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. 2017 Aug 28;14(6):763–774. doi: 10.1007/s13770-017-0071-0

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© The Author(s) 2017

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.

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Fig. 3 — Colony-forming unit-fibroblast (CFU-F) and cumulative population doubling (PD). A CFU-F was determined after two weeks of culturing with a starting density of 50 cells per well. Total n = 9 with 3 replicates of each cell type/donor. No significant difference was detected between the groups. B Cumulative population doublings were calculated over 5 weeks of culture. No significant differences were detected between the various types of MSC at each week (1–5)