WB
(B, C, D) The protein levels of p-53BP1, p-ATM, ATM, γH2AX, and β-actin were detected by Western blotting. Right and down: quantitative analysis of the optical density ratio of p-53BP1, p-ATM, γH2AX compared with the loading control (β-actin) in HCT116 and HCT8.