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. 2017 Jul 11;21:14. doi: 10.1186/s40824-017-0100-z

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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. 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. 3 — SEM images of the crosslinked gelatin fibrous sheet (a) and e-beam-irradiated gelatin sheets with applied doses of 100 (b), 200 (c), 300 (d), 400 (e), 500 (f), and 600 kGy (g). All nanofibers were crosslinked by glutaraldehyde vapor before e-beam irradiation. Scale bars are 10 μm