Then the reaction is stopped and the blood coagulation factor {HEAD ~ XII} in an active form produced in {TAIL ~ the above reaction} is quantitatively determined 
produced in
Then the reaction is stopped and the blood coagulation factor { HEAD ~ XII } in an active form produced in { TAIL ~ the above reaction } is quantitatively determined
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH