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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 microsccope
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First blood transfusion preformed
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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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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 Lansteiner discovered the Rh protein
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First case of AIDS recorded in the congo
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Robert Gallo indentified the virus carrying 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
