Hypoxic preconditioned mesenchymal stem cell-derived exosomes alleviate oxidative stress-induced cardiomyocyte apoptosis through miR-486-5p

Figure 2 Hypoxic preconditioning promoted the internalization of human umbilical cord-derived mesenchymal stem cells exosomes. A: Uptake of the red fluorescence dye PKH26-labeled normoxic exosomes and hypoxia-preconditioned mesenchymal stem cell-derived exosomes (Hypo-Exosome) into H9C2 cells; B: Statistical evaluation of fluorescence intensities. Data are presented as the mean ± standard error of the man (n = 3). ^cP < 0.001, ^dP < 0.0001.