title: The relative effectiveness of pure penicillins G, X, and K.
authors.forename: R D
authors.initials: RD
authors.lastname: COGHILL
authors.forename: A E
authors.initials: AE
authors.lastname: OSTERBERG
authors.forename: G R
authors.initials: GR
authors.lastname: HAZEL
mesh_terms: D006801:Humans; D010400:Penicillin G / Q000031:analogs & derivatives; D010406:Penicillins
chemical_list: D010406:Penicillins; C065221:penicillin K; D010400:Penicillin G; C037825:penicillin X