Objective To investigate the effect of RetroNectin on the proliferation,immunologic characteristics and cytotoxicity of cytokine-induced killer cells(CIK).Methods Peripheral blood mononuclear cells(PBMC) were collected from healthy donors and divided into two groups: RN group and Non-RN group.The proliferation of CIK cells was tested by cytometirc analysis.The cytotoxic activity of CIK cells was determined by CFSE/PI double-labeling assays.The cytokine secretion profile of RN group and Non-RN group was anal...