the in vitro activities of sch 34343 , a new penem antibiotic , and cefbuperazone , a new cephamycin antibiotic , were determined against 459 clinical anaerobic bacterial isolates and compared with the activities of imipenem and cefoxitin , respectively , by an agar dilution method .
C0007736
cephamycin
C0007557
cefoxitin