William Henry Howell
William Henry Howell
1860-1945
American physiologist and biochemist who isolated and characterized heparin, a substance that inhibits blood clotting, and conducted pioneering studies of the biochemistry of the blood. The activity of heparin preparations is now measured in terms of Howell units. He was the first to describe the "Howell-Jolly bodies" that are sometimes seen in erythrocytes, especially after a splenectomy. Howell demonstrated the presence of amino acids in the blood and lymph and conducted pioneering studies into the preparation and properties of thrombin, antithrombin, and prothrombin.
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Blood Transfusion , blood transfusion Blood, moved between bodies, has long been thought to rejuvenate its recipient. Though transfusion ‘proper’ — moving blood directly… Blood Plasma , blood plasma The almost colourless fluid that remains when all corpuscles have been removed from blood (present as a suspension after centrifugation… Blood Donation And Registry , Blood donation, also called blood banking, refers to the process of collecting, testing, preparing, and storing whole blood and blood components inte… Transfusion , Transfusion
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Definit… fibrinogen , fibrinogen A soluble blood protein that is acted upon by the enzyme thrombin during blood clotting to give the insoluble protein fibrin. See also BLO… Blood Bank , blood bank, site or mobile unit for collecting, processing, typing, and storing whole blood, blood plasma and other blood constituents. Most hospital…
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William Henry Howell