Preliminary observations of the action of penicillin on Treponema pallidum in vivo.
D006801:Humans; D010406:Penicillins; D013587:Syphilis / Q000628:therapy*; D014210:Treponema pallidum / Q000187:drug effects*
D010406:Penicillins
SYPHILIS/therapy; TREPONEMA PALLIDUM/effect of drugs on