Correction to: Nature Immunology https://doi.org/10.1038/s41590-020-0778-2, published online 24 August 2020.

In the version of this article initially published online, in Fig. 4b, the cells on the far left of the graph were incorrectly identified as CD44+ cells. The correct label is CD45+ cells. The error has been corrected in the print, PDF and HTML versions of the article.