seventy-four strains of streptococcus bovis and 35 strains of enterococci ( streptococcus faecalis and its varieties , streptococcus faecium and streptococcus durans ) , most of which were isolated from patients with endocarditis , were tested for their susceptibility to penicillin , ampicillin , erythromycin , cephalothin , vancomycin , methicillin , tetracycline , chloramphenicol , kanamycin , streptomycin , and gentamicin .
C0030842
penicillin
C0025643
methicillin