Accordingly, the method of the present invention in which the activity of the tested substance having an inhibiting or promoting action on the production of FXIIa is measured is very highly useful in screening {HEAD ~ compounds} or drugs related to {TAIL ~ blood clotting and fibrinolysis systems} 
related to
Accordingly , the method of the present invention in which the activity of the tested substance having an inhibiting or promoting action on the production of FXIIa is measured is very highly useful in screening { HEAD ~ compounds } or drugs related to { TAIL ~ blood clotting and fibrinolysis systems }
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