Evolution of resistance to penicillin and cephalosporin antibiotics.
D001419:Bacteria / Q000187:drug effects / Q000235:genetics*; D005075:Biological Evolution; D002511:Cephalosporins / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects / Q000235:genetics; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology*; D001618:beta-Lactamases / Q000235:genetics*
D002511:Cephalosporins; D010406:Penicillins; D001618:beta-Lactamases