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. 2020 Oct 29;141(1):67–83. doi: 10.1007/s00401-020-02239-2

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© The Author(s) 2020

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Fig. 1 — B cells and plasma cells in the brain of patient hAE. Consecutive brain sections were reacted with antibodies against CD79a (a), CD19 (b), CD20 (c), CD27 (d), CD38 (e), CD138 (f) and human IgG (g). Positive reaction products are brown, and the tissue was counterstained with hematoxylin to show the nuclei in blue. The boxes with arrows mark details of a large perivascular cuff which are enlarged in the adjacent pictures. Note the presence of large numbers of IgG⁺ plasma cells in (g)