Abstract
The mutagenic and clastogenic effects of the antineoplastic agents homo-aza-steroidal ester (ASE) and chlorambucil (CBC) were tested for their ability to induce mutations in the Salmonella/microsome system and SCE in CHO cells in culture. ASE was found to be positive in strains TA1535 and TA100 and in the newer strain TA102 with and without metabolic activation, while CBC caused histidine reversion in strain TA102 after the addition of mammalian liver microsomal extract (S9). In addition, both agents were found to be strongly positive for SCE induction. The mutagenic and clastogenic actions of both agents were of a dose-response type.
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