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2500 BCE
egyptians used bloodletting to try to cure diseases
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500 BCE
Greeks distinguished between arteries and veins
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Anton Van Leeuwenhoek viewed blood cells under a microscope.
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first blood transfusion preformed
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Karl Landsteiner discovered three blood types: A,B,O
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Alfred Decastello discovered fourth blood type: AB
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Percy Oliver established the first blood donor service
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Mayo Clinic developed a method 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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scientist began developing blood-screening tests for infectious diseases
