relationship between penicillinase production and the in-vitro activity of methicillin , oxacillin , cloxacillin , dicloxacillin , flucloxacillin , and cephalothin against strains of staphylococcus aureus of different phage patterns and penicillinase activity .
C0009077
cloxacillin
C0012093
dicloxacillin