title: Selected and spontaneous variants of Serratia marcescens with combined resistance against chloramphenicol, nalidixic acid, and trimethoprim.
mesh_terms: D002701:Chloramphenicol / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D009268:Nalidixic Acid / Q000494:pharmacology*; D012706:Serratia marcescens / Q000187:drug effects*; D014295:Trimethoprim / Q000494:pharmacology*
chemical_list: D009268:Nalidixic Acid; D002701:Chloramphenicol; D014295:Trimethoprim