Kallikrein (Last Updated - 2/27/2005)

-is formed during the activation of Factor XII to XIIa
-the above step is catalyzed by:
     1) prekallikrein
     2) high molecular weight kininogen (HMWK)
     3) kaolin

-click here to view an image of the clotting cascade

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References:

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