Angiogenic Effects of Collagen/Mesoporous Nanoparticle Composite Scaffold Delivering VEGF₁₆₅

Figure 6

Qualitative histologic analysis of tissue samples after implantation in rat subcutaneous model for 2 weeks. H&E and MT stain showing histological images of the interface between connective tissue and scaffolds (scale bar = 300 m). Vessels are characterized by the presence of red blood cells within defined lumens lined by endothelial cells at higher magnification (ML: muscle, FC: fibrous capsule, Scaf: scaffold, red arrow: blood vessel, and scale bar = 50 m).