Nat. Med. 22, 194–201 (2016); published online 18 January 2016; corrected after print 25 August 2016

In the version of this article initially published, the concentrations of H2O2 were incorrectly labeled as micromolar (μM) instead of millimolar (mM) in the legends of Figures 1h, 3c–f and Supplementary Figures 3, 8f–h, 10g,j and 12c,d. The error has been corrected in the HTML and PDF versions of the article.