Dynamics of γH2AX formation and elimination in mammalian cells after X-irradiation

► Bystander effect is completely eliminated 24 h after X-ray. ► γH2AX is eliminated slowly from heart and brain after X-ray. ► In heart the level of γH2AX is lower than in brain, kidney and liver after X-ray. ► Variations in γH2AX dynamics correlates with the expression level of the ATM, DNA-PK.