all strains were sensitive to the semisynthetic penicillins ampicillin , carbenicillin , oxacillin , cloxacillin , and methicillin , but 10 of the 13 strains were resistant to penicillin g , as well as a number of cephalosporins , such as cephalothin , cephapirin , and cephalosporin c .
C0029983
oxacillin
C0009077
cloxacillin