human neutrophils were isolated from peripheral blood by four methods : 1 ) ficoll-hypaque gradients and erythrocyte lysis , 2 ) plasma-percoll gradients , 3 ) a `` '' lipopolysaccharide ( lps ) -free '' '' method yielding 85 % neutrophils , and 4 ) by centrifugation of cells prepared by method 3 through a plasma-percoll gradient to produce pure neutrophils .
C0229664
peripheral blood
C0014792
erythrocyte