History of Blood by Katelynn Milligan Per. 7 By 40007479 2500 BCE Egyptians used bloodletting to try to cure disease 500 BCE Greeks distinguished between veins and arteries 1659 Anton Van Leeuwenhoek viewed blood cells under the microscope 1795 first blood transfusion performed 1901 Karl Landsteiner discovered O, A, B, blood types 1902 Alfred Decastello discovered the fourth blood type AB 1922 Percy Oliver established the first blood donor service 1935 Mayo Clinic developed a method to store blood for transfusion 1937 Dr. Bernard Fantus established the first blood bank 1940 Karl Landsteiner discovered the Rh protein 1959 First case of aids reported in the Congo 1984 Robert Gallo identified the virus causing AIDS 1985 Development of ELISA test to screen for diseases such as HIV 1987 Scientists began developing blood-screening tests for infectious disease