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thromboplastin

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throm⋅bo⋅plas⋅tin

[throm-buh-plas-tin]
–noun
1. Biochemistry. a lipoprotein in the blood that converts prothrombin to thrombin.
2. Pharmacology. a commercial form of this substance, obtained from the brains of cattle, used chiefly as a local hemostatic and as a laboratory reagent in blood prothrombin tests.
Also called throm⋅bo⋅ki⋅nase [throm-boh-kahy-neys, -kin-eys] .


Origin:
1910–15; thrombo- + -plast + -in 2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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throm·bo·plas·tin   (thrŏm'bō-plās'tĭn)   
n.  A protease that converts prothrombin to thrombin in the early stages of blood clotting. Also called thrombokinase.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: throm·bo·plas·tin
Pronunciation: "thräm-bO-'plas-t&n
Function: noun
: a complex enzyme that is found in brain,lung, and other tissues and especially in blood platelets and that functions in the conversion of prothrombin to thrombin in the clotting of blood called also thrombokinase
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

thromboplastin throm·bo·plas·tin (thrŏm'bō-plās'tĭk)
n.
A plasma protein present in tissues, platelets, and white blood cells necessary for the coagulation of blood and, in the presence of calcium ions, necessary for the conversion of prothrombin to thrombin. Also called factor III, platelet tissue factor, thrombokinase.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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