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. 2019 Oct 17;17:108. doi: 10.1186/s12951-019-0543-6

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© The Author(s) 2019

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 — CLSM images of MEFs exposed to bare Qdots (a) and LLO-Qdots (b). Lysosomes visualized with LysoTracker^® Green dye fluorescence at 511 nm (green) and QDot fluorescence at 655 nm (red). Images are presented in false color [48], where the LysoTracker^® Green dye is shown in magenta and red Qdots are displayed in yellow when residing in the cytoplasm, or white inside the lysosomal system when colocalized with the magenta LysoTracker^® Green dye