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. 2017 Jan 31;15:10. doi: 10.1186/s12951-017-0247-8

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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. 7 — SEM analysis showing BCAEC morphology after 4 h of cell culture. a Endothelial cells adhered on the NT surface representing a well-defined cell body; b Ti6Al4V control surface illustrating a poorer filopodia formation; c higher magnification denoting the configuration of a thicker filopodia anchored to the NTs; and d high magnification of Ti6Al4V surface indicating a translucent and impaired filopodia