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. 2018 Mar 30;16:33. doi: 10.1186/s12951-018-0354-1

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© The Author(s) 2018

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 — Representative confocal images at low magnification of a Vero cells with Au@DynPro b HEK293T cells with Au@ShortPro and c MDCK cells with Au@TransRb. Representative images showed similar NP dispersion throughout the culture and cell-to-cell transfer of Au@DynPro through short (b) or long (c) projections. d, e Representative time-lapse images of the linear progression of Au@DBP inside the cell and the resulting trajectories (circles). f Comparison with the non-linear movement obtained with control NPs Au@IntCt. Scale bar: 5 µm