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. 2017 Aug 25;24(1):1179–1190. doi: 10.1080/10717544.2017.1365394

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© 2017 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — Cellular studies. (A) The fluorescence images of A549 cells treated with various formulations observed by the fluorescence-inverted microscope. The scale bar is 50 μm. (B) Quantitation of intracellular green fluorescence intensity measured using the flow cytometry. **p < .01 versus FITC; ##p < .01 versus FITC/EC-MEs. All the data are presented as mean ± SD (n = 3). (C,D) Mechanism of cellular uptake. The relative uptake efficiency of (C) ECG-MEs and (D) EC-MEs after pretreating A549 cells with different endocytosis inhibitors. **p < .01 versus control. All the data are presented as mean ± SD (n = 4).