title: The relative activity of penicillins F, G, K, and X against spirochetes and streptococci in vitro.
authors.forename: H
authors.initials: H
authors.lastname: EAGLE
mesh_terms: D066298:In Vitro Techniques; D010400:Penicillin G / Q000031:analogs & derivatives; D010406:Penicillins / Q000494:pharmacology*; D013144:Spirochaetales
chemical_list: D010406:Penicillins; C065221:penicillin K; C067075:penicillin F; D010400:Penicillin G; C037825:penicillin X