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. 2021 Nov 9;13(22):3868. doi: 10.3390/polym13223868

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© 2021 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) A triplex helix structure plotted from RCSB protein data bank (https://www.rcsb.org/ accessed on 1 May 2021). (b) A triplex helix structure model.