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. 2020 Feb 13;11:56. doi: 10.1186/s13287-020-1570-9

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© The Author(s). 2020

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 — Effects of hAMSC-Exos on the migration of BJ cells. a Representative images of the scratch wound healing assay of cells treated with hAMSC-Exos at different time points. b Quantitative analysis of cell migration. **p < 0.01 compared to the control group, ^#p < 0.05 (n = 5). c Microscopic view of migrated cells after crystal violet staining. Scale bar = 50 μm. d Quantitative analysis of the migrated cells. **p < 0.01 compared to the control group (n = 5)