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The Egyptians used bloodletting to try to cure disease.
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The Greeks had distinguished the differences between the arteries and veins.
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Blood cells were first observed under a microscope by Anton van Leeuwenhoek.
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The first blood transfusion was preformed in 1795.
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In 1901 Karl Landsteiner had discovered the three blood types: A, B, and O.
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Alfred Decastello discovered AB, the fourth blood type group.
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The first blood donation was formed in 1922 by Percy Oliver.
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Mayo Clinic had developed a method to store blood for transportation.
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The first blood bank was founded by by Dr. Bernard Fantus.
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Karl Landsteiner discovered the Rh protein.
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In the Congo, the first case of AIDS was recorded.
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HIV, the AIDS causing virus, was identified by Robert Gallo.
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ELISA, a screening test for diseases such as HIV, was developed.
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Blood screening tests for infectious diseases were developed by scientists.
