[Studies on the level of benzathine penicillin G in the blood of patients with early syphilis].
D006801:Humans; D010401:Penicillin G Benzathine; D010406:Penicillins / Q000097:blood*; D013587:Syphilis / Q000628:therapy*
D010406:Penicillins; D010401:Penicillin G Benzathine
PENICILLIN/blood; SYPHILIS/therapy