Masking of syphilis.
D000818:Animals; D006069:Gonorrhea / Q000150:complications / Q000188:drug therapy*; D006801:Humans; D008297:Male; D010406:Penicillins / Q000627:therapeutic use*; D013587:Syphilis / Q000150:complications / Q000175:diagnosis*; D013588:Syphilis Serodiagnosis
D010406:Penicillins