A method 1 wherein said leukocyte containing suspension is caused to flow, by means of instillation, through the container having packed therein said {TAIL ~ mass} of fibers having {HEAD ~ a bulk density} of from 0.04 to 0.15 gram/cubic centimeter and an average fiber diameter of from 5 to 10 microns, whereby a substantial part of the leukocytes is entrapped in said mass of fibers and a leukocyte poor liquid is obtained 
A method 1 wherein said leukocyte containing suspension is caused to flow , by means of instillation , through the container having packed therein said { TAIL ~ mass } of fibers having { HEAD ~ a bulk density } of from 0.04 to 0.15 gram / cubic centimeter and an average fiber diameter of from 5 to 10 microns , whereby a substantial part of the leukocytes is entrapped in said mass of fibers and a leukocyte poor liquid is obtained
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH