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. 2019 Feb 7;10:51. doi: 10.1186/s13287-018-1130-8

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© The Author(s). 2019

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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Effective MSCs delivery for bone regeneration. A (a) Release of ADSCs from alginate microbeads with different concentration of alginate-lyase by electrostatic droplet extrusion. (b) ADSC-encapsulated alginate-lyase microbeads revealed high expression of BMP-2 and FGF-2 that regulates bone regeneration. Reproduced with permission from Reference [85]. Copyright 2013 Elsevier. B (a) Printed agarose-collagen 3D columns and rings using inkjet bioprinting. (b) Alizarin red staining for hBMSC-loaded agarose-collagen hydrogel scaffold. Reproduced with permission from Reference [86]. Copyright 2016 John Wiley and Sons