Résumé
With increasing knowledge of the stages of initiation and development in the natural history of neoplastic diseases and the multiple observations that such stages are likely to be ubiquitous in the natural history of all histogenetic types of neoplasm, it is becoming increasingly important to distinguish chemical agents that act selectively during one or the other of these stages. Several compounds, occurring in food, were tested for antimutagenic effect towards cigarette-smoke condensate [CSC] and Benz [a]pyrene[BaP]. Antimutagenicity was determined in the Salmonella/ microsome test, with tester strain TA 98, in the presence of rat-liver homogenate. The similarity in results for cigarette-smoke condensate and for BaP indicates that a general mechanism may be involved in the inhibition of CSC and BaP- induced mutagenicity