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Egyptians used bloodletting to try to cure diseases.
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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 performed.
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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 Congo.
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Robert Gallo identified the virus causing AIDS.
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Development of the ELISA test to screen for diseases such as HIV.
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Scientists began developing blood-screening tests for infectious diseases.
