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. 2022 Mar 31;10:810880. doi: 10.3389/fbioe.2022.810880

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Copyright © 2022 Zhu, Liu, Wang, Zhu, Li, Zhu, Che, Liu, Liu and Huang.

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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(A) SEM micro-photographs of PLGA, PDA-PLGA, PLGA/HA, and PDA-PLGA/HA scaffolds. (B) Alizarin Red staining of MC3T3-E1 cells cultured on PLGA, PLGA/HA, PDA-PLGA, PDA-PLGA/HA, PDA-PLGA/BMP-2, PDA-PLGA/HA/BMP-2 on day 21. (C) Fluorescence staining of MC3T3-E1 cells cultured on the different scaffolds for 1–4 days. Reprinted with permission from (Zhao X. et al., 2017).