(A) Short term (1 min, left-panel) and long term (2 h, right-panel) time-lapse imaging of YFP-DNA-PKcs-expressing V3/vector, V3/HMGA2, and V3/HMGA2(4P/A) cells before and after microirradiation. (B and C) Initial accumulation (B) and 2 h time-course accumulation (C) kinetics of YFP-DNA-PKcs of respective cells at DSB sites after microirradiation. Error bars, ± SD from 10 independent measurements.