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Egyptians used bloodletting to try to cure diseases
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Greek distinguished between arteries and veins
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Anton van Leeuwenhoek viewed blood cells under a microscope
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First ever blood transfusion was performed
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Karl Landsteiner discovered three blood types. A,B, and O
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Alfred Decastello discovered the fourth blood type, AB.
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Percy Oliver established the first blood donor service
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The Mayo Clinic developed a way to store blood for transfusions.
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Dr. Bernard Fantus established the first blood bank.
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Karl Landsteiner discovered the Rh protein.
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First case of AIDS recorded in the congo
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Robert Gallo identified the virus causing aids
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Development of ELISA test to screen for diseases such as HIV
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Scientists began developing blood-screening tests for infectious diseases