The present invention provides a method of measuring {HEAD ~ the activity} of {TAIL ~ a substance} to test how it inhibits or promotes the production of the blood coagulation factor XII in an active form  
of
The present invention provides a method of measuring { HEAD ~ the activity } of { TAIL ~ a substance } to test how it inhibits or promotes the production of the blood coagulation factor XII in an active form
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH