title: Types of spontaneous nalidixic acid resistant mutants of Escherichia coli.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000235:genetics*; D009154:Mutation / Q000187:drug effects; D009268:Nalidixic Acid / Q000494:pharmacology*; D010641:Phenotype
chemical_list: D009268:Nalidixic Acid