History of Blood By Casey328 2500 BCE Egyptians used bloodletting to try to cure diseases 500 BCE Greeks Distinguished between arteries and veins 1659 Anton van Leeuwenhoek viewed blood cells under a microscope 1795 First blood transfusion is performed 1901 Karl Landsteiner discvered three blood types: A, B, O 1902 Alfred Decastello discovered fourth blood type: AB 1922 Percy Oliver established first blood donor service 1935 Mayo Clinic developed a method to store blood for transfusions 1937 Dr. Bernard Fantus established the first blood bank 1940 Karl Landsteiner discovered Rh protein 1959 First case of AIDS reported in the Congo 1984 Robert Gallo identified virus that caused AIDS 1985 Development of the ELISA test to screen for diseases such as HIV 1987 Scientists began developing blood-screen tests for infectious diseases