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. 2020 Apr 16;10:6494. doi: 10.1038/s41598-020-62920-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Confocal microscopy analysis of EVs stained with PKH67 and PKH26. Maximum intensity projections of CRL-2868 cells incubated with 20 μg/ml of CRL-5908 EVs dyed with PKH67 (a) and PKH26 (b) after 9 hours of incubation. We acquired grayscale images that were artificially colourized, using pseudo-colours, being both dyes showed in red.