one hundred and thirty-seven coagulase-positive strains of staphylococcus aureus , isolated from dogs , were tested against three synthetic penicillins ( cloxacillin , dicloxacillin , and ampicillin ) and also phage typed using bacteriophages which are employed in typing staphylococci isolated from man .
C0009077
cloxacillin
C0012093
dicloxacillin