title: Klebsiella pneumonia strains moderately resistant to ampicillin and carbenicillin: characterization of a new beta-lactamase.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D002228:Carbenicillin / Q000494:pharmacology*; D007700:Kinetics; D007711:Klebsiella pneumoniae / Q000187:drug effects* / Q000201:enzymology; D010403:Penicillin Resistance; D011815:R Factors; D001618:beta-Lactamases / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D000667:Ampicillin; D001618:beta-Lactamases; D002228:Carbenicillin