[Semi-synthetic penicillins and cephalosporins].
D001419:Bacteria / Q000187:drug effects*; D002511:Cephalosporins / Q000494:pharmacology*; D002626:Chemistry, Pharmaceutical; D010406:Penicillins / Q000494:pharmacology*
D002511:Cephalosporins; D010406:Penicillins
Penicilline semi-sintetiche e cefalosporine.