Thrombomodulin (Last Updated - 3/2/2005)

-integral membrane protein of vascular endothelial cells
-allows thrombin (Factor IIa) to activate protein C as an endogenous anti-coagulatory regulation system

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References:

Goodman & Gilman's: The Pharmacologic Basis Of Therapeutics - 10th Edition - 2001. Chapter 55.