, Suppurative | 3 | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Meninges, Infiltration Cellular, | | Mononuclear Cell | 2 | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Alveolar Epithelium, Hyperplasia | 1 1 4 | Artery, Mineralization | | Bronchiole, Hyperplasia | 1 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 2 | __________________________________________|__________________________________________________________________________| Page 16 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| DAY ON TEST | 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 1| 8| 3| 3| 3| 3| 3| 3| 3| 3| 1| 1| 8| 3| | 0| 3| 2| 2| 1| 2| 1| 3| 2| 3| 3| 0| 7| 3| 3| 2| 2| 1| 3| 2| 2| 5| 5| 3| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| RESPIRATORY SYSTEM - cont | | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1| Olfactory Epithelium, Atrophy | 1 | Olfactory Epithelium, Degeneration, | | Hyaline | 1 1 1 | Respiratory Epithelium, Degeneration,| | Hyaline | 2 2 2 1 2 2 2 | Respiratory Epithelium, Metaplasia | | |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| Cornea, Inflammation, Chronic Active | 2 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 1 | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Metaplasia, Osseous | 1 | Nephropathy | 1 1 2 1 1 2 1 1 1 1 1 1 3 1 1| |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________ Page 17 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + M + + I A + + + + + + + + + + + + + + + + A| 44 | |__________________________________________________________________________|____________| Intestine Large, Colon | A + + + + + + + + + + + + + + + + + + + + + + + A| 48 | |__________________________________________________________________________|____________| Intestine Large, Rectum | A + + + + + + + + + + + + + + + + + + + + + + + A| 48 | |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + A + + + + + + + + + + + + + + + A| 48 | Artery, Inflammation, Chronic Active | 4 | 1 4.0| |__________________________________________________________________________|____________| Intestine Small, Duodenum | A + + + + + + + + + + + + + + + + + + + + + + + A| 48 | Ulcer | | 1 4.0| |__________________________________________________________________________|____________| Intestine Small, Jejunum | A + + + + + + A + + + + + + + + + + + + + + + + A| 47 | |__________________________________________________________________________|____________| Intestine Small, Ileum | A + + + + + + + A + + + + + + + + + + + + + + + A| 47 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Basophilic Focus | X | 2 | Clear Cell Focus | X | 4 | Cyst | | 1 4.0| Eosinophilic Focus | X X X X X | 11 | Infarct | | 1 | Inflammation, Chronic | 1 | 1 1.0| Mixed Cell Focus | | 1 | Necrosis | | 1 2.0| Tension Lipidosis | 1 | 2 1.5| |__________________________________________________________________________|____________| Mesentery | + + + + + + + | 11 | Artery, Inflammation, Chronic Active | 4 | 1 4.0| Fat, Necrosis | 2 2 2 2 2 | 9 2.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 18 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | 1 | 2 1.0| Inflammation | | 1 1.0| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 2 2 | 6 1.3| Artery, Inflammation, Chronic Active | 3 2 | 2 2.5| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 2 | 3 2.0| Necrosis | | 1 2.0| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 3 3 | 2 3.0| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Parathyroid Gland | M M M + + M + + + + + + + M + + + + + M + + + + M| 33 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Pars Distalis, Angiectasis | 2 | 3 2.3| Pars Distalis, Hyperplasia | 3 2 2 3 | 8 2.6| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 19 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cyst | | 1 3.0| Follicular Cell, Hyperplasia | 1 2 | 5 1.4| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | |__________________________________________________________________________|____________| Peritoneum | + + | 2 | _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Clitoral Gland | + + + + M + I + + + M + + + + + + M + + + + + + M| 42 | |__________________________________________________________________________|____________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | | 1 2.0| Cyst | 2 2 2 2 2 | 13 2.2| |__________________________________________________________________________|____________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | 3 3 | 2 3.0| Hyperplasia, Cystic | | 1 3.0| Inflammation, Suppurative | 2 | 1 2.0| Necrosis | | 1 3.0| Endometrium, Hyperplasia, Cystic | 4 4 3 4 3 3 2 2 4 1 4 4 4 3 3 3 3 2 4 3 4 3 4 4 | 48 3.3| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lymph Node | + + + | 3 | Iliac, Ectasia | 2 | 1 2.0| Lumbar, Angiectasis | 3 | 1 3.0| Renal, Angiectasis | 3 | 1 3.0| Renal, Artery, Inflammation, Chronic | | | Active | 3 | 1 3.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 20 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | |__________________________________________________________________________|____________| Lymph Node, Bronchial | + + + + + + + + + + M M + M M + + + + + + + + + +| 41 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | + + M + + + + + + + + M + + + + + + + + + + M + +| 42 | Hyperplasia, Lymphoid | | 2 2.5| |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + M + +| 49 | Hyperplasia, Lymphoid | | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Mediastinal | M + + + + + + + + + + + + M + M + + + M + + + + M| 40 | Hyperplasia, Lymphoid | | 1 3.0| |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | 2 | 1 2.0| |__________________________________________________________________________|____________| Thymus | M + + + + + + + + + + + + + + + + + + M + + + + +| 47 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | + + + + + + + + + + + + + + + + + + I + + + + + +| 49 | Hyperplasia | | 1 3.0| |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Foreign Body | 3| 1 3.0| Inflammation, Chronic Active | | 2 1.5| Inflammation, Suppurative | 4| 1 4.0| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Fracture | | 1 | |__________________________________________________________________________|____________| Skeletal Muscle | + | 2 | Inflammation, Suppurative | | 1 3.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 21 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Meninges, Infiltration Cellular, | | | Mononuclear Cell | | 1 2.0| _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Alveolar Epithelium, Hyperplasia | 4 1 | 5 2.2| Artery, Mineralization | 3 | 1 3.0| Bronchiole, Hyperplasia | 1 1 1 | 4 1.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 1 2| 3 1.7| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 30 1.0| Olfactory Epithelium, Atrophy | | 1 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 1 1 | 5 1.0| Respiratory Epithelium, Degeneration,| | | Hyaline | 2 2 1 3 2 1 2 1 2 2 2 3 | 19 1.9| Respiratory Epithelium, Metaplasia | 1 1 1 | 3 1.0| |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + A + + + + + + + + + + + + + + + A| 48 | Cornea, Inflammation, Chronic Active | | 1 2.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + A + + + + + + + + + + + + + + + +| 49 | Hyperplasia | | 1 1.0| _____________________________________________________________________________________________________________________| | * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 22 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 5| 7| 7| 7| 7| 7| 7| 6| 5| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 0| | DAY ON TEST | 9| 0| 3| 3| 3| 3| 3| 3| 1| 3| 6| 3| 3| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 2| | | 8| 2| 2| 1| 1| 2| 1| 8| 5| 2| 2| 2| 3| 8| 2| 2| 3| 1| 2| 2| 2| 2| 3| 3| 1| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Metaplasia, Osseous | 1 | 2 1.0| Nephropathy | 1 1 2 2 2 1 1 2 1 1 1 1 1 | 28 1.3| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 23 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| DAY ON TEST | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 9| 0| 3| 3| 3| 3| | 2| 3| 1| 2| 2| 2| 1| 3| 1| 1| 2| 0| 3| 1| 2| 3| 2| 3| 2| 5| 1| 3| 3| 1| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + + I M + + + + + + + + + I + + + I + + + I + + M| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | | Basophilic Focus | | Clear Cell Focus | X X X X | Eosinophilic Focus | X X X X | Fatty Change | | Hematopoietic Cell Proliferation | 2 | Mixed Cell Focus | | Necrosis | | Tension Lipidosis | | |__________________________________________________________________________| Mesentery | + + + + + + + +| Fat, Necrosis | 2 2 2 2 2 3| |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | 4 | Basophilic Focus | | Inflammation, Chronic Active | 2 | Necrosis, Fatty | 3| Duct, Cyst | 4 | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 24 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| DAY ON TEST | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 9| 0| 3| 3| 3| 3| | 2| 3| 1| 2| 2| 2| 1| 3| 1| 1| 2| 0| 3| 1| 2| 3| 2| 3| 2| 5| 1| 3| 3| 1| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | | |__________________________________________________________________________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| Metaplasia, Hepatocyte | | _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 1 1 | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 3 | Hyperplasia | | Hypertrophy | 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + I + + + + + + + + + + + + + + + + +| Hyperplasia | | |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | |__________________________________________________________________________| Parathyroid Gland | + M + M + + M + + M + M M M + + + + + + M + + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Pars Distalis, Angiectasis | | Pars Distalis, Hyperplasia | 4 3 2 3 3 2 2 1 2 | |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + M + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 2 1 1 1 | _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | |__________________________________________________________________________| Peritoneum | +| __________________________________________|__________________________________________________________________________| Page 25 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| DAY ON TEST | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 9| 0| 3| 3| 3| 3| | 2| 3| 1| 2| 2| 2| 1| 3| 1| 1| 2| 0| 3| 1| 2| 3| 2| 3| 2| 5| 1| 3| 3| 1| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENERAL BODY SYSTEM - cont | | Inflammation, Suppurative | 3| _____________________________________________________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Clitoral Gland | + + + + + + M + + M + M + + M + + + M + I + + + +| |__________________________________________________________________________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + I| Cyst | 2 4 2 3 3 2 3 2 | |__________________________________________________________________________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | | Inflammation, Suppurative | | Thrombosis | 2 | Endometrium, Hyperplasia, Cystic | 4 4 4 4 4 1 3 4 2 4 4 1 3 2 4 2 4 4 2 2 4 4 4 3| _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node | + + | Lumbar, Ectasia | | Renal, Angiectasis | | |__________________________________________________________________________| Lymph Node, Bronchial | + + + + + + + + + M + + + M + + + + + + + + M + M| |__________________________________________________________________________| Lymph Node, Mandibular | + + M + + M + + + I M + M + + + + + M + + + + + +| |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mediastinal | + + + + + + + + + + + + + + M + M + + + + M + + +| |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 3 2 3 | |__________________________________________________________________________| Thymus | + + + + + + + + + + + + + + + + + + M + + M + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 26 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| DAY ON TEST | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 9| 0| 3| 3| 3| 3| | 2| 3| 1| 2| 2| 2| 1| 3| 1| 1| 2| 0| 3| 1| 2| 3| 2| 3| 2| 5| 1| 3| 3| 1| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM - cont | | Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 4 | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperostosis | 2 | |__________________________________________________________________________| Skeletal Muscle | + | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Meninges, Infiltration Cellular, | | Mononuclear Cell | | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| Artery, Inflammation, Chronic Active | | Respiratory Epithelium, Degeneration,| | Hyaline | 3 | |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Infiltration Cellular, Mononuclear | | Cell | | Alveolar Epithelium, Hyperplasia | 1 2 | Alveolus, Infiltration Cellular, | | Histiocyte | | Bronchiole, Hyperplasia | 3 1 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 1 | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 | Olfactory Epithelium, Atrophy | | Olfactory Epithelium, Degeneration, | | __________________________________________|__________________________________________________________________________| Page 27 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| DAY ON TEST | 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 9| 0| 3| 3| 3| 3| | 2| 3| 1| 2| 2| 2| 1| 3| 1| 1| 2| 0| 3| 1| 2| 3| 2| 3| 2| 5| 1| 3| 3| 1| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| RESPIRATORY SYSTEM - cont | | Hyaline | 2 | Respiratory Epithelium, Degeneration,| | Hyaline | 2 1 2 2 2 2 2 | Respiratory Epithelium, Metaplasia | 1 1 1 1 1 | Respiratory Epithelium, Metaplasia, | | Squamous | 1 | Turbinate, Necrosis | 2 1 | |__________________________________________________________________________| Pleura | | |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| Degeneration, Hyaline | 3 | _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| Cataract | | Cornea, Inflammation, Chronic Active | | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 3 | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Cyst | | Metaplasia, Osseous | 1 | Nephropathy | 1 1 1 1 1 2 1 1 1 1 3 1 1 1 3| Artery, Inflammation, Chronic Active | 3 | Pelvis, Dilatation | | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________ Page 28 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | I M A + I + I + I + + + + + A + A + + + + A + I +| 34 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + A + + + + + + A + + +| 48 | |__________________________________________________________________________|____________| Intestine Large, Cecum | + + A + + + + + + + + + + + A + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + A + + + + + + + + + + + A + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + A + + + + + + + + + + + A + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Ileum | + + A + + + + + + + + + + + A + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | 2 | 1 2.0| Basophilic Focus | X | 1 | Clear Cell Focus | X | 5 | Eosinophilic Focus | X X X X X X| 10 | Fatty Change | 2 | 1 2.0| Hematopoietic Cell Proliferation | 2 | 2 2.0| Mixed Cell Focus | X | 1 | Necrosis | 2 2 2 3 4 | 5 2.6| Tension Lipidosis | 2 2 1| 3 1.7| |__________________________________________________________________________|____________| Mesentery | + + + + +| 13 | Fat, Necrosis | 2 2 2 2 2| 11 2.1| |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Atrophy | | 1 4.0| Basophilic Focus | 2 | 1 2.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 29 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | Inflammation, Chronic Active | | 1 2.0| Necrosis, Fatty | | 1 3.0| Duct, Cyst | | 1 4.0| |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | 1 | 1 1.0| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + A + + + + + + A + + +| 48 | Metaplasia, Hepatocyte | 4 | 1 4.0| _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 1 | 5 1.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | | 1 3.0| Hyperplasia | 2 | 1 2.0| Hypertrophy | 3 3| 3 2.7| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia | 2 | 1 2.0| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Hyperplasia | 2 | 2 2.0| |__________________________________________________________________________|____________| Parathyroid Gland | M + M + M M M + + + M M M M + + + M + M + A + + +| 30 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + A + + + + + + A + + +| 48 | Pars Distalis, Angiectasis | 2 3 2 | 3 2.3| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 30 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | Pars Distalis, Hyperplasia | 2 3 2 3 | 13 2.5| |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Follicular Cell, Hyperplasia | 2 1 1 2 2 2 2 | 11 1.5| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | |__________________________________________________________________________|____________| Peritoneum | | 1 | Inflammation, Suppurative | | 1 3.0| _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Clitoral Gland | + + M + + + M + + + + + + + + + + + + + + + + + M| 41 | |__________________________________________________________________________|____________| Ovary | + + + + + + + + + + + + + + + + + + + + + A + + +| 48 | Cyst | 2 3 2 4 2 | 13 2.6| |__________________________________________________________________________|____________| Uterus | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Angiectasis | 4 | 1 4.0| Inflammation, Suppurative | 3 | 1 3.0| Thrombosis | | 1 2.0| Endometrium, Hyperplasia, Cystic | 3 4 1 2 2 4 3 3 3 2 4 2 4 4 2 3 4 3 4 3 4 3| 46 3.1| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | |__________________________________________________________________________|____________| Lymph Node | + + + + + + + | 9 | Lumbar, Ectasia | 3 | 1 3.0| Renal, Angiectasis | 3 | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Bronchial | M + + + + M + + + + + M + M + + A + M + + M + + +| 39 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | + + + + M + M + + M + + + + M + + + + M + + + + +| 39 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 31 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + M M M + + M M + + + + + M + + M M + + + A + + +| 38 | |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Hematopoietic Cell Proliferation | 2 3 4 3 | 7 2.9| |__________________________________________________________________________|____________| Thymus | + + + + M + + + + + + + + + + + + + + + + A + + +| 46 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | 1 1 2 2| 5 2.0| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperostosis | | 1 2.0| |__________________________________________________________________________|____________| Skeletal Muscle | + + | 3 | _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Meninges, Infiltration Cellular, | | | Mononuclear Cell | 2 1 | 2 1.5| _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + A + + + + + + + +| 49 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 32 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM - cont | | | Respiratory Epithelium, Degeneration,| | | Hyaline | | 1 3.0| |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Infiltration Cellular, Mononuclear | | | Cell | 4 | 1 4.0| Alveolar Epithelium, Hyperplasia | 2 | 3 1.7| Alveolus, Infiltration Cellular, | | | Histiocyte | 1 3 | 2 2.0| Bronchiole, Hyperplasia | | 2 2.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 3 | 2 2.0| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1| 23 1.0| Olfactory Epithelium, Atrophy | 1 | 1 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 1 2 1 | 4 1.5| Respiratory Epithelium, Degeneration,| | | Hyaline | 2 2 2 1 2 1 1 2 2 2 2 2 2| 20 1.8| Respiratory Epithelium, Metaplasia | 1 | 6 1.0| Respiratory Epithelium, Metaplasia, | | | Squamous | | 1 1.0| Turbinate, Necrosis | | 2 1.5| |__________________________________________________________________________|____________| Pleura | + | 1 | |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Degeneration, Hyaline | | 1 3.0| _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Cataract | 3 | 1 3.0| Cornea, Inflammation, Chronic Active | 2 3 2 | 3 2.3| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 33 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 0| 6| 7| 7| 6| 6| 5| 7| 7| 7| 7| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 4| 3| 3| 3| 3| 3| 3| 5| 7| 4| 3| 3| 8| 9| 6| 3| 3| 3| 3| 7| 3| 3| 3| | | 2| 2| 8| 3| 2| 2| 2| 3| 3| 1| 5| 8| 2| 3| 4| 6| 7| 2| 3| 3| 2| 3| 3| 1| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| 5| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| SPECIAL SENSES SYSTEM - cont | | | |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Hyperplasia | 3 | 2 3.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Cyst | 3 | 1 3.0| Metaplasia, Osseous | 1 1 | 3 1.0| Nephropathy | 1 1 1 1 1 1 1 1 1 1 1| 26 1.2| Artery, Inflammation, Chronic Active | | 1 3.0| Pelvis, Dilatation | 2 | 1 2.0| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 34 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 3| DAY ON TEST | 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 2| 3| 0| 1| 3| 1| 3| 3| 3| 3| 3| 3| 3| 3| 2| | 3| 3| 5| 3| 2| 5| 1| 4| 2| 1| 2| 1| 5| 4| 3| 9| 1| 3| 3| 2| 2| 3| 1| 3| 9| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + M + + + + + + + + M + + + + M + M + + + + + + +| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + + + A + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + + + A + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Cecum | + + + + + + + + + + + + + A + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Duodenum | + + + + + + + + + + + + + A + + + + + + + + + + A| Peyer's Patch, Hyperplasia | | |__________________________________________________________________________| Intestine Small, Jejunum | + + + + + + + + + + + + + A + + + + + + + + + + A| |__________________________________________________________________________| Intestine Small, Ileum | + + + + + + + + + + + + + A + + + + + + + + + + A| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Basophilic Focus | X X | Clear Cell Focus | X | Eosinophilic Focus | X X X X X X | Inflammation, Chronic | 1 2 | Mixed Cell Focus | X | Necrosis | 1 | |__________________________________________________________________________| Mesentery | + + | Fat, Necrosis | 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | | |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | | Inflammation | 2 | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 35 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 3| DAY ON TEST | 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 2| 3| 0| 1| 3| 1| 3| 3| 3| 3| 3| 3| 3| 3| 2| | 3| 3| 5| 3| 2| 5| 1| 4| 2| 1| 2| 1| 5| 4| 3| 9| 1| 3| 3| 2| 2| 3| 1| 3| 9| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + A| Necrosis | | |__________________________________________________________________________| Tooth | | _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 | Inflammation, Suppurative | 3 | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 1 | Hypertrophy | 1 | Infiltration Cellular, Mononuclear | | Cell | 3 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | |__________________________________________________________________________| Parathyroid Gland | + + + + + + + + + + M + M M + M + + + + + M + M M| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + I + + + + + + + + + + + + + +| Pars Distalis, Angiectasis | 1 2 | Pars Distalis, Hyperplasia | 3 2 3 3 3 | |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + + + + M + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 2 1 1 1 | _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | _____________________________________________________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 36 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 3| DAY ON TEST | 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 2| 3| 0| 1| 3| 1| 3| 3| 3| 3| 3| 3| 3| 3| 2| | 3| 3| 5| 3| 2| 5| 1| 4| 2| 1| 2| 1| 5| 4| 3| 9| 1| 3| 3| 2| 2| 3| 1| 3| 9| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM - cont | | Clitoral Gland | + + + + + + + M + + + + + M + M M + M + + + + + +| |__________________________________________________________________________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + +| Cyst | 2 2 2 3 | Inflammation, Suppurative | | Artery, Inflammation, Chronic Active | | |__________________________________________________________________________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | | Infiltration Cellular, Mixed Cell | 2 | Inflammation, Suppurative | | Metaplasia, Squamous | 2 | Endometrium, Hyperplasia, Cystic | 3 3 4 3 3 2 4 3 4 4 4 4 4 2 3 2 3 4 4 3 3 4 3 4 2| _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node | + + | Lumbar, Infiltration Cellular, | | Plasma Cell | 4 | Renal, Infiltration Cellular, Plasma | | Cell | 3 | |__________________________________________________________________________| Lymph Node, Bronchial | + + + M M + M + + + + M + + + + + + M M M + + + M| |__________________________________________________________________________| Lymph Node, Mandibular | + + + + + M + M + + + + M M + + + + + + + + + + +| Infiltration Cellular, Plasma Cell | 3 | |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + + + + + + + + + + M + + + + + + + + + + +| Angiectasis | | |__________________________________________________________________________| Lymph Node, Mediastinal | + + + M M + + + + + + + + M + + M + + + + + + + +| |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 2 4 | |__________________________________________________________________________| Thymus | + + + + + M + + + + I + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________| Page 37 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 3| DAY ON TEST | 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 2| 3| 0| 1| 3| 1| 3| 3| 3| 3| 3| 3| 3| 3| 2| | 3| 3| 5| 3| 2| 5| 1| 4| 2| 1| 2| 1| 5| 4| 3| 9| 1| 3| 3| 2| 2| 3| 1| 3| 9| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM | | |__________________________________________________________________________| Mammary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Skeletal Muscle | | Artery, Inflammation, Chronic Active | | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Meninges, Infiltration Cellular, | | Mononuclear Cell | 2 | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Alveolar Epithelium, Hyperplasia | 1 1 | |__________________________________________________________________________| Nose | + + + + + + + + + I + + + + + + + + + + + + + + +| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 | Olfactory Epithelium, Degeneration, | | Hyaline | 1 | Respiratory Epithelium, Degeneration,| | Hyaline | 2 1 1 | Respiratory Epithelium, Metaplasia | | |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 38 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 3| DAY ON TEST | 3| 3| 1| 3| 3| 3| 3| 2| 3| 3| 2| 3| 0| 1| 3| 1| 3| 3| 3| 3| 3| 3| 3| 3| 2| | 3| 3| 5| 3| 2| 5| 1| 4| 2| 1| 2| 1| 5| 4| 3| 9| 1| 3| 3| 2| 2| 3| 1| 3| 9| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| SPECIAL SENSES SYSTEM - cont | | Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| Degeneration | 4 | Cornea, Inflammation, Chronic Active | 3 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Metaplasia, Osseous | 1 | Nephropathy | 1 3 1 1 1 3 2 2 1 | Papilla, Necrosis | | Renal Tubule, Hyperplasia | 2 | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________ Page 39 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 4| 3| 3| 3| 1| 3| 3| 3| 3| 3| 3| 8| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| | | 3| 2| 1| 3| 3| 3| 3| 7| 3| 3| 3| 2| 1| 1| 7| 2| 1| 2| 1| 5| 2| 2| 3| 2| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + M + M + + + + + M M + M + + + + + + + + + + I| 40 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | Peyer's Patch, Hyperplasia | 2 | 1 2.0| |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + A + + + + +| 47 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Basophilic Focus | X | 3 | Clear Cell Focus | X | 2 | Eosinophilic Focus | X X X X X X X X| 14 | Inflammation, Chronic | | 2 1.5| Mixed Cell Focus | | 1 | Necrosis | | 1 1.0| |__________________________________________________________________________|____________| Mesentery | + + + + + + | 8 | Fat, Necrosis | 2 2 2 2 2 | 7 2.0| |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 2 | 1 2.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 40 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 4| 3| 3| 3| 1| 3| 3| 3| 3| 3| 3| 8| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| | | 3| 2| 1| 3| 3| 3| 3| 7| 3| 3| 3| 2| 1| 1| 7| 2| 1| 2| 1| 5| 2| 2| 3| 2| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | 2 2 | 2 2.0| Inflammation | 1 | 2 1.5| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Necrosis | 1 | 1 1.0| |__________________________________________________________________________|____________| Tooth | + | 1 | _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 1 | 3 1.0| Inflammation, Suppurative | | 1 3.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 2 1.5| Hypertrophy | 1 1 | 3 1.0| Infiltration Cellular, Mononuclear | | | Cell | | 1 3.0| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + I + + + + + + + +| 49 | |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Parathyroid Gland | + + + M M M M + + M + + + + + + + + + M + + + + I| 36 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Pars Distalis, Angiectasis | | 2 1.5| Pars Distalis, Hyperplasia | 1 3 3 3 2 3 | 11 2.6| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 41 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 4| 3| 3| 3| 1| 3| 3| 3| 3| 3| 3| 8| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| | | 3| 2| 1| 3| 3| 3| 3| 7| 3| 3| 3| 2| 1| 1| 7| 2| 1| 2| 1| 5| 2| 2| 3| 2| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | Thyroid Gland | + + + + + M + + + + + + + + + + + + + + + + + + +| 48 | Follicular Cell, Hyperplasia | 2 1 2 3| 8 1.6| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Clitoral Gland | + + + + + + + + + + M M M + + + + + + + + + + + +| 42 | |__________________________________________________________________________|____________| Ovary | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cyst | 2 3 2 2 2 | 9 2.2| Inflammation, Suppurative | 1 | 1 1.0| Artery, Inflammation, Chronic Active | 3 | 1 3.0| |__________________________________________________________________________|____________| Uterus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | 3 3 | 2 3.0| Infiltration Cellular, Mixed Cell | | 1 2.0| Inflammation, Suppurative | 4 | 1 4.0| Metaplasia, Squamous | | 1 2.0| Endometrium, Hyperplasia, Cystic | 4 3 4 3 4 1 4 4 4 4 3 4 4 4 3 3 4 4 2 4 3 3 4 4| 49 3.4| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lymph Node | + + + | 5 | Lumbar, Infiltration Cellular, | | | Plasma Cell | | 1 4.0| Renal, Infiltration Cellular, Plasma | | | Cell | | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Bronchial | M + + + + M + + + + + M + + + + M + M + + + + + +| 37 | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 42 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 4| 3| 3| 3| 1| 3| 3| 3| 3| 3| 3| 8| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| | | 3| 2| 1| 3| 3| 3| 3| 7| 3| 3| 3| 2| 1| 1| 7| 2| 1| 2| 1| 5| 2| 2| 3| 2| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | Lymph Node, Mandibular | M M + M + + M + + M + + M + + + + + + + + M + + M| 38 | Infiltration Cellular, Plasma Cell | | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + M + + + M + + +| 47 | Angiectasis | 2 | 1 2.0| |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + + + + M + M + + + + M M + + + + + + + + + M + +| 41 | |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | 3 4 2 | 5 3.0| |__________________________________________________________________________|____________| Thymus | + + + M + + + + + + + + + + + + + + + + + + + + M| 46 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | M + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | 4 1 | 2 2.5| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Skeletal Muscle | + + | 2 | Artery, Inflammation, Chronic Active | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Meninges, Infiltration Cellular, | | | Mononuclear Cell | 2 | 2 2.0| _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 43 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 4| 3| 3| 3| 1| 3| 3| 3| 3| 3| 3| 8| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| | | 3| 2| 1| 3| 3| 3| 3| 7| 3| 3| 3| 2| 1| 1| 7| 2| 1| 2| 1| 5| 2| 2| 3| 2| 2| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE FEMALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM - cont | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Alveolar Epithelium, Hyperplasia | 1 1 1 | 5 1.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 | 20 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | | 1 1.0| Respiratory Epithelium, Degeneration,| | | Hyaline | 2 1 1 1 1 1 1 2 2 1| 13 1.3| Respiratory Epithelium, Metaplasia | 1 | 1 1.0| |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Degeneration | | 1 4.0| Cornea, Inflammation, Chronic Active | 3 | 2 3.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 1 | 1 1.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Metaplasia, Osseous | 1 | 2 1.0| Nephropathy | 1 1 1 1 1 1 3 1 1 2 3 1 1 1 1 1 1 1| 27 1.4| Papilla, Necrosis | 2 | 1 2.0| Renal Tubule, Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 44 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 6| 4| 7| 6| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| DAY ON TEST | 2| 7| 8| 3| 1| 2| 1| 3| 3| 3| 2| 3| 3| 3| 2| 3| 3| 2| 2| 2| 1| 2| 3| 3| 3| | 9| 8| 2| 0| 4| 9| 2| 1| 1| 0| 9| 0| 1| 0| 9| 1| 0| 9| 9| 9| 8| 9| 0| 0| 0| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + + A + + + + + I + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Acute | | |__________________________________________________________________________| Intestine Large, Cecum | + + A + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Duodenum | + + A + + + + + + + + + + + + + + + + + + + + + +| Ulcer | 3 | |__________________________________________________________________________| Intestine Small, Jejunum | + + A + + + + + + + + + + + + + + + + + + + + + +| Peyer's Patch, Hyperplasia | 3 | |__________________________________________________________________________| Intestine Small, Ileum | + + A + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | 2 | Basophilic Focus | X X X X X X X| Clear Cell Focus | X X X X X X X X X X X | Eosinophilic Focus | X X X| Inflammation, Granulomatous | 2 | Mixed Cell Focus | X | Necrosis | 2 2 1 1 | Tension Lipidosis | 1 | Bile Duct, Hyperplasia | 1 | Hepatocyte, Vacuolization Cytoplasmic| | |__________________________________________________________________________| Mesentery | + + + + + + | Fat, Necrosis | 2 2 2 2 3 2 | |__________________________________________________________________________| Pancreas | + + A + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________| Page 45 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 6| 4| 7| 6| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| DAY ON TEST | 2| 7| 8| 3| 1| 2| 1| 3| 3| 3| 2| 3| 3| 3| 2| 3| 3| 2| 2| 2| 1| 2| 3| 3| 3| | 9| 8| 2| 0| 4| 9| 2| 1| 1| 0| 9| 0| 1| 0| 9| 1| 0| 9| 9| 9| 8| 9| 0| 0| 0| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Inflammation, Acute | 3 | |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | 3 2 | Inflammation | | Ulcer | | |__________________________________________________________________________| Stomach, Glandular | + + A + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | | Necrosis | 2 | _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 1 1 2 | Thrombosis | 4 | Artery, Inflammation, Chronic Active | | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 3 2 2 2 2 2 1 | Hypertrophy | 2 2 3 2 2 2 1 4 2 2 2 2 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | |__________________________________________________________________________| Islets, Pancreatic | + + A + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 | |__________________________________________________________________________| Parathyroid Gland | + + + + + + M M M + + M M + M + M + + + + M + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Pars Distalis, Hyperplasia | 4 | |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 2 1 | _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | __________________________________________|__________________________________________________________________________| Page 46 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 6| 4| 7| 6| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| DAY ON TEST | 2| 7| 8| 3| 1| 2| 1| 3| 3| 3| 2| 3| 3| 3| 2| 3| 3| 2| 2| 2| 1| 2| 3| 3| 3| | 9| 8| 2| 0| 4| 9| 2| 1| 1| 0| 9| 0| 1| 0| 9| 1| 0| 9| 9| 9| 8| 9| 0| 0| 0| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| Granuloma Sperm | | |__________________________________________________________________________| Penis | | |__________________________________________________________________________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Ectasia | 2 | |__________________________________________________________________________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 3 | |__________________________________________________________________________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| Dilatation | | Inflammation, Chronic Active | 1 | |__________________________________________________________________________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | | Interstitial Cell, Hyperplasia | | _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Bronchial | + + M + M + M + + + + + + + + + M + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mandibular | + + + M + + + + + + + M M + M + + M + + + + M + M| |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + M + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mediastinal | + + + + + + + + + + + + + + + + + + M + + + + + +| |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 2 | |__________________________________________________________________________| Thymus | + M M + M + + + + + + + I + + + M + + + M + + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | __________________________________________|__________________________________________________________________________| Page 47 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 6| 4| 7| 6| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| DAY ON TEST | 2| 7| 8| 3| 1| 2| 1| 3| 3| 3| 2| 3| 3| 3| 2| 3| 3| 2| 2| 2| 1| 2| 3| 3| 3| | 9| 8| 2| 0| 4| 9| 2| 1| 1| 0| 9| 0| 1| 0| 9| 1| 0| 9| 9| 9| 8| 9| 0| 0| 0| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM - cont | | |__________________________________________________________________________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Acute | 4 | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperostosis | 2 | Joint, Cartilage, Hyperplasia | | |__________________________________________________________________________| Skeletal Muscle | + + | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Necrosis | 2 1 | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Congestion, Chronic | | Alveolar Epithelium, Hyperplasia | 3 1 2 | Alveolus, Infiltration Cellular, | | Histiocyte | 3 | Bronchiole, Hyperplasia | 3 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 1 | Inflammation, Suppurative | 1 1 | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1| Olfactory Epithelium, Degeneration, | | Hyaline | | Respiratory Epithelium, Metaplasia | 1 1 1 1 1 1 | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 48 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 6| 4| 7| 6| 7| 6| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| DAY ON TEST | 2| 7| 8| 3| 1| 2| 1| 3| 3| 3| 2| 3| 3| 3| 2| 3| 3| 2| 2| 2| 1| 2| 3| 3| 3| | 9| 8| 2| 0| 4| 9| 2| 1| 1| 0| 9| 0| 1| 0| 9| 1| 0| 9| 9| 9| 8| 9| 0| 0| 0| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CONTROL | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| RESPIRATORY SYSTEM - cont | | Pleura | | |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + A + + + + + + + + + + + + + + + + + + + + + +| Retina, Atrophy | 3 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 3 | Hypertrophy | | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 3 | Metaplasia, Osseous | 1 | Nephropathy | 2 3 1 3 1 1 1 1 1 2 1 1 1 1 1 2 1 2 1 1| Renal Tubule, Hyperplasia | 1 | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 2 | __________________________________________|__________________________________________________________________________ Page 49 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + M M + + + + + + + + + + + + + M M M + + + +| 43 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Acute | 2 | 1 2.0| |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Ulcer | | 1 3.0| |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Peyer's Patch, Hyperplasia | | 1 3.0| |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | | 1 2.0| Basophilic Focus | X | 8 | Clear Cell Focus | X X X X X X X X X X X | 22 | Eosinophilic Focus | | 3 | Inflammation, Granulomatous | | 1 2.0| Mixed Cell Focus | | 1 | Necrosis | 1| 5 1.4| Tension Lipidosis | 2 2 1 | 4 1.5| Bile Duct, Hyperplasia | | 1 1.0| Hepatocyte, Vacuolization Cytoplasmic| 2 | 1 2.0| |__________________________________________________________________________|____________| Mesentery | + + + | 9 | Fat, Necrosis | 2 2 2 | 9 2.1| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 50 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Acute | | 1 3.0| |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | 3 | 3 2.7| Inflammation | 1 | 1 1.0| Ulcer | 2 2 | 2 2.0| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia | 2 | 1 2.0| Necrosis | | 1 2.0| _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 1 1 2 1 1| 10 1.2| Thrombosis | 4 | 2 4.0| Artery, Inflammation, Chronic Active | 2 2 | 2 2.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 2 2 2 2 | 13 2.0| Hypertrophy | 2 1 2 2 2 1 1 2 2 2 2 2 2 | 26 2.0| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 51 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | Parathyroid Gland | + + + + M + + M M + M + + + + + M M M + M + + M M| 32 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Pars Distalis, Hyperplasia | | 1 4.0| |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Follicular Cell, Hyperplasia | 2 1 | 4 1.5| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Granuloma Sperm | 3 3 | 2 3.0| |__________________________________________________________________________|____________| Penis | + | 1 | |__________________________________________________________________________|____________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Ectasia | 2 | 2 2.0| |__________________________________________________________________________|____________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | | 1 3.0| |__________________________________________________________________________|____________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Dilatation | 3 | 1 3.0| Inflammation, Chronic Active | | 1 1.0| |__________________________________________________________________________|____________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 2 3 | 2 2.5| Interstitial Cell, Hyperplasia | 2 | 1 2.0| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 52 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lymph Node, Bronchial | + + + + + M M M + + M + + M + + M + + + + M + + +| 39 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | + + M + M + + + M + + + + + + M I + + M + + + + +| 37 | |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + M M + + + + M + + + + M + + M M + + + + + + M +| 42 | |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | 2| 2 2.0| |__________________________________________________________________________|____________| Thymus | + + + + + + M + M + + + + + + + + + + + + + + + +| 42 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Acute | | 1 4.0| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperostosis | | 1 2.0| Joint, Cartilage, Hyperplasia | 3 | 1 3.0| |__________________________________________________________________________|____________| Skeletal Muscle | + | 3 | _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Necrosis | | 2 1.5| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 53 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Congestion, Chronic | 4 | 1 4.0| Alveolar Epithelium, Hyperplasia | 4 1 3 2 | 7 2.3| Alveolus, Infiltration Cellular, | | | Histiocyte | | 1 3.0| Bronchiole, Hyperplasia | | 1 3.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 1 1.0| Inflammation, Suppurative | 1 1 | 4 1.0| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1| 33 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 1 | 1 1.0| Respiratory Epithelium, Metaplasia | 1 1 1 | 9 1.0| |__________________________________________________________________________|____________| Pleura | + | 1 | |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Retina, Atrophy | | 1 3.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 | 3 2.3| Hypertrophy | 2 | 1 2.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 54 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 6| 7| 7| 7| 7| 7| 7| 5| 6| 7| 7| 7| 7| 7| | DAY ON TEST | 3| 2| 3| 2| 2| 3| 0| 3| 7| 3| 3| 6| 2| 3| 3| 2| 3| 3| 9| 2| 3| 2| 3| 3| 2| | | 1| 9| 0| 9| 9| 1| 4| 1| 6| 0| 0| 6| 9| 1| 0| 9| 0| 0| 8| 2| 0| 9| 0| 0| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| A | CONTROL | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| URINARY SYSTEM - cont | | | Inflammation, Suppurative | | 1 3.0| Metaplasia, Osseous | 1 | 2 1.0| Nephropathy | 1 1 1 1 1 1 3 1 1 1 2 3 1 1 1 3 2 2 1 1 1| 41 1.4| Renal Tubule, Hyperplasia | 1 | 2 1.0| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | | 1 2.0| __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 55 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| DAY ON TEST | 2| 2| 3| 3| 8| 3| 0| 3| 2| 6| 3| 2| 2| 2| 3| 3| 2| 3| 2| 9| 2| 2| 3| 3| 3| | 9| 9| 1| 1| 0| 0| 4| 0| 9| 5| 0| 9| 9| 9| 1| 0| 9| 0| 9| 3| 9| 4| 0| 1| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + + + + A + + + + M + I + + + + + + + + + + + + +| Infiltration Cellular, | | Polymorphonuclear | 2 | |__________________________________________________________________________| Intestine Large, Colon | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Cecum | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Duodenum | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Jejunum | + + + + A + + + + + + + + + + + + + + + + + + + +| Peyer's Patch, Hyperplasia | 3 | |__________________________________________________________________________| Intestine Small, Ileum | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Basophilic Focus | X X | Clear Cell Focus | X X X X X | Eosinophilic Focus | X X | Infarct | | Necrosis | 1 | Tension Lipidosis | 2 2 2 | Bile Duct, Cyst | | |__________________________________________________________________________| Mesentery | + + | Fat, Necrosis | 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Stomach, Forestomach | + + + + A + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | 2 | __________________________________________|__________________________________________________________________________| Page 56 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| DAY ON TEST | 2| 2| 3| 3| 8| 3| 0| 3| 2| 6| 3| 2| 2| 2| 3| 3| 2| 3| 2| 9| 2| 2| 3| 3| 3| | 9| 9| 1| 1| 0| 0| 4| 0| 9| 5| 0| 9| 9| 9| 1| 0| 9| 0| 9| 3| 9| 4| 0| 1| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Inflammation | 2 | Ulcer | | |__________________________________________________________________________| Stomach, Glandular | + + + + A + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 2 2 2 2 2 2 2 2 2 2 1| Hypertrophy | 2 1 2 2 2 2 2 2 2 2 2 2 2 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 3 | |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 2 2 | |__________________________________________________________________________| Parathyroid Gland | + + M + + + M M + + + M + + M + + M M + + M + + +| |__________________________________________________________________________| Pituitary Gland | + + + + A + M + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Thyroid Gland | + + + + A + + + + + + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 2 | _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | _____________________________________________________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| Infiltration Cellular, | | Polymorphonuclear | 2 | Inflammation, Granulomatous | 3 | __________________________________________|__________________________________________________________________________| Page 57 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| DAY ON TEST | 2| 2| 3| 3| 8| 3| 0| 3| 2| 6| 3| 2| 2| 2| 3| 3| 2| 3| 2| 9| 2| 2| 3| 3| 3| | 9| 9| 1| 1| 0| 0| 4| 0| 9| 5| 0| 9| 9| 9| 1| 0| 9| 0| 9| 3| 9| 4| 0| 1| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM - cont | | |__________________________________________________________________________| Penis | + | Inflammation, Acute | 3 | |__________________________________________________________________________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Ectasia | 3 3 | Inflammation, Chronic Active | 3 | |__________________________________________________________________________| Prostate | + + + + + + + + + I + + + + + + + + + + + + + + +| Inflammation, Suppurative | 4 | |__________________________________________________________________________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 4 | |__________________________________________________________________________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | | _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + A + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Bronchial | + M + M A + M M + M + + + M M + + + + + + + + + M| |__________________________________________________________________________| Lymph Node, Mandibular | + + M + + + M + + + + + M + + + + + + + M + M + M| |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + A + + + + + + + + + M + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mediastinal | M + + + A + + + M + + + + + M + + + + + + + + M +| |__________________________________________________________________________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 3 | |__________________________________________________________________________| Thymus | + I + + A + + M M M + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | |__________________________________________________________________________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 58 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| DAY ON TEST | 2| 2| 3| 3| 8| 3| 0| 3| 2| 6| 3| 2| 2| 2| 3| 3| 2| 3| 2| 9| 2| 2| 3| 3| 3| | 9| 9| 1| 1| 0| 0| 4| 0| 9| 5| 0| 9| 9| 9| 1| 0| 9| 0| 9| 3| 9| 4| 0| 1| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM - cont | | Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 4 4 | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Skeletal Muscle | | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Hemorrhage | 2 | Hyperplasia | 2 | Alveolar Epithelium, Hyperplasia | 1 1 3 | Alveolus, Infiltration Cellular, | | Histiocyte | 3 | Bronchiole, Hyperplasia | 2 3 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | | Glands, Hyperplasia | 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 | Olfactory Epithelium, Degeneration, | | Hyaline | | Respiratory Epithelium, Degeneration,| | Hyaline | 1 | Respiratory Epithelium, Metaplasia | 1 1 1 1 1 | |__________________________________________________________________________| Trachea | + + + + A + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 59 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 7| 7| 7| 6| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 4| 7| 7| 7| 7| 7| DAY ON TEST | 2| 2| 3| 3| 8| 3| 0| 3| 2| 6| 3| 2| 2| 2| 3| 3| 2| 3| 2| 9| 2| 2| 3| 3| 3| | 9| 9| 1| 1| 0| 0| 4| 0| 9| 5| 0| 9| 9| 9| 1| 0| 9| 0| 9| 3| 9| 4| 0| 1| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 450 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| SPECIAL SENSES SYSTEM - cont | | Eye | + + + + A + + + + + + + + + + + + + + + + + + + +| Cornea, Inflammation, Acute | 2 | Cornea, Inflammation, Chronic Active | 3 3 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 3 2 3 | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | | Metaplasia, Osseous | | Nephropathy | 2 1 1 1 1 1 1 1 3 2 1 1 1 1 1 2 1 1 1 1 1 2| Renal Tubule, Hyperplasia | 1 | |__________________________________________________________________________| Urinary Bladder | + + + + A + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 4 | __________________________________________|__________________________________________________________________________ Page 60 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 6| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| | DAY ON TEST | 2| 2| 2| 2| 3| 7| 3| 3| 8| 3| 3| 2| 3| 3| 3| 3| 3| 2| 6| 3| 3| 3| 2| 2| 2| | | 9| 9| 9| 9| 1| 0| 1| 0| 2| 1| 0| 9| 0| 0| 1| 1| 0| 9| 1| 0| 0| 0| 9| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + + + + + + + + I + + + + + + + A I + + + + +| 44 | Infiltration Cellular, | | | Polymorphonuclear | | 1 2.0| |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | Peyer's Patch, Hyperplasia | | 1 3.0| |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Basophilic Focus | X X X | 5 | Clear Cell Focus | X X X X X X X X | 13 | Eosinophilic Focus | X X | 4 | Infarct | 4 | 1 4.0| Necrosis | | 1 1.0| Tension Lipidosis | | 3 2.0| Bile Duct, Cyst | X| 1 | |__________________________________________________________________________|____________| Mesentery | + | 3 | Fat, Necrosis | 2 | 3 2.0| |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 61 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 6| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| | DAY ON TEST | 2| 2| 2| 2| 3| 7| 3| 3| 8| 3| 3| 2| 3| 3| 3| 3| 3| 2| 6| 3| 3| 3| 2| 2| 2| | | 9| 9| 9| 9| 1| 0| 1| 0| 2| 1| 0| 9| 0| 0| 1| 1| 0| 9| 1| 0| 0| 0| 9| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia, Squamous | 3 3 | 3 2.7| Inflammation | 2 | 2 2.0| Ulcer | 3 | 1 3.0| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 1 1 1 1 1 1 | 8 1.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 2 2 2 2 2 | 18 1.9| Hypertrophy | 2 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2| 30 1.9| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 1 3.0| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | | 2 2.0| |__________________________________________________________________________|____________| Parathyroid Gland | + + M + + + + + M + + M + + M + + M M + M M + + M| 33 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + I + + + + + + + + + + + + + + + + + + +| 47 | |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Follicular Cell, Hyperplasia | 3 2 1 | 4 2.0| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 62 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 6| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| | DAY ON TEST | 2| 2| 2| 2| 3| 7| 3| 3| 8| 3| 3| 2| 3| 3| 3| 3| 3| 2| 6| 3| 3| 3| 2| 2| 2| | | 9| 9| 9| 9| 1| 0| 1| 0| 2| 1| 0| 9| 0| 0| 1| 1| 0| 9| 1| 0| 0| 0| 9| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Infiltration Cellular, | | | Polymorphonuclear | | 1 2.0| Inflammation, Granulomatous | | 1 3.0| |__________________________________________________________________________|____________| Penis | | 1 | Inflammation, Acute | | 1 3.0| |__________________________________________________________________________|____________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Ectasia | 3 | 3 3.0| Inflammation, Chronic Active | | 1 3.0| |__________________________________________________________________________|____________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Inflammation, Suppurative | | 1 4.0| |__________________________________________________________________________|____________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | | 1 4.0| |__________________________________________________________________________|____________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 2 2 | 2 2.0| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Lymph Node, Bronchial | + + + + M + M + + + + + + + M + + + M M + M + + +| 35 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | + + M M M + + + + + + + + M + M + + + M M M + + +| 36 | |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | |__________________________________________________________________________|____________| Lymph Node, Mediastinal | M + + M M + + M + M + + + + + + + + + + + M + + M| 38 | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 63 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 6| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| | DAY ON TEST | 2| 2| 2| 2| 3| 7| 3| 3| 8| 3| 3| 2| 3| 3| 3| 3| 3| 2| 6| 3| 3| 3| 2| 2| 2| | | 9| 9| 9| 9| 1| 0| 1| 0| 2| 1| 0| 9| 0| 0| 1| 1| 0| 9| 1| 0| 0| 0| 9| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hematopoietic Cell Proliferation | | 1 3.0| |__________________________________________________________________________|____________| Thymus | + M + + + + + + + + + + + + + + + + + + + + + + +| 44 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | | 2 4.0| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Skeletal Muscle | + + | 2 | _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hemorrhage | | 1 2.0| Hyperplasia | | 1 2.0| Alveolar Epithelium, Hyperplasia | 3 3 | 5 2.2| Alveolus, Infiltration Cellular, | | | Histiocyte | | 1 3.0| Bronchiole, Hyperplasia | | 2 2.5| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 64 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 6| 7| 7| 5| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| | DAY ON TEST | 2| 2| 2| 2| 3| 7| 3| 3| 8| 3| 3| 2| 3| 3| 3| 3| 3| 2| 6| 3| 3| 3| 2| 2| 2| | | 9| 9| 9| 9| 1| 0| 1| 0| 2| 1| 0| 9| 0| 0| 1| 1| 0| 9| 1| 0| 0| 0| 9| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| A | 450 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM - cont | | | Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 1 | 1 1.0| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 32 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 1 | 1 1.0| Respiratory Epithelium, Degeneration,| | | Hyaline | | 1 1.0| Respiratory Epithelium, Metaplasia | 1 1 1 1 1 1| 11 1.0| |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + A + + + + + +| 48 | Cornea, Inflammation, Acute | | 1 2.0| Cornea, Inflammation, Chronic Active | | 2 3.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + A + + + + + +| 49 | Hyperplasia | 2 | 4 2.5| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 1 | 1 1.0| Metaplasia, Osseous | 1 1 | 2 1.0| Nephropathy | 3 1 1 3 1 1 2 1 2 1 1 1 1 3 1 1 2 3 1 1 2 1 2| 45 1.4| Renal Tubule, Hyperplasia | 2| 2 1.5| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Inflammation, Suppurative | | 1 4.0| __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 65 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 4| 7| 5| 7| 6| 7| 4| 7| 7| 7| 5| 7| 7| 7| 7| 6| 7| 7| 7| 7| 4| 7| 7| 6| DAY ON TEST | 3| 1| 2| 0| 3| 3| 3| 8| 2| 3| 3| 5| 3| 2| 3| 2| 9| 3| 3| 3| 3| 7| 3| 3| 0| | 0| 2| 9| 1| 0| 9| 1| 0| 9| 0| 1| 4| 1| 9| 0| 9| 8| 0| 0| 0| 0| 1| 0| 0| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | + A + + + + + M I + + A + + + M + M + + + + + + A| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + A + + + + + + + + + + + + +| Hemorrhage | 2 | |__________________________________________________________________________| Intestine Large, Cecum | + A + + + + + + + + + A + + + + + + + + + + + + +| Hemorrhage | 3 | |__________________________________________________________________________| Intestine Small, Duodenum | + A + + + + + + + + + A + + + + + + + + + + I + A| |__________________________________________________________________________| Intestine Small, Jejunum | + + + + + + + + + + + A + + + + + + + + + + + + A| Peyer's Patch, Hyperplasia | 3 2 | |__________________________________________________________________________| Intestine Small, Ileum | + + + + + + + + + + + A + + + + + + + + + + + + A| |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Basophilic Focus | X X | Clear Cell Focus | X X X X X X X X X | Eosinophilic Focus | X X X | Hepatodiaphragmatic Nodule | X | Inflammation, Granulomatous | 2 | Mixed Cell Focus | | Necrosis | | Tension Lipidosis | 1 1 2 | Thrombosis | | Hepatocyte, Vacuolization Cytoplasmic| 2 1 | |__________________________________________________________________________| Mesentery | + + | Fat, Necrosis | 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + A + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________| Page 66 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 4| 7| 5| 7| 6| 7| 4| 7| 7| 7| 5| 7| 7| 7| 7| 6| 7| 7| 7| 7| 4| 7| 7| 6| DAY ON TEST | 3| 1| 2| 0| 3| 3| 3| 8| 2| 3| 3| 5| 3| 2| 3| 2| 9| 3| 3| 3| 3| 7| 3| 3| 0| | 0| 2| 9| 1| 0| 9| 1| 0| 9| 0| 1| 4| 1| 9| 0| 9| 8| 0| 0| 0| 0| 1| 0| 0| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | |__________________________________________________________________________| Stomach, Forestomach | + + + + + + + + + + + A + + + + + + + + + + + + +| Hyperplasia, Squamous | 1 2| Inflammation | 2 1| |__________________________________________________________________________| Stomach, Glandular | + + + + + + + + + + + A + + + + + + + + + + + + +| Necrosis | | |__________________________________________________________________________| Tooth | | Malformation | | _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 2 2 | Thrombosis | 4 | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + A + + + + + + + + + + + + +| Hyperplasia | 2 2 2 2 3 2 2 | Hypertrophy | 2 2 2 2 2 2 2 1 2 2 1 1 2 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + A + + + + + + + + + + + + +| Hyperplasia | 1 2 | |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Parathyroid Gland | M M + M M + + M + + + M + + M + + + M M M + + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + + A + + + I + + + + + + + + +| Pars Distalis, Hyperplasia | 2 2 | |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 1 2 1 1| _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | __________________________________________|__________________________________________________________________________| Page 67 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 4| 7| 5| 7| 6| 7| 4| 7| 7| 7| 5| 7| 7| 7| 7| 6| 7| 7| 7| 7| 4| 7| 7| 6| DAY ON TEST | 3| 1| 2| 0| 3| 3| 3| 8| 2| 3| 3| 5| 3| 2| 3| 2| 9| 3| 3| 3| 3| 7| 3| 3| 0| | 0| 2| 9| 1| 0| 9| 1| 0| 9| 0| 1| 4| 1| 9| 0| 9| 8| 0| 0| 0| 0| 1| 0| 0| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| Granuloma Sperm | 2 | |__________________________________________________________________________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Prostate | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Seminal Vesicle | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | 2 1 1 | Thrombosis | 2 | Interstitial Cell, Hyperplasia | | _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node | + | |__________________________________________________________________________| Lymph Node, Bronchial | + M M + M + + + M + + + + + + + + + + + + + + + +| Hyperplasia, Lymphoid | 3 | |__________________________________________________________________________| Lymph Node, Mandibular | + M + + + + M M M M + A + + + + + M M M + + + M M| Hyperplasia, Lymphoid | 3 | |__________________________________________________________________________| Lymph Node, Mesenteric | + + + + + + + + + + + A + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node, Mediastinal | + M + + + + M + M M M M M + + + + + + + + M + + +| Hyperplasia, Lymphoid | 3 | |__________________________________________________________________________| Spleen | + + + + + + + + + + + A + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | 3 | |__________________________________________________________________________| Thymus | + M + + + + + M + + + A + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | __________________________________________|__________________________________________________________________________| Page 68 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 4| 7| 5| 7| 6| 7| 4| 7| 7| 7| 5| 7| 7| 7| 7| 6| 7| 7| 7| 7| 4| 7| 7| 6| DAY ON TEST | 3| 1| 2| 0| 3| 3| 3| 8| 2| 3| 3| 5| 3| 2| 3| 2| 9| 3| 3| 3| 3| 7| 3| 3| 0| | 0| 2| 9| 1| 0| 9| 1| 0| 9| 0| 1| 4| 1| 9| 0| 9| 8| 0| 0| 0| 0| 1| 0| 0| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM - cont | | |__________________________________________________________________________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 4 | _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | | _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Hydrocephalus | | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | 3 | Pigmentation | | Thrombosis | 4 | Alveolar Epithelium, Hyperplasia | 3 1 1 | Alveolus, Infiltration Cellular, | | Histiocyte | | Bronchiole, Hyperplasia | 1 1 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | | Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 2 1 1 1| Olfactory Epithelium, Atrophy | | Olfactory Epithelium, Degeneration, | | Hyaline | 2 | Olfactory Epithelium, Necrosis | 2 | Respiratory Epithelium, Degeneration,| | Hyaline | 2 | __________________________________________|__________________________________________________________________________| Page 69 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 7| 4| 7| 5| 7| 6| 7| 4| 7| 7| 7| 5| 7| 7| 7| 7| 6| 7| 7| 7| 7| 4| 7| 7| 6| DAY ON TEST | 3| 1| 2| 0| 3| 3| 3| 8| 2| 3| 3| 5| 3| 2| 3| 2| 9| 3| 3| 3| 3| 7| 3| 3| 0| | 0| 2| 9| 1| 0| 9| 1| 0| 9| 0| 1| 4| 1| 9| 0| 9| 8| 0| 0| 0| 0| 1| 0| 0| 2| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 900 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| RESPIRATORY SYSTEM - cont | | Respiratory Epithelium, Hyperplasia | 2 | Respiratory Epithelium, Metaplasia | 1 1 1 2 1 | |__________________________________________________________________________| Trachea | + + + + + + + + + + + A + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + + + + + + + + + + A + + + + + + + + + + + + +| Degeneration | | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | | _____________________________________________________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + A + + + + + + + + + + + + +| Cyst | 3 | Inflammation, Suppurative | | Metaplasia, Osseous | 1 1 | Nephropathy | 3 1 1 1 1 2 2 1 1 1 1 4 1 1 4 1 1 1 1 1 4| Renal Tubule, Hyperplasia | 2 | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + A + + + + + + + + + + + + +| __________________________________________|__________________________________________________________________________ Page 70 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + + + + M A + + + + + M + + + + + + + M + + +| 39 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hemorrhage | | 1 2.0| |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + A + + + + + + + + + + + + + + + + +| 47 | Hemorrhage | | 1 3.0| |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + A + + + + + + + + + + + + + + + + +| 45 | |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + A + + + + + + + + + + + + + + + + +| 47 | Peyer's Patch, Hyperplasia | | 2 2.5| |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Basophilic Focus | X X | 4 | Clear Cell Focus | X X X X | 13 | Eosinophilic Focus | X X | 5 | Hepatodiaphragmatic Nodule | | 1 | Inflammation, Granulomatous | | 1 2.0| Mixed Cell Focus | X | 1 | Necrosis | 3 4 | 2 3.5| Tension Lipidosis | | 3 1.3| Thrombosis | 3 | 1 3.0| Hepatocyte, Vacuolization Cytoplasmic| | 2 1.5| |__________________________________________________________________________|____________| Mesentery | + | 3 | Fat, Necrosis | 2 | 3 2.0| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 71 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | |__________________________________________________________________________|____________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + M| 48 | |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia, Squamous | | 2 1.5| Inflammation | 1 | 3 1.3| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Necrosis | 2 | 1 2.0| |__________________________________________________________________________|____________| Tooth | + | 1 | Malformation | 4 | 1 4.0| _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | | 2 2.0| Thrombosis | 2 3 | 3 3.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia | 2 2 2 2 2 2| 13 2.1| Hypertrophy | 2 2 2 1 2 1 2 2 2 1 2 2 2| 26 1.8| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hyperplasia | 2 | 3 1.7| |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Parathyroid Gland | M + + I + M M + I + M M M + + + + M + + M M + + +| 29 | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 72 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ENDOCRINE SYSTEM - cont | | | Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | Pars Distalis, Hyperplasia | | 2 2.0| |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Follicular Cell, Hyperplasia | 1 3 | 6 1.5| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________| | GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Granuloma Sperm | 1 | 2 1.5| |__________________________________________________________________________|____________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | | 3 1.3| Thrombosis | | 1 2.0| Interstitial Cell, Hyperplasia | 1 | 1 1.0| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lymph Node | | 1 | |__________________________________________________________________________|____________| Lymph Node, Bronchial | M M M M M + + + + + + + M + + + M + + + + + M M +| 37 | Hyperplasia, Lymphoid | | 1 3.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 73 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | Lymph Node, Mandibular | M M + + + + M + + M + + + M + + + + + + + M M + +| 32 | Hyperplasia, Lymphoid | | 1 3.0| |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + M + + + + + + + + + + + + + + + + + + + + + +| 48 | |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + M M + + + + + + + + + + M + + M + + + + + + M M| 36 | Hyperplasia, Lymphoid | | 1 3.0| |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hematopoietic Cell Proliferation | | 1 3.0| |__________________________________________________________________________|____________| Thymus | + + + + + + M + + + + + + + + + + M + M + + + + +| 44 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + M + + + + + + + + + + + +| 49 | Inflammation, Chronic Active | | 1 4.0| _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hydrocephalus | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 74 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM - cont | | | Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | | 1 3.0| Pigmentation | 3 | 1 3.0| Thrombosis | | 1 4.0| Alveolar Epithelium, Hyperplasia | 3 3 | 5 2.2| Alveolus, Infiltration Cellular, | | | Histiocyte | 3 4 3 | 3 3.3| Bronchiole, Hyperplasia | 1 | 3 1.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 2 1 3 | 3 2.0| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 | 24 1.0| Olfactory Epithelium, Atrophy | 1 | 1 1.0| Olfactory Epithelium, Degeneration, | | | Hyaline | 2 | 2 2.0| Olfactory Epithelium, Necrosis | | 1 2.0| Respiratory Epithelium, Degeneration,| | | Hyaline | 1 1 | 3 1.3| Respiratory Epithelium, Hyperplasia | | 1 2.0| Respiratory Epithelium, Metaplasia | 1 1 1 1 1 1 1 1 | 13 1.1| |__________________________________________________________________________|____________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Degeneration | 2 | 1 2.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 75 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 7| 6| 7| 7| 0| 7| 5| 5| 5| 7| 7| | DAY ON TEST | 3| 3| 2| 2| 3| 2| 3| 2| 3| 3| 0| 2| 3| 2| 2| 5| 3| 1| 2| 2| 2| 1| 2| 2| 2| | | 0| 0| 9| 9| 0| 9| 1| 9| 1| 1| 1| 9| 0| 9| 9| 9| 0| 7| 6| 9| 0| 9| 0| 9| 9| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| A | 900 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| URINARY SYSTEM - cont | | | Cyst | | 1 3.0| Inflammation, Suppurative | 2 | 1 2.0| Metaplasia, Osseous | 1 | 3 1.0| Nephropathy | 2 1 1 1 1 3 2 1 1 2 1 1 1 1 1 1 3 1 1 | 40 1.5| Renal Tubule, Hyperplasia | | 1 2.0| |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 76 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 4| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 4| 1| 2| 3| 3| 3| 5| 3| 3| 2| 3| 1| 0| 3| 3| 2| 2| 3| 2| 2| 3| 3| 2| 3| 3| | 1| 0| 9| 1| 1| 0| 1| 0| 0| 9| 0| 7| 7| 0| 0| 9| 9| 7| 9| 9| 1| 0| 9| 0| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM | | |__________________________________________________________________________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Gallbladder | A + + + + + A + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Colon | + + + + + + A + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Large, Cecum | + M + + + + A + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Duodenum | A + + + + + A + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Intestine Small, Jejunum | A + + + + + A + + + + + + + + + + + + + + + + + +| Cyst | | |__________________________________________________________________________| Intestine Small, Ileum | A + + + + + A + + + + + + + + + + + + + + + + + +| Inflammation, Acute | 3 | |__________________________________________________________________________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| Angiectasis | | Basophilic Focus | X X X X X X | Clear Cell Focus | X X X X X X X X X X X X | Eosinophilic Focus | X X X X | Inflammation, Chronic | 1 | Mixed Cell Focus | | Necrosis | 3 2 1 | Tension Lipidosis | 2 | Hepatocyte, Erythrophagocytosis | | Hepatocyte, Vacuolization Cytoplasmic| 3 | |__________________________________________________________________________| Mesentery | + + + | Fat, Necrosis | 2 2 | |__________________________________________________________________________| Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| __________________________________________|__________________________________________________________________________| Page 77 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 4| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 4| 1| 2| 3| 3| 3| 5| 3| 3| 2| 3| 1| 0| 3| 3| 2| 2| 3| 2| 2| 3| 3| 2| 3| 3| | 1| 0| 9| 1| 1| 0| 1| 0| 0| 9| 0| 7| 7| 0| 0| 9| 9| 7| 9| 9| 1| 0| 9| 0| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| ALIMENTARY SYSTEM - cont | | Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia, Squamous | 2 | Ulcer | 1 3 | |__________________________________________________________________________| Stomach, Glandular | I + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| CARDIOVASCULAR SYSTEM | | |__________________________________________________________________________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| Cardiomyopathy | 1 1| Inflammation, Suppurative | 3 | Thrombosis | 3 | _____________________________________________________________________________________________________________________| ENDOCRINE SYSTEM | | |__________________________________________________________________________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 4 2 2 | Hypertrophy | 2 2 1 | |__________________________________________________________________________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | | |__________________________________________________________________________| Parathyroid Gland | + + M M + + + + + + + M + + M M + M M + M + + + +| |__________________________________________________________________________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + M +| |__________________________________________________________________________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Follicular Cell, Hyperplasia | 3 1 1| _____________________________________________________________________________________________________________________| GENERAL BODY SYSTEM | | None | | _____________________________________________________________________________________________________________________| GENITAL SYSTEM | | |__________________________________________________________________________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| Granuloma Sperm | | __________________________________________|__________________________________________________________________________| Page 78 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 4| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 4| 1| 2| 3| 3| 3| 5| 3| 3| 2| 3| 1| 0| 3| 3| 2| 2| 3| 2| 2| 3| 3| 2| 3| 3| | 1| 0| 9| 1| 1| 0| 1| 0| 0| 9| 0| 7| 7| 0| 0| 9| 9| 7| 9| 9| 1| 0| 9| 0| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| GENITAL SYSTEM - cont | | |__________________________________________________________________________| Penis | | Inflammation, Acute | | |__________________________________________________________________________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Ectasia | 3 | Inflammation, Chronic Active | 2| |__________________________________________________________________________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Chronic Active | | |__________________________________________________________________________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| Atrophy | | Interstitial Cell, Hyperplasia | | _____________________________________________________________________________________________________________________| HEMATOPOIETIC SYSTEM | | |__________________________________________________________________________| Bone Marrow | A + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lymph Node | + | |__________________________________________________________________________| Lymph Node, Bronchial | + + + + + + + M + + M + M + + + M + + + + + + M +| |__________________________________________________________________________| Lymph Node, Mandibular | M M + M + M + M M + M + + + M + + M + M + + + + M| |__________________________________________________________________________| Lymph Node, Mesenteric | + M + + + + M + + + + + + + + + + + + + + + + + +| Infiltration Cellular, Histiocyte | 2 | |__________________________________________________________________________| Lymph Node, Mediastinal | + + + + + + + + + + + + + + M + + + M M M + + + M| |__________________________________________________________________________| Spleen | + + + + + + A + + + + + + + + + + + + + + + + + +| Hematopoietic Cell Proliferation | | |__________________________________________________________________________| Thymus | + + + + + + + + + + + M + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| INTEGUMENTARY SYSTEM | | __________________________________________|__________________________________________________________________________| Page 79 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 4| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 4| 1| 2| 3| 3| 3| 5| 3| 3| 2| 3| 1| 0| 3| 3| 2| 2| 3| 2| 2| 3| 3| 2| 3| 3| | 1| 0| 9| 1| 1| 0| 1| 0| 0| 9| 0| 7| 7| 0| 0| 9| 9| 7| 9| 9| 1| 0| 9| 0| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| INTEGUMENTARY SYSTEM - cont | | |__________________________________________________________________________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| |__________________________________________________________________________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| MUSCULOSKELETAL SYSTEM | | |__________________________________________________________________________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| NERVOUS SYSTEM | | |__________________________________________________________________________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| Hemorrhage | | _____________________________________________________________________________________________________________________| RESPIRATORY SYSTEM | | |__________________________________________________________________________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| |__________________________________________________________________________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| Alveolar Epithelium, Hyperplasia | | Bronchiole, Hyperplasia | 1 | |__________________________________________________________________________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 4 1| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 1 1| Respiratory Epithelium, Metaplasia | 1 1 1 1 1 | |__________________________________________________________________________| Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| _____________________________________________________________________________________________________________________| SPECIAL SENSES SYSTEM | | |__________________________________________________________________________| Eye | + + + + + + + + + + + + + + + + + + + + + + + + +| Cataract | 2 | Degeneration | | Cornea, Mineralization | 1 | |__________________________________________________________________________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| Hyperplasia | 1 | __________________________________________|__________________________________________________________________________| Page 80 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 _____________________________________________________________________________________________________________________ | 4| 7| 7| 7| 7| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 7| DAY ON TEST | 4| 1| 2| 3| 3| 3| 5| 3| 3| 2| 3| 1| 0| 3| 3| 2| 2| 3| 2| 2| 3| 3| 2| 3| 3| | 1| 0| 9| 1| 1| 0| 1| 0| 0| 9| 0| 7| 7| 0| 0| 9| 9| 7| 9| 9| 1| 0| 9| 0| 1| __________________________________________|__________________________________________________________________________| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 1800 PPM | 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 2| 2| 2| 2| 2| 2| | 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| __________________________________________|__________________________________________________________________________| URINARY SYSTEM | | |__________________________________________________________________________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| Inflammation, Suppurative | 2 3 | Metaplasia, Osseous | | Nephropathy | 4 1 1 1 1 1 1 1 1 1 2 1 2 1 1 3 1 1 2 1 1 1 1| |__________________________________________________________________________| Ureter | | |__________________________________________________________________________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| Hemorrhage | 3 | __________________________________________|__________________________________________________________________________ Page 81 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 5| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 1| 2| 9| 3| 1| 2| 2| 2| 2| 3| 7| 3| 2| 3| 2| 2| 3| 5| 0| 3| 2| 3| | | 1| 1| 0| 7| 9| 3| 0| 3| 9| 9| 5| 9| 0| 8| 1| 9| 1| 9| 9| 0| 6| 1| 0| 9| 0| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Esophagus | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Gallbladder | + + + + + + + + + + + + + + M + + + + + + M I + +| 45 | |__________________________________________________________________________|____________| Intestine Large, Colon | + + + + + + + + + + + + + + + + + + + + + A + + +| 48 | |__________________________________________________________________________|____________| Intestine Large, Rectum | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | |__________________________________________________________________________|____________| Intestine Large, Cecum | + + + + + + + + + + + + + + + + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Duodenum | + + + + + + + + + + + + + + + + + + + + + A + + +| 47 | |__________________________________________________________________________|____________| Intestine Small, Jejunum | + + + + + + + + + + + + + + + + + + + + + A + + +| 47 | Cyst | 2 | 1 2.0| |__________________________________________________________________________|____________| Intestine Small, Ileum | + + + + + + + + + + + + + + + + + + + + + A + + +| 47 | Inflammation, Acute | | 1 3.0| |__________________________________________________________________________|____________| Liver | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Angiectasis | 2 | 1 2.0| Basophilic Focus | X X| 8 | Clear Cell Focus | X X X X X X X X | 20 | Eosinophilic Focus | X X X X | 8 | Inflammation, Chronic | | 1 1.0| Mixed Cell Focus | X | 1 | Necrosis | 2 3 2 1 | 7 2.0| Tension Lipidosis | | 1 2.0| Hepatocyte, Erythrophagocytosis | 1 | 1 1.0| Hepatocyte, Vacuolization Cytoplasmic| | 1 3.0| |__________________________________________________________________________|____________| Mesentery | + | 4 | Fat, Necrosis | 2 | 3 2.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 82 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 5| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 1| 2| 9| 3| 1| 2| 2| 2| 2| 3| 7| 3| 2| 3| 2| 2| 3| 5| 0| 3| 2| 3| | | 1| 1| 0| 7| 9| 3| 0| 3| 9| 9| 5| 9| 0| 8| 1| 9| 1| 9| 9| 0| 6| 1| 0| 9| 0| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| ALIMENTARY SYSTEM - cont | | | Pancreas | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Salivary Glands | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Stomach, Forestomach | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia, Squamous | | 1 2.0| Ulcer | | 2 2.0| |__________________________________________________________________________|____________| Stomach, Glandular | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | _____________________________________________________________________________________________________________________| | CARDIOVASCULAR SYSTEM | | | |__________________________________________________________________________|____________| Heart | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Cardiomyopathy | 1 1 1 1 1 1 1 2 | 10 1.1| Inflammation, Suppurative | | 1 3.0| Thrombosis | | 1 3.0| _____________________________________________________________________________________________________________________| | ENDOCRINE SYSTEM | | | |__________________________________________________________________________|____________| Adrenal Cortex | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 2 1 2 2 2 | 9 2.1| Hypertrophy | 1 2 2 2 2 2 2 2 2 2 2| 14 1.9| |__________________________________________________________________________|____________| Adrenal Medulla | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Islets, Pancreatic | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 2 | 1 2.0| |__________________________________________________________________________|____________| Parathyroid Gland | + + I + + M + + + + + + + + M + + + + + + + M + M| 37 | |__________________________________________________________________________|____________| Pituitary Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Thyroid Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Follicular Cell, Hyperplasia | 1 1 2 3 2 | 8 1.8| _____________________________________________________________________________________________________________________| | GENERAL BODY SYSTEM | | | None | | | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 83 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 5| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 1| 2| 9| 3| 1| 2| 2| 2| 2| 3| 7| 3| 2| 3| 2| 2| 3| 5| 0| 3| 2| 3| | | 1| 1| 0| 7| 9| 3| 0| 3| 9| 9| 5| 9| 0| 8| 1| 9| 1| 9| 9| 0| 6| 1| 0| 9| 0| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| GENITAL SYSTEM | | | |__________________________________________________________________________|____________| Epididymis | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Granuloma Sperm | 3| 1 3.0| |__________________________________________________________________________|____________| Penis | + | 1 | Inflammation, Acute | 4 | 1 4.0| |__________________________________________________________________________|____________| Preputial Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Ectasia | | 1 3.0| Inflammation, Chronic Active | 3 | 2 2.5| |__________________________________________________________________________|____________| Prostate | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Seminal Vesicle | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Chronic Active | 2 | 1 2.0| |__________________________________________________________________________|____________| Testes | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Atrophy | 2 | 1 2.0| Interstitial Cell, Hyperplasia | 3 1 | 2 2.0| _____________________________________________________________________________________________________________________| | HEMATOPOIETIC SYSTEM | | | |__________________________________________________________________________|____________| Bone Marrow | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | |__________________________________________________________________________|____________| Lymph Node | + | 2 | |__________________________________________________________________________|____________| Lymph Node, Bronchial | M + M + M + + + + M M + + + + + + + M + + + + + +| 39 | |__________________________________________________________________________|____________| Lymph Node, Mandibular | M M + + + + M + M + + + + + + + + + + + M + + + +| 34 | |__________________________________________________________________________|____________| Lymph Node, Mesenteric | + + + + + + + + + + + + + + + + + + + + + + + + +| 48 | Infiltration Cellular, Histiocyte | | 1 2.0| |__________________________________________________________________________|____________| Lymph Node, Mediastinal | + + + M + + + + I + + M M + + + + M + + + M + + M| 38 | _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 84 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 5| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 1| 2| 9| 3| 1| 2| 2| 2| 2| 3| 7| 3| 2| 3| 2| 2| 3| 5| 0| 3| 2| 3| | | 1| 1| 0| 7| 9| 3| 0| 3| 9| 9| 5| 9| 0| 8| 1| 9| 1| 9| 9| 0| 6| 1| 0| 9| 0| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| HEMATOPOIETIC SYSTEM - cont | | | |__________________________________________________________________________|____________| Spleen | + + + + + + + + + + + + + + + + + + + + + + + + +| 49 | Hematopoietic Cell Proliferation | 2 3 3 | 3 2.7| |__________________________________________________________________________|____________| Thymus | M + + + + + + + + + + + + M + + + + + + + + + + +| 47 | _____________________________________________________________________________________________________________________| | INTEGUMENTARY SYSTEM | | | |__________________________________________________________________________|____________| Mammary Gland | M M M M M M M M M M M M M M M M M M M M M M M M M| | |__________________________________________________________________________|____________| Skin | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | MUSCULOSKELETAL SYSTEM | | | |__________________________________________________________________________|____________| Bone | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | NERVOUS SYSTEM | | | |__________________________________________________________________________|____________| Brain | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hemorrhage | 3 | 1 3.0| _____________________________________________________________________________________________________________________| | RESPIRATORY SYSTEM | | | |__________________________________________________________________________|____________| Larynx | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | |__________________________________________________________________________|____________| Lung | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Alveolar Epithelium, Hyperplasia | 2 1| 2 1.5| Bronchiole, Hyperplasia | 1 | 2 1.0| |__________________________________________________________________________|____________| Nose | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | | 2 2.5| Glands, Hyperplasia | 1 1 1 1 1 1 1 1 1 1 1 1 | 26 1.0| Respiratory Epithelium, Metaplasia | 1 | 6 1.0| |__________________________________________________________________________|____________| _____________________________________________________________________________________________________________________|____________| * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 85 NTP Experiment-Test: 97006-02 NONNEOPLASTIC LESIONS BY INDIVIDUAL ANIMAL Report: PEIRPT09 Study Type: CHRONIC METHYL ISOBUTYL KETONE Date: 04/29/04 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 07:49:48 __________________________________________________________________________________________________________________________________ | 7| 7| 7| 6| 7| 5| 7| 5| 7| 7| 7| 7| 7| 6| 7| 7| 7| 7| 7| 7| 6| 6| 7| 7| 7| | DAY ON TEST | 3| 3| 3| 1| 2| 9| 3| 1| 2| 2| 2| 2| 3| 7| 3| 2| 3| 2| 2| 3| 5| 0| 3| 2| 3| | | 1| 1| 0| 7| 9| 3| 0| 3| 9| 9| 5| 9| 0| 8| 1| 9| 1| 9| 9| 0| 6| 1| 0| 9| 0| | __________________________________________|__________________________________________________________________________| T (*) | | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| O | B6C3F1 MICE MALE | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| T | ANIMAL ID | 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| 6| A | 1800 PPM | 2| 2| 2| 2| 3| 3| 3| 3| 3| 3| 3| 3| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 5| L | | 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| | _____________________________________________________________________________________________________________________|____________| RESPIRATORY SYSTEM - cont | | | Trachea | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | _____________________________________________________________________________________________________________________| | SPECIAL SENSES SYSTEM | | | |__________________________________________________________________________|____________| Eye | + + + + + + + + + + + + + + + + + + + + + A + + +| 49 | Cataract | | 1 2.0| Degeneration | 3 | 1 3.0| Cornea, Mineralization | | 1 1.0| |__________________________________________________________________________|____________| Harderian Gland | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hyperplasia | 3 | 2 2.0| _____________________________________________________________________________________________________________________| | URINARY SYSTEM | | | |__________________________________________________________________________|____________| Kidney | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Inflammation, Suppurative | 3 | 3 2.7| Metaplasia, Osseous | 1 | 1 1.0| Nephropathy | 3 3 1 1 2 1 1 1 1 1 1 1 1 1 1 2 1 1 2 1| 43 1.3| |__________________________________________________________________________|____________| Ureter | + | 1 | |__________________________________________________________________________|____________| Urinary Bladder | + + + + + + + + + + + + + + + + + + + + + + + + +| 50 | Hemorrhage | | 1 3.0| __________________________________________________________________________________________________________________________________ * : Total animals with tissue examined microscopically; total animals with lesion and mean severity grade + : Tissue examined microscopically M : Missing tissue 1-4 : Lesion qualified as: X : Lesion present but not qualified A : Autolysis precludes examination 1) Minimal 3) Moderate I : Insufficient tissue BLANK : Not examined 2) Mild 4) Marked Page 86 ------------------------------------------------------------ ---------- END OF REPORT ---------- ------------------------------------------------------------