A method 1 wherein said leukocyte containing suspension is caused to flow, by {TAIL ~ means} of {HEAD ~ instillation}, through the container having packed therein said mass of fibers having 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 { TAIL ~ means } of { HEAD ~ instillation } , through the container having packed therein said mass of fibers having 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 TAIL TAIL TAIL TAIL TAIL OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH