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2500 BCE
Bloodletting
Egyptians used bloodletting to try to cure diseases. -
500 BCE
Arteries or Veins
Greeks distinguished between arteries (oxygenated blood from the heart) and veins (deoxygenated blood towards the heart). -
Microscope
Anton van Leeuwenhoek viewed blood cells under a microscope. -
Transfusion
First blood transfusion performed. A transfusion is an act of transferring donated blood, blood products, or other fluid into the circulatory system of a person. -
Blood Groups
Karl Landsteiner discovered three blood types: A, B, and O. -
Another Blood Type
Alfred Decastello discovered the fourth blood type: AB. -
Donation
Percy Oliver established the first blood donor service. -
Storing Blood
Mayo Clinic developed a method to store blood for transfusions. -
Blood Bank
Dr. Bernard Fantus established the first blood bank -
Rh Protein
Karl Landsteiner discovered the Rh protein, which tells if the blood is positive or negative. -
AIDS
First case of HIV/AIDS reported in the Congo. -
Cause of AIDS
Robert Gallo identified the virus that causes AIDS -
ELISA Test
Development of the ELISA (enzyme-linked immunosorbent assay) test to screen for diseases such as HIV by detecting and measuring antibodies in the blood. -
Infectious Diseases
Scientists began developing blood-screening test for infectious diseases.