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Cell cycle (G1 phase) arrest in U87-Selu exo as measured using flow cytometry. The harvested cells were subjected to PI staining and used for cell cycle analysis. (a) Cell cycle of each group; control, exo, Selu, and U87-Selu exo. (b) Number of cells in each phase. * p < 0.05 vs. non-treated control, n = 3.
