in this investigation , the in vitro activities of several recently introduced cephalosporins ( cefoperazone , cefotaxime , ceftazidime , and ceftizoxime ) , moxalactam , and n-formimidoyl thienamycin were compared with those of cefoxitin , clindamycin , and metronidazole against 203 strains of anaerobic bacteria .
C3536856
cephalosporins
C0007560
ceftizoxime