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Wound healing assay. (a) Images of U87 cells, both untreated and treated with NTERA2 large extracellular vesicles (lEVs) were taken at 0, 6, and 20 h after wound. The open area surrounded by a yellow line is the one calculated by the ImageJ software. (b) Relative wound healing area in the different conditions. Three independent experiments were performed, each one in duplicate. Data are shown as means ± standard error of mean. * p < 0.05; *** p < 0.001.
