The American perspective.
D000818:Animals; D004812:Epidemiologic Methods; D006069:Gonorrhea / Q000266:history; D006266:Health Education; D049673:History, 20th Century; D006782:Hospitals, Special / Q000266:history; D006801:Humans; D007391:International Cooperation; D010406:Penicillins / Q000627:therapeutic use; D011817:Rabbits; D012749:Sexually Transmitted Diseases / Q000266:history* / Q000517:prevention & control; D013587:Syphilis / Q000188:drug therapy; D013588:Syphilis Serodiagnosis / Q000266:history; D014209:Treponema Immobilization Test / Q000266:history; D014211:Treponemal Infections / Q000266:history; D014481:United States
D010406:Penicillins