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. 2021 Jan 8;30:0963689720986142. doi: 10.1177/0963689720986142

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 7. — Effects of LIPUS stimulation after intra-articular injection of MSCs on OA cartilage. (A) Morphological changes of cartilage revealed by safranin-O/fast green staining and observed under a microscope; scale bars = 1000 μm, 200 μm. (B) Bar graph comparing the Mankin scores. (C) Bar graph comparing the TAC thickness (μm). (D) Western blot analysis of COL2, AGG, and β-actin expression in cartilage. The values are the mean ± SD; n = 4, *P < 0.05. LIPUS: low-intensity pulsed ultrasound; MSC: mesenchymal stem cell; OA: osteoarthritis; TAC: total articular cartilage.