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Egyptians used bloodletting to try to cure diseases.
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Greeks distinguished between arteries (oxygenated blood from the heart) and veins (deoxygenated blood towards the heart).
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Anton van Leeuwenhoek viewed blood cells under a microscope.
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First blood transfusion performed. A transfusion is an act of transferring donated blood, blood products, or other fluid into the circulatory system of a person.
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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 Landsteiner discovered the Rh protein, which tells if the blood is positive or negative.
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First case of HIV/AIDS reported in the Congo.
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Robert Gallo identified the virus that causes AIDS
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Development of the ELISA (enzyme-linked immunosorbent assay) test to screen for diseases such as HIV by detecting and measuring antibodies in the blood.
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Scientists began developing blood-screening test for infectious diseases.
