title: The derivatives of a chloramphenicol-resistant R factor.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001431:Bacteriological Techniques; D002701:Chloramphenicol / Q000494:pharmacology*; D002876:Chromosomes, Bacterial; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification; D005787:Gene Frequency; D005827:Genetics, Microbial; D009154:Mutation; D013696:Temperature
chemical_list: D000900:Anti-Bacterial Agents; D002701:Chloramphenicol