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. 2017 Jul 6;7:144. doi: 10.1186/s13568-017-0442-x

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© The Author(s) 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 4 — Scanning electron microscope photomicrographs of beads. Beads encapsulated form only with chitosan coating (left) and beads encapsulated form with chitosan and Eu S100 nanoparticles coating (right)