H-ras oncogene mutations during development of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)-induced rat mammary gland cancer.

Abstract excerpt

Laser capture microdissection, polymerase chain reaction-restriction fragment length polymorphism analysis, and DNA sequencing was used to detect H-ras codon 12 and 13 mutations during the stages of mammary gland cancer development in rats exposed to 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), a carcinogen found in cooked meat. Ten oral doses of PhIP (75 mg/kg, p.o., once per day) were administered to...

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