a total of 229 clinical isolates of streptococcus pneumoniae recovered from 225 patients were serotyped and tested for susceptibility to penicillin g , ampicillin , mezlocillin , cefazolin , erythromycin , clindamycin , chloramphenicol , and sulfamethoxazole-trimethoprim .
C0002680
ampicillin
C0025893
mezlocillin