Vol. 216, No. 8, August 5, 2019. 10.1084/jem.20190490.

JEM regrets that in the original version of this paper, panels E-G were mistakenly omitted from Fig. 4 due to a production error. The corrected and complete Fig. 4 appears on the following page.

The online and print versions of this article have been corrected. The error appears only in PDF versions downloaded on or before July 31, 2019.

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