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Claudius Aymand performs the first successful appendectomy
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Edward Jenner develops a smallpox vaccination method
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Elizabeth Blackwell is the first woman to gain a medical degree in the United States.
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First vaccine for cholera.
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Karl Landsteiner discovers the existence of different human blood types
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Edward Mellanby discovers vitamin D and shows that its absence causes rickets
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Manfred Sakel discovers insulin shock therapy
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Cloning – Robert Briggs and Thomas King
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Liposuction – Giorgio Fischer
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Artificial skin – John F. Burke and Loannis V Yannas