The effect of SATB1 knockdown on the radioresponse of cancer cells. (A, B) Short-term radiosensitivity of cells after SATB1 knockdown was measured by XTT assay with mean and SE shown in KM12C and KM12L4a cells (*P<0.05, **P<0.001). (C, D, E) Long-term radiosensitivity was determined by clonogenic assay in KM12C cells, KM12L4a cells and the both cell lines (*P < 0.05, **P < 0.001).