The dietary and environmental agent, 6-nitrochrysene (6-NC) is a powerful mammary carcinogen and mutagen in rats. It is known to be metabolized by ring-oxidation, nitro-reduction and a combination of the two pathways. In order to determine the ultimate mutagenic metabolites, we have compared the previously determined mutational profile of 6-NC in rat mammary gland [T. Boyiri, et al. (2004) Carc...