Vol. 215, No. 1, January 2018. https://doi.org/10.1084/jem.20171052

JEM regrets that in the original version of this paper, the labels appeared incorrectly in Fig. 7 A and Fig. S5 G as the result of a production error.

All versions of this article have been corrected.

This article is available under a Creative Commons License (Attribution 4.0 International, as described at https://creativecommons.org/licenses/by/4.0/).