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Effects of PMSC-EV treated surface on angiogenic and apoptotic activity of HUVECs. (A) KDR and TIE2 expression of HUVECs cultured on untreated surface, LLP2A treated surface or PMSC-EV treated surface. (B) Caspase 3 activity of HUVECs cultured on untreated surface, LLP2A treated surface or PMSC-EV treated surface. Data are expressed as mean ± standard deviation: *p < 0.05, **p < 0.01 (n = 4).
