title: Possible penicillin treatment failure in primary syphilis.
authors.forename: D
authors.initials: D
authors.lastname: George
authors.forename: W J
authors.initials: WJ
authors.lastname: Alexander
mesh_terms: D000328:Adult; D002601:Chancre / Q000188:drug therapy*; D006801:Humans; D008297:Male; D010400:Penicillin G / Q000627:therapeutic use*; D010401:Penicillin G Benzathine / Q000627:therapeutic use*; D013587:Syphilis / Q000188:drug therapy*
chemical_list: D010400:Penicillin G; D010401:Penicillin G Benzathine