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. 2021 Jun 8;9(6):e002273. doi: 10.1136/jitc-2020-002273

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See http://creativecommons.org/licenses/by-nc/4.0/.

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Representative Images of eTLS, pTLS, sTLS (left, middle, right column, respectively). (A) Aggregate CD20⁺CD21⁺CD23⁺ staining (B) CD20⁺ staining (C) CD21⁺ staining in a reticular network (pTLS and sTLS) (D) CD23⁺ germinal center-like structure (sTLS only). eTLS, early tertiary lymphoid structure; pTLS, primary follicle-like TLS; sTLS, secondary follicle-like TLS.