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. 2022 Mar 1;23(5):2743. doi: 10.3390/ijms23052743

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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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Hematoxylin and eosin (H&E) staining analysis of knee articular cartilages. (A) Representative H&E stained images of cartilage on weeks 20 (right knee) and 32 (left knee) in each group. Note that denser cell distributions in MA-ECM and LCCM/MA-ECM groups compared to the other groups. (B) H&E stained images of normal cartilage. Black arrows: margins of the osteochondral defect area; black dotted rectangle: low power view (40×) of the area within the rectangle in the right panel (100×). Scale bars = 500 μm.