The amount of reducing substance and the period of {HEAD ~ time} for {TAIL ~ interaction} are so adapted to obtain the product desired, whereafter the blood and plasma, respectively, are optionally fractionated in a known manner 
The amount of reducing substance and the period of { HEAD ~ time } for { TAIL ~ interaction } are so adapted to obtain the product desired , whereafter the blood and plasma , respectively , are optionally fractionated in a known manner
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH