all the strains were susceptible to kanamycin , amikacin , cefotaxime , cefuroxime , chloramphenicol , fosfomycin , mezlocillin , nitrofurantoin , piperacillin , piperimidic acid , polymyxin b , sisomycin and tobramycin , and resistant to cephalotoxin , ampicillin and trimethoprim-sulfamethoxazole .
C0031955
piperacillin
C0002680
ampicillin