Fig. 1

EPCs reduced OGD-induced EC apoptosis and enhanced its function. a FACS was used to detect apoptosis of ECs. b Representative images of ECs with crystal violet staining and quantitative analysis of the ECs number passed through the polycarbonate membrane. c Representative images show the tubes formed by ECs and the number of tubes was quantitatively analyzed. Scale bar = 200 μm in b and c. Comparing the mean ± SD (n = 6, triplicates per group), *P < 0.05, **P < 0.01, ***P < 0.001 vs. Ctrl group; ^#P < 0.05, ^###P < 0.001 vs. OGD group. Data were analyzed using Student’s t test