cephalosporins developed recently such as cefotaxime , cefoperazone , ceftizoxime , latamoxef etc . show very potent antimicrobial activity against gram-negative bacilli , but their activity against s. aureus and s. epidermidis is weaker than that of cefotiam , cephalothin , cefazolin etc .
C3536856
cephalosporins
C0007560
ceftizoxime