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  Leonardo da Vinci dissects corpses.
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  Zacharius Jannssen invents the microscope.
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  Sir Christopher Wren experiments with canine blood transfusions.
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  Anton van Leeuwenhoek discovers blood cells.
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  James Lind publishes his Treatise of the Scurvy stating that citrus fruits prevent scurvy.
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  Claudius Aymand performs the first successful appendectomy.
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  Sir Humphry Davy discovers the anesthetic properties of nitrous oxide
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  Rene Laennec invents the stethoscope
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  Elizabeth Blackwell is the first woman to gain a medical degree from Geneva Medical College in New York.
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  Charles Gabriel Pravaz and Alexander Wood develop the syringe.