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. 2016 Oct 10;11:451. doi: 10.1186/s11671-016-1676-2

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© The Author(s). 2016

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. 10 — Flow cytometry of U251 cells containing NPs. a Control group; Fe₃O₄@SiO₂-Amino NPs, b in the absence of magnetic field, and c under magnetic explosion for 2 h; Fe₃O₄@SiO₂-Tat NPs, d in the absence of magnetic field and e under magnetic explosion for 2 h. Higher intensity along the x axis indicates more FACS delivery, and percentage of cells with internalized NPs is indicated