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. 2020 Jun 5;20(2):1693–1701. doi: 10.3892/etm.2020.8841

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Copyright: © Liu et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Establishment of an in vitro model of osteoarthritis. CHON-001 cells were treated with 10 ng/ml IL-1β for 24 h. (A) Expressions of MMP1, MMP13 and collagen II in CHON-001 cells were detected by western blotting. (B) Relative protein expression of MMP1 was normalized to β-actin. (C) Relative protein expression of MMP13 was normalized to β-actin. (D) Relative protein expression of collagen II was normalized to β-actin. ^**P<0.01 vs. control. MMP, matrix metalloproteinase; IL-1β. IL, interleukin.