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. 2015 Jul 10;13:47. doi: 10.1186/s12951-015-0107-3

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© Guo et al. 2015

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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Mean fluorescence intensity of cells treated with coumarin-6 (C6)-labeled NLCs or C6-labeled SLNs. Cells were treated for 15, 60, and 120 min and then measured using flow cytometry. a HaCaT and b CCC-ESF cells (n = 3).