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Eminent describes pulmenary circulation. This shows the flow blood to and from the lungs.
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Spanish physician and theologian Michael Servetus suggests that blood flows from one side of the heart to the other through the lungs instead of through the wall between the ventricles.
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Jan Swammerdam was the first person to observe and describe a Red Blood Cell.
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Using a rudimentary microscope, Italian anatomist Marcello Malpighi observes the capillary system. This is a network of fine vessels that connect the arteries and the veins.
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Anton Van Leeuwenhoek approximates a Red Blood Cell's size as 25,000 times smaller than a fine grain of sand. This provides us with more of a precise description of Red Blood Cells.
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James Blundell performs the first recorded human to human blood transfusion which shows that you can use other peoples blood to put into someone's body.
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Sir William Osler observed that cell fragments from bone marrow make up the bulk of clots formed in blood vessels which led to the discovery of platelets.
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Karl Landsteiner discoveredthe three main human blood groups: A, B, and C. Which show your blood type.
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Alfred Von Discastello and Adriano Sturli, parters of Karl Landsteiner, discovered the fourth blood group "AB".
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Dr. Richard Lewisohn formulated the optimum concentration of sodium citrate that can be mixed with donor blood. This prevents coagulation and determines that citrated blood can be stored and used later.
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