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. 2022 Jan 14;11(2):282. doi: 10.3390/cells11020282

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© 2022 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 (https://creativecommons.org/licenses/by/4.0/).

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Relative expression level of genes: collagen II, aggrecan, and SOX-9 in freshly isolated chondrocytes. The results were normalized to the expression level of collagen I in isolated cells. * Significantly different results compared with expression level of collagen I; ^$ significantly different results compared with expression level of aggrecan; ^# significantly different results compared with expression level of SOX-9; one-way ANOVA test followed by Tukey’s multiple comparison, p < 0.05.