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. 2021 Jul 2;9:629270. doi: 10.3389/fbioe.2021.629270

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Copyright © 2021 Han, Lian, Wu, Qiao, Sun and Dai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Sirius Red and Safranine O with Fast-green staining of the cell-supported scaffolds. Chondrocyte differentiation from bone marrow mesenchymal stem cells on the 50-, 100-, 200-, 300-, and 400-μm-pore-size scaffolds for 21 days.