hr 810 had more potent protective effect than ceftazidime ( caz ) , cefoperazone ( cpz ) , and cefotaxime ( ctx ) on systemic infections induced by escherichia coli ec-31 , staphylococcus aureus smith , and serratia marcescens sm-6 in mice .
C0007554
cefotaxime
C0243026
systemic