title: Effect of N-nitroso-N-methylurea on viability and mutagenic response of repair-deficient strains of Escherichia coli.
mesh_terms: D000478:Alkylation; D002110:Caffeine / Q000494:pharmacology; D004260:DNA Repair / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000187:drug effects / Q000235:genetics*; D008770:Methylnitrosourea / Q000494:pharmacology*; D009154:Mutation / Q000187:drug effects*; D013045:Species Specificity
chemical_list: D002110:Caffeine; D008770:Methylnitrosourea