Effect of BMMSC-Exos on tube formation, cell migration, and wound healing of HUVECs. A, Representative images of tube formation. Bar = 100 μm. B, Representative images of migration by crystal violet staining. Bar = 200 μm. C, Representative images of wound healing. Bar = 200 μm. D, Quantitative analysis of cumulative tube lengths. E, Quantitative analysis of migratory. F, Quantitative analysis of recovery. G, Relative cell viability was evaluated by MTT assay, Quantitative analysis of relative cell viability. Of note, FV, field of vision. n = 6 per group. *P < .05, **P < .01 and ***P < .001.