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Leonardo da Vinci started disecting corpses to learn more about them.
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Anton van Leeuwenhoek discovers blood cells
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William Harvey publishes An Anatomical Study of the Motion of the Heart and of the Blood in Animals which forms the basis for future research on blood vessels, arteries and the heart
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Louis Pasteur identifies germs as cause of disease
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First vaccine developed for typhoid fever
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Karl Landsteiner introduces the system to classify blood into A, B, AB, and O groups
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Smallpox is eradicated
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Willem J. Kolff invented the artificial kidney dialysis machine
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First vaccine to target a cause of cancer
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Persian Physician Rhazes Identifies small pox
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