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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Clin Geriatr Med. 2022 May;38(2):193–219. doi: 10.1016/j.cger.2021.11.015

Figure 3:

Figure 3:

Fibroblast like synoviocytes (FLS) and macrophages are key cell types present in the synovium. FLS exhibit increased proliferation and migration, and also acquire a myofibroblast like phenotype, resulting in the excessive ECM deposition in the synovium during osteoarthritis.