title: A comparison of the mutagenic action of the methyl and ethyl derivatives of nitrosamides and nitrosamidines on Escherichia coli.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D004261:DNA Replication; D004269:DNA, Bacterial; D004926:Escherichia coli / Q000187:drug effects* / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008782:Methylurea Compounds / Q000494:pharmacology*; D009153:Mutagens; D009154:Mutation; D009604:Nitrosoguanidines / Q000494:pharmacology*; D009607:Nitrosourea Compounds / Q000494:pharmacology*; D013997:Time Factors; D014364:Tryptophan / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D008782:Methylurea Compounds; D009153:Mutagens; D009604:Nitrosoguanidines; D009607:Nitrosourea Compounds; D014364:Tryptophan