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| Symbol: Mg; atomic weight: 24.312; atomic number: 12 |
| Symbol: Hg; atomic weight: 200.59; atomic number: 80 |
| prothrombin (prəʊˈθrɒmbɪn) | |
| —n | |
| biochem See also phylloquinone a zymogen found in blood that gives rise to thrombin on activation | |
prothrombin pro·throm·bin (prō-thrŏm'bĭn)
n.
A glycoprotein formed by and stored in the liver and present in the blood plasma that is converted to thrombin in the presence of thromboplastin and calcium ion during blood clotting. Also called factor II.
| prothrombin (prō-thrŏm'bĭn) Pronunciation Key
A glycoprotein that is converted to thrombin during blood clotting. Prothrombin is formed by and stored in the liver. |