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. 2019 Jun 6;16:13. doi: 10.1186/s12950-019-0218-y

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© The Author(s). 2019

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. 1 — Decreased expression of GLP-1R in the cartilage tissues of a knee OA rat model. a Representative Western blots and quantification data of GLP-1R expression levels in control, OA-1, OA-5, OA-10, OA-20 and OA-28 groups (n = 5 per group). b Representative images (100 × and 200×) of immunohistochemical (IHC) staining and corresponding quantification of GLP-1R expression levels in the control and OA-28 groups (n = 5 per group). * indicates P < 0.05 compared with the control group