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. 2021 Mar 5;14(5):1225. doi: 10.3390/ma14051225

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© 2021 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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Stereo-light microscopic images of 3D scaffolds printed using different inks. (A) The 3–6 composite inks containing 3, 5, 7 and 10% of 0ZnMBG (15% Ca), yellow arrows show agglomerates of added MBG, (B) 3–6 composite inks containing 3, 5, 7 and 10% 15ZnMBG (0% Ca), (C) 3–6 ink without any MBG, (D) 3–6 composite inks containing 7% of 5ZnMBG (10% Ca) and 7% of 10ZnMBG (5% Ca). Green line marks selected combinations of 3–6 composite inks for further experiments, (E) 3–9 composite inks containing 7% of each ZnMBG. Scale bars represent 2 mm.