Penicillin-resistant gonococci.
D002506:Cephalexin / Q000494:pharmacology*; D002511:Cephalosporins / Q000494:pharmacology*; D002515:Cephradine / Q000494:pharmacology*; D006801:Humans; D009344:Neisseria gonorrhoeae / Q000187:drug effects* / Q000201:enzymology; D010403:Penicillin Resistance; D010405:Penicillinase / Q000096:biosynthesis
D002511:Cephalosporins; D010405:Penicillinase; D002515:Cephradine; D002506:Cephalexin