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. 2018 Mar 14;20:43. doi: 10.1186/s13075-018-1547-6

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Bi-Qi capsule (BQ) or methotrexate (MTX) alleviated collagen-induced arthritis (CIA)-induced synovial membrane hyperplasia. Representative histological images of synovial membrane from the paw joint with H&E staining. Red arrow, synoviocyte; black arrow, plasmocyte; green arrow, lymphocyte; yellow arrow, pannus; blue arrow, vascular endothelial cells; white arrow, fibrous tissue growth