Resistance to trimethoprim in Klebsiellae isolated before its introduction.
D004338:Drug Combinations; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects; D007709:Klebsiella / Q000187:drug effects*; D008826:Microbial Sensitivity Tests; D011815:R Factors; D013420:Sulfamethoxazole / Q000494:pharmacology; D014295:Trimethoprim / Q000494:pharmacology*
D004338:Drug Combinations; D014295:Trimethoprim; D013420:Sulfamethoxazole