title: The characteristics of eleven mutants of R-factor R57 constitutive for tetracycline resistance, selected and tested in Escherichia coli K12.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D009154:Mutation; D011815:R Factors; D013752:Tetracycline / Q000494:pharmacology*
chemical_list: D013752:Tetracycline