title: Infections of man and group R streptococci.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008581:Meningitis / Q000188:drug therapy / Q000209:etiology*; D010400:Penicillin G / Q000627:therapeutic use; D013290:Streptococcal Infections / Q000188:drug therapy
chemical_list: D010400:Penicillin G