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. 2017 Mar 1;15:17. doi: 10.1186/s12951-017-0250-0

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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. 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. 6 — Confocal images of SiNW-NH₂ after incubation with HeLa cells. Top (a) and orthogonal (b) views of the fluorescence images. The white arrow highlights the wire. The black arrows indicate the position where the orthogonal view was taken. Scale bar is 10 µm