both agents inhibited escherichia coli , klebsiella pneumoniae , k. oxytoca , proteus mirabilis , salmonella species , shigella species , citrobacter diversus , and aeromonas hydrophila resistant to ampicillin , cephalexin , and cefaclor at less than or equal to 2 micrograms/ml , although many isolates of enterobacter cloacae , citrobacter freundii , and serratia marcescens resistant to cefotaxime were not inhibited by these agents .
C0007716
cephalexin
C0007537
cefaclor