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. 2019 Dec 18;10:396. doi: 10.1186/s13287-019-1483-7

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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. 1 — Characterization of hUSCs and hPDLSCs. a, f Primary hUSCs and hPDLSCs. b, g hUSCs and hPDLSCs grown in culture medium and exhibiting rice grain-like and long spindle-shaped morphology, respectively. c, h After osteogenic induction for 21 days, mineral deposits formed by hUSCs and hPDLSCs were stained with alizarin red. d, i Cultured in adipogenic medium for 21 days, lipid-laden lobules formed by hUSCs and hPDLSCs were detected with Oil Red O. e, j Cytometric flow analysis indicated that both hUSCs and hPDLSCs expressed the mesenchymal associated markers CD90 and CD105, and were negative for CD31, CD34, and CD45