title: Incidence of mutator strains in Escherichia coli and coliforms in nature.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D009154:Mutation; D010641:Phenotype; D012641:Selection, Genetic; D013752:Tetracycline / Q000494:pharmacology
chemical_list: D013752:Tetracycline