Hideyo Noguchi's luetin experiment and the antivivisectionists.
D032761:Animal Experimentation; D000818:Animals; D006262:Health; D049672:History, 19th Century; D049673:History, 20th Century; D006805:Human Experimentation / Q000266:history*; D006801:Humans; D009519:New York City; D033281:Nontherapeutic Human Experimentation; D035842:Research Subjects; D013587:Syphilis / Q000266:history*; D006113:United Kingdom; D014481:United States; D014824:Vivisection / Q000266:history*; D035862:Vulnerable Populations