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2500 BCE
Egyptians used bloodletting
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500 BCE
Greeks distinguished arteries and veins
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Leeuwenhoek viewer blood cells under a microscope
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First blood transfusion performed
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Landsteiner discovered three blood types: A, B, O
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Decastello discovered fourth blood type: AB
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Oliver established first blood donor service
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Mayo Clinic developed a way to store blood
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Dr. Bernard Fantus established the first blood bank
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Landsteiner discovered Rh Protein
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First case of AIDS
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Gallo identified the virus causing AIDS
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Development of ELISA test for AIDS
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Scientists developed blood-screening tests for infectious diseases
