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. 2021 May 20;7:119. doi: 10.1038/s41420-021-00492-2

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© The Author(s) 2021

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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Fig. 4 — A Morphology of PMA-induced macrophages; B identification of macrophages by flow cytometry; C identification of exosomes under a TEM; D western blot measured CD63, CD81, and TSG101 levels; E NTA measured size and concentration of exosomes; F FITC and DIL staining assessed the activity of exosomes entering cells; G, H RT-qPCR measured miR-503-3p expression in macrophages (G) and exosomes (H); repetitions = 3; **P < 0.01; ***P < 0.001; the measurement data were expressed as mean ± standard deviation and compared using Student’s t test.