peripheral blood lymphocytes from b cells from cll patients with high ( greater than 10 ( 5 ) /microliters ) white blood cell counts were depleted of residual t lymphocytes and low-density cells ( primarily macrophages ) by consecutive steps of e rosetting , complement-mediated lysis of okt3+ and okt4+ cells , and percoll density gradient centrifugation .
C0004561
lymphocytes
C0023434
cll