1901 Landsteiner discovered human blood groups, from that blood transfusions became safer. Plasma, Red blood cells, White blood cells, and Platelets are the four components of blood. Blood is made of plasma, which is about ninety percent water. Plasma supply as the main transportation component in the body since it is the liquid part of blood. Red blood cells have a “lifespan” of about 120 days. The function of red blood cells is to transport oxygen throughout the body. Red blood cells have a protein…
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