Effects of beta-lactamase from gram-negative organisms on cephalosporins and penicillins.
D002511:Cephalosporins / Q000494:pharmacology*; D055598:Chemical Phenomena; D002621:Chemistry; D004755:Enterobacteriaceae / Q000201:enzymology; D010403:Penicillin Resistance; D010405:Penicillinase; D010406:Penicillins / Q000494:pharmacology*