title: Letter: Co-trimoxazole resistance.
mesh_terms: D004338:Drug Combinations; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects; D009154:Mutation; D013420:Sulfamethoxazole / Q000494:pharmacology*; D013936:Thymidine / Q000494:pharmacology; D013941:Thymine / Q000494:pharmacology; D014295:Trimethoprim / Q000494:pharmacology*
chemical_list: D004338:Drug Combinations; D014295:Trimethoprim; D013420:Sulfamethoxazole; D013941:Thymine; D013936:Thymidine