Objective of this study was to evaluate the effectiveness and safety of autologous cytokine induced killer(CIK) cells combined with IL-2 in treatment of elderly patients with myelodysplastic syndromes(MDS).Peripheral blood mononuclear cells were isolated from 6 elderly MDS patients and were stimulated by cytokines in vitro to form CIK cells.The autologous CIK cells were then infused back into the corresponding patients.The regimen was repeated every 4 weeks.Effector cell proportion changes,adverse effects,e...