The chamber 51 also includes {TAIL ~ a supplemental ramp} 111 to urge or push the packed cells towards {HEAD ~ the packed cell removal port} 51c 
The chamber 51 also includes { TAIL ~ a supplemental ramp } 111 to urge or push the packed cells towards { HEAD ~ the packed cell removal port } 51c
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH