Correction to: Nature Immunology https://doi.org/10.1038/ni.3258, published online 21 September 2015.

In the version of this article initially published, Fig. 2a, lower right panel, duplicated the flow cytometric profile in Fig. 2b, upper left panel. The correct cytometric profile is shown below. The error has not been corrected in the original article.

Fig. 2
figure 1

Original and Corrected.