During the centrifuge process the buoy 14 stops at an interface of {HEAD ~ a plasma fraction} 224 and {TAIL ~ the red blood cell fraction} 222 because of the selected or tuned density of the buoy 14 
During the centrifuge process the buoy 14 stops at an interface of { HEAD ~ a plasma fraction } 224 and { TAIL ~ the red blood cell fraction } 222 because of the selected or tuned density of the buoy 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH