Objective To investigate the feasibility of Wilms' tumor gene 1(WT1)- specific CD8+T cells from periph-eral blood for the treatment of breast cancer by detecting the killing activity of WT1 specific CD8+T cells on breast cancercells. Methods Flow cytometry was used to detect WT1-specific CD8+T cells in the peripheral blood of 20 samples fromHLA-A2 seropositive healthy donors, which were isolated by WT1/MHC streptamer magnetic beads and cultured. The func-tion of WT1-specific CD8+T cells were analysis by cyt...