antibiotics tested were chosen according to the bacterial species : vancomycin , cefotaxime , oxacillin , tobramycin , rifampicin against 15 isolates of staphylococcus , ampicillin , piperacillin , vancomycin , rifampicin against 10 isolates of enterococci , piperacillin , ofloxacin , tobramycin against 5 e. coli strains .
C0002680
ampicillin
C0031955
piperacillin