Christine A. Montgomery

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Diagnostic criteria for hepatoproliferative lesions of Fischer 344 rats are presented to permit more complete categorization of the spectrum of lesions observed in two-year chemical carcinogenicity studies. A nomenclature recently adopted by the National Toxicology Program differs from previous classification schemes in that hepatocellular hyperplasia and(More)
The toxicity and carcinogenicity of chlorinated paraffins containing C12 with 60% Cl, and C23 with 43% Cl, were assessed in prechronic and 2-year gavage studies using F344/N rats and B6C3F1 mice of both sexes. Single administrations of chlorinated paraffins were nonlethal in rats and mice, but repeated-dose and 2-year studies demonstrated toxic responses(More)
The National Toxicology Program's pathology database on 2-year carcinogenicity studies was reviewed for nonneoplastic ovarian disease. Ovaries from 39,941 female Fischer rats and 41,444 female B6C3F1 mice were examined. A variety of inflammatory, degenerative, vascular, and proliferative lesions were documented and are described. The most common ovarian(More)
Thirteen-week toxicity studies of the flame retardant 2,2-bis(bromomethyl)-1,3-propanediol (BMP; dibromoneopentyl glycol; FR-1138; CAS No. 329690-0) were conducted in male and female F344/N rats and B6C3F1 mice. The chemical was administered by oral gavage in corn oil 5 days per week for 13 weeks to rats at doses of 0, 50, 100, 200, 400, and 800 mg/kg and(More)
A 13-week subchronic study was conducted by administering hexachlorocyclopentadiene ( HCCP ) in corn oil by gavage to groups of ten male and ten female F344 rats at doses of 150, 75, 38, 19, 10 or 0 mg kg-1, and to groups of ten male and ten female B6C3F1 mice at doses of 300, 150, 75, 38, 19 or 0 mg kg-1. The doses were administered once a day, five days(More)
Choriocarcinoma is one of the rarest ovarian tumors in any animal species. This paper describes the gross and microscopic appearance of seven such neoplasms in B6C3F1 mice. Mean age at death was 47 weeks. Tumors were described at necropsy as dark or hemorrhagic cystic lesions. On microscopic examination tumors were composed of hematocysts, intercellular(More)
As the human and mouse genome projects approach their goals, initiatives in functional genomics are advancing. When the nucleotide sequences are available, identification of gene functions will assume even greater importance. Determination of gene products and their proximal biochemical functions provide a part of the picture, but determination of their(More)