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. 2019 Aug 28;11(9):1417. doi: 10.3390/polym11091417

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© 2019 by the authors.

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 (http://creativecommons.org/licenses/by/4.0/).

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Transmission Electron Microscopy (TEM) analysis of copper nanoparticles on the modified chitosan microsphere. (a), (b) TEM image of copper nanoparticles. (c) TEM analysis of lattice spacing of copper nanoparticles.