Abstract
2,4-Diaminotoluene, a hepatocarcinogenic aromatic amine, was tested for mutagenic potential at both the autosomal tk locus and the sex-linked hgprt locus of both L5178Y 3.7.2C mouse lymphoma cells and Chinese hamster ovary (CHO) AT3-2 cells. This compound was mutagenic in both cell types at the tk locus but not at the hgprt locus. Mutagenic activity was observed in L5178Y cells only in the absence of exogenous metabolic activation, but was observed in CHO-AT3-2 cells both with and without activation.
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