title: A rifampicin-resistant mutation of E. coli, whose phenotypic expression is dependent on the composition of the medium and the recA allele.
mesh_terms: D000483:Alleles; D003470:Culture Media; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D005111:Extrachromosomal Inheritance; D009154:Mutation; D010641:Phenotype; D012293:Rifampin / Q000494:pharmacology*
chemical_list: D003470:Culture Media; D012293:Rifampin