[THE CEPHALOSPORINS].
D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D055598:Chemical Phenomena; D002621:Chemistry; D010406:Penicillins
D000900:Anti-Bacterial Agents; D002511:Cephalosporins; D010406:Penicillins
ANTIBIOTICS; CHEMISTRY; PENICILLIN
LAS CEFALOSPORINAS.