title: Trimethoprim resistance determined by R factors.
abstract: R factors conferring a high level of resistance to trimethoprim have been identified in one strain of Escherichia coli and one of Klebsiella aerogenes, both isolated from infected urines.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D004754:Enterobacter / Q000187:drug effects*; D004926:Escherichia coli / Q000187:drug effects*; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D005827:Genetics, Microbial; D006801:Humans; D011743:Pyrimidines / Q000494:pharmacology*; D013449:Sulfonamides / Q000494:pharmacology; D014295:Trimethoprim / Q000494:pharmacology; D014552:Urinary Tract Infections / Q000382:microbiology
chemical_list: D000900:Anti-Bacterial Agents; D005493:Folic Acid Antagonists; D011743:Pyrimidines; D013449:Sulfonamides; D014295:Trimethoprim