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Cairo physician Ibn al-Nafis discovers the flow of blood from an to th lungs
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Spanish physician Michael Servetis describes that blood flows from one side of the heart to the other to the lungs instead of through the wall btwwen the ventricles
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Fabricius is the first to draw the veins
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William Harvey publishes his book ab out how the blood circulates within the body and pumped by the heart
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Jan Swammerdam, a 21-year-old Dutch microscopist, is thought to be the first person to observe and describe red blood cells.
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Richard Lower was the first to perform a recorded blood transfusion on animals
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Anton van Leeuwenhoek provides a more precise description of red blood cells, even approximating their size
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William Hewson describes blood cougulation and his success at arressting, clotting, and isoltiong a substance called fibrogen
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Philip Syng Physcs conducts first human to human blood transfusion
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British physioligist James Blundell performs the first recorded human blood transfusion
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Sir William Osler discovers plateletes which are small cell fragments from the bone marrow
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Karl Landsteiner detaikls three human blood groups A,B, and C which he soon turns to O
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Dr. Landsteiner's colleagues identify blood type AB
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Dr. Richard Lewisohn added sodium citrate to blood to prevent it coagulation
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Dr. serge Yuddin is the first to do a blood transfusion using a cadver's blood.
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Federico Duran-Jorda establishes the Blood Transfusion Service which stores, collects, and transfuses blood to patients
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Dr. Bernard Fantus creates the term "blood bank" and establishes one in Chicago
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In 1940, Drs. Karl Landsteiner and Alexander Wiene discover the Rh blood group
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Edwin Cohn creates fractionation to find a subsitute for blood plasma
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Dr. Carl W. Walter creates a bag to store blood in