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. 2016 Jan 8;14:1. doi: 10.1186/s12951-015-0156-7

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© Sulheim et al. 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. 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. 2 — a Colocalization (white arrows) of PBCA NPs (red) with early endosomes), b late endosomes and c lysosomes (all in green) in RBE4 cells. d Colocalization of POCA NPs and lysosomes in PC3 cells. Both colors in the same pixel are seen as yellow. Cells were incubated with NPs for 3 h after labeling the endocytic compartments