Objective: To assess the characteristics of establishing the different sample banks of plasma,leukocytes and DNA by sedimentation method of isolating from ethylene diamine tetraacetic acid( EDTA)-blood and to clarify the sedimentation method of leukocyte isolation and plasma volume by comparative data and recommended procedures for applicability. Methods: In the study,29 EDTA-bloods were obtained,the total amounts of leukocytes and the percentage of neutrophile granulocytes,and lymphocytes in the EDTA-blood...