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. 2020 Aug 18;12(8):1850. doi: 10.3390/polym12081850

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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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Typical round-shaped images of the keratinocytes cytoskeleton (arrows) obtained by immunofluorescence, from Niculiţe et al. [26]. Copyright MDPI, 2018 (a). Bone histology obtained after using silica-loaded carboxilated doxycycline-doped membranes (b,c) and blank control (no membrane) (d), by coloration with toluidine blue to visualize the elongated fibroblasts (pointers in (b)), fusiform endothelial cells of blood vessels (double arrows in c) and cuboid osteoblastic cells (faced arrows in (d)), at 6 weeks of healing time in animal experimentation (Toledano et al./MAT2017-85999P).