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. 2020 Dec 23;10(1):8. doi: 10.3390/antiox10010008

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Representative sections of synovial membrane from both knee joints of rats. (a) Sample from a rat after sham operation (control group). Note the low-grade inflammatory cell infiltrate and the mild increases of synovial hyperplasia and stroma activation. (b) Sample from a rat after anterior cruciate ligament transection (OA group), in which there is more infiltration by inflammatory cells. (c) Sample from a rat after ACLT and treated with EGCG (10 μM EGCG group) shows similar sham-operated joints with a fewer infiltrating cells than the OA joint.