Blood History By Pdunlap 2500 BCE Egyptians used bloodletting 500 BCE Greeks distinguished arteries and veins 1659 Leeuwenhoek viewer blood cells under a microscope 1795 First blood transfusion performed 1901 Landsteiner discovered three blood types: A, B, O 1902 Decastello discovered fourth blood type: AB 1922 Oliver established first blood donor service 1935 Mayo Clinic developed a way to store blood 1937 Dr. Bernard Fantus established the first blood bank 1940 Landsteiner discovered Rh Protein 1959 First case of AIDS 1984 Gallo identified the virus causing AIDS 1985 Development of ELISA test for AIDS 1987 Scientists developed blood-screening tests for infectious diseases
