Statistical analysis of cell populations with different cell-cycle phases among iAECs, iVECs, and iVECs-RA. Data are presented as mean SEM,n= 4 biological replicates. One-way ANOVA followed by Bonferroni’s post test for multiple comparisons was used. The level of significance was labeled as ns,∗,∗∗, and∗∗∗, denoting non-significant andpvalue of <0.05, <0.01, <0.001. iAECs, induced arterial endothelial cells; iVECs, induced venous endothelial cells; iMCs, induced mural cells; ECs, endothelial cells; RA, retinoic acid. See alsoFigure S1.