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. 2022 Jul 7;10:952500. doi: 10.3389/fbioe.2022.952500

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Copyright © 2022 Wu, Zhao, Lin and Wang.

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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After PDA modification and Ag decoration, changes of chemical components on HA substrates are detected by (A) FTIR, and the characteristic peaks are identified. The characteristic peaks of PDA (1602 cm^-1 and 1515 cm^-1) can be observed. Changes of crystalline structures are detected by (B) XRD analysis, and the crystalline structures stay unchanged after PDA modification, where the quadrangles represent peaks of Ag and the pentagrams represent peaks of HA. (Zhang et al., 2021). Copyright 2021, Elsevier.