The platelet rich plasma flows into {TAIL ~ the second part} and is separated into platelet poor plasma and {HEAD ~ platelets} 
The platelet rich plasma flows into { TAIL ~ the second part } and is separated into platelet poor plasma and { HEAD ~ platelets }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD