Ito K, Takubo K, Arai F, Satoh H, Matsuoka S, Ohmura M, Naka K, Azuma M, Miyamoto K, Hosokawa K, Ikeda Y, Mak TW, Suda T, *Hirao A. Regulation of reactive oxygen species by Atm is essential for proper response to DNA double-strand breaks in lymphocytes.