title: Letter: failure of cephradine in infective endocarditis.
mesh_terms: D000328:Adult; D002511:Cephalosporins / Q000627:therapeutic use*; D002515:Cephradine / Q000627:therapeutic use*; D004697:Endocarditis, Bacterial / Q000188:drug therapy* / Q000382:microbiology; D006801:Humans; D008297:Male; D010400:Penicillin G / Q000627:therapeutic use; D010403:Penicillin Resistance; D013290:Streptococcal Infections / Q000188:drug therapy* / Q000382:microbiology; D013291:Streptococcus / Q000187:drug effects
chemical_list: D002511:Cephalosporins; D002515:Cephradine; D010400:Penicillin G