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. 2021 Jun 9;9:630977. doi: 10.3389/fbioe.2021.630977

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Copyright © 2021 Zhou, Chen, Ding, Hu, Cen 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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The cross-section morphology of the Col/PVA dual-layer membrane showing (A1) both layers, (A2) collagen layer, (A3) PVA layer. TG analysis of (B1) Col/PVA dual-layer membrane, (B2) pure PVA membrane. WCA of (C1) collagen side, (C2) PVA side of the Col/PVA dual-layer membrane, (C3) pure PVA membrane.