title: Trimethoprim-resistant mutants of E. coli K12: preliminary genetic mapping.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D005796:Genes; D008040:Genetic Linkage; D009154:Mutation; D013762:Tetrahydrofolate Dehydrogenase / Q000096:biosynthesis; D014295:Trimethoprim / Q000494:pharmacology
chemical_list: D014295:Trimethoprim; D013762:Tetrahydrofolate Dehydrogenase