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. 2018 Nov 30;15:334. doi: 10.1186/s12974-018-1368-1

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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 — Biocompatibility and intracellular distribution of PS-MBs. a Cell viability of HUVEC and RAW264.7 cells under different concentration of PS-MBs using CCK-8 assay. b Fluorescence examination of the intracellular distribution of MBs with or without PS-labeled Cou6 at a concentration of 1 × 10⁸/ml (scale bar 30 μm). c Quantitative analysis of fluorescence intensity of internalization MB-labeled Cou6 with or without PS in RAW264.7 cells by Image J. (*P < 0.05 versus control)