Concentrates of one of the coagulation factors II, V and VIII or a mixture thereof or blood plasma free from one or more of the coagulation factors VII, IX, X, XI and XII can be prepared by adding {HEAD ~ a reducing substance} comprised of {TAIL ~ dithiothreitol}, dithioerythritol, lipoic acid, mercaptoethanol, or a borohydride to blood or plasma, dithiothreitol being preferred 
comprised of
Concentrates of one of the coagulation factors II , V and VIII or a mixture thereof or blood plasma free from one or more of the coagulation factors VII , IX , X , XI and XII can be prepared by adding { HEAD ~ a reducing substance } comprised of { TAIL ~ dithiothreitol } , dithioerythritol , lipoic acid , mercaptoethanol , or a borohydride to blood or plasma , dithiothreitol being preferred
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH