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. 2018 Mar 10;23(3):625. doi: 10.3390/molecules23030625

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© 2018 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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Scheme 1 — Schematic illustration of the synthesis of (a) CaCO₃ core microparticles, (b) core-shell microparticles with two CHT/ALG bilayers, (c) (CHT/ALG)₂-based hollow multilayered microcapsules after CaCO₃ core template dissolution with EDTA, and (d) well-dispersed (CHT/ALG)₂-based hollow multilayered microcapsules after purification by dialysis.