Scanning electron microscopy images depicting morphology of electrospun (A) PCL, (B) PCL-collagen (COL), (C) PCL-endothelial dECM (ENDO), (D) PCL-osteoblast dECM (OST) fibers. Histogram of fiber diameter distribution for (E) PCL, (F) COL, (G) ENDO, (H) OST fiber groups. Average fiber diameter (I) of PCL fibers and fibers with embedded dECM protein. Percentage of porosity (J) measured for each group in dual-layer scaffolds. ***P<0.0001. n.s. P>0.05. Scale bar 10μm.