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. 2022 Feb 14;10:828921. doi: 10.3389/fbioe.2022.828921

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Copyright © 2022 Xu, Ji, Jiao, Zheng, Hong, Tang, Zhang, Qu and Yue.

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.

PMC Copyright notice

Schematic illustration of the composite bioinks (bi-DN gel). DN, double-network; CaCl₂, calcium chloride; BG, bioactive glass; TGF, transforming growth factors; Reproduced with permission (Liu et al., 2020). Copyright: ^©2020 Liu, Zhao, Zhu, Gao, Ye, Zhou, Qiu, Wang, Tian and, Qu.