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Start Over Collections Images from the History of Medicine (IHM) ✖Remove constraint Collections: Images from the History of Medicine (IHM) Subjects Smallpox Vaccine -- therapeutic use ✖Remove constraint Subjects: Smallpox Vaccine -- therapeutic use Titles Yu fang tian hua, kuai zhong niu dou ✖Remove constraint Titles: Yu fang tian hua, kuai zhong niu dou

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