the susceptibilities of 347 urine isolates of enterococci ( streptococcus faecalis , 44 % ; s. faecalis subsp . zymogenes , 37 % ; s. faecalis subsp . liquefaciens , 19 % ) to ampicillin , azlocillin , mezlocillin , piperacillin , vancomycin , gentamicin , erythromycin , rosaramicin , rifampin , rifampin plus trimethoprim ( 1:4 ) , trimethoprim-sulfamethoxazole ( 1:20 ) , and chloramphenicol were determined by the agar dilution technique .
C0002680
ampicillin
C0031955
piperacillin