Objective To compare the propagation abilities of childhood acute lymphoblastic leukemia(ALL) CD34+ CD38-cell groups in non obese diabetic(NOD)/ severe combined immunodeficient(SCID)and NOD scid gamma(NSG) mice. Methods CD34+CD38-cell groups and other groups(CD34+CD83+,CD34-CD38-and CD34-CD38+)groups as negative control were isolated from children with ALL with immunomagnetic microbeads,and transplanted into NOD / SCID or NSG mice by tail vein injection,104cells for each. The onset of mice was monitored con...