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. 2021 Jun 30;8(4):rbab020. doi: 10.1093/rb/rbab020

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© The Author(s) 2021. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — AG@MSNs-PAA prevents cartilage changes induced by ACLT in OA rats. (a, b) Cartilage was stained by hematoxylin and eosin (HE) and safranin O/fast green after treatment for 4 and 8 weeks (scale bar: 500 nm). (c, d) OARSI scores for histological changes of articular cartilage after treatment for 4 and 8 weeks. Data were represented as the mean ± SD (n = 5). **P < 0.01; ***^,###P < 0.001.