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Meaning of thromboplastin

throm•bo•plas•tin

Pronunciation: (throm"bu-plas'tin), [key]
— n.
  1. a lipoprotein in the blood that converts prothrombin to thrombin.
  2. 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
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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