. Author manuscript; available in PMC: 2021 Mar 29.
Published in final edited form as: Nat Immunol. 2020 Aug 3;21(10):1244–1255. doi: 10.1038/s41590-020-0744-z
Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use: http://www.nature.com/authors/editorial_policies/license.html#terms