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