Correction to: Nature Immunology https://doi.org/10.1038/ni.1821, published online 1 November 2009.

In the supplementary information originally posted for this article, in Supplementary Fig. 3, the flow cytometry plot in the spleen panel that is second from the left in the bottom row was incorrect. The correct plot is shown below. The error has not been corrected in the original article.

Supplementary Fig. 3
figure 1

Original and corrected.