Method and {HEAD ~ apparatus} for separating {TAIL ~ serum} or plasma from the formed elements of the blood 
for separating
Method and { HEAD ~ apparatus } for separating { TAIL ~ serum } or plasma from the formed elements of the blood
OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH