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. 2020 Oct 1;25(19):4502. doi: 10.3390/molecules25194502

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© 2020 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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Scanning Electron Microscopy (SEM) and energy dispersive X-ray (EDX) elemental mapping images and EDX spectra of freeze-dried bioshell calcium oxide (BiSCaO) Water. Two different regions of the sample were analyzed (left and right). Yellow, red, and green pictures show the presence of carbon, oxygen, and calcium, respectively, by EDX elemental mapping.