Angiogenic Effects of Collagen/Mesoporous Nanoparticle Composite Scaffold Delivering VEGF₁₆₅

Figure 2

Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of the composite scaffolds. Cross-sectional SEM image of the scaffold (bar = 100 μm) (a). Higher magnification SEM image of MSN-distributed collagen (bar = 1 μm) (b). TEM image of MSN (bar = 10 nm) (c).