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. 2019 Apr 27;10:126. doi: 10.1186/s13287-019-1229-6

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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. 2 — Scanning electron microscopy micrographs of Wj-MSCs growing on electrospun SF scaffold at different cell densities. SF patches were seeded at a density of 3 × 10⁴cells/cm² (a), 4 × 10⁴cells/cm² (b), 5 × 10⁴cells/cm² (c), and 6 × 10⁴cells/cm² (d) and cultured for 4 days. Images at a magnification of × 20, × 100, × 500, and × 3000 are shown. N = 3