title: Antimutagens against mutT.
abstract: In E. coli strain 91P containing the mutator gene mutT-, caffeine, spermine and quinacrine, but not guanosine, act as antimutagens, reducing the frequencies of mutation from ara- leads to Ara.
mesh_terms: D001089:Arabinose / Q000378:metabolism; D002110:Caffeine / Q000494:pharmacology*; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D009153:Mutagens; D009154:Mutation / Q000187:drug effects*; D011796:Quinacrine / Q000494:pharmacology*; D013096:Spermine / Q000494:pharmacology*
chemical_list: D009153:Mutagens; D013096:Spermine; D002110:Caffeine; D001089:Arabinose; D011796:Quinacrine