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. 2021 Nov 12;9:764212. doi: 10.3389/fbioe.2021.764212

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Copyright © 2021 Lin, Sun, Li, Yuan, Cheng, Ke, Chen, Sun, Mi and Zhang.

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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Concentration of VEGF and ANG secreted protein in the supernatant of the three-dimensional scaffold on Day 1, 3, 5, and 7. (A) A. VEGF secreted protein concentration (pg/ml); (B) ANG secreted protein concentration (pg/ml).