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Figure 9 | BMC Cardiovascular Disorders

Figure 9

From: The in vivo performance of small-caliber nanofibrous polyurethane vascular grafts

Figure 9

Neointima on grafts harvested 24 weeks after the surgery (× 400). White arrows indicate endothelial cells, black arrows vascular grafts, and red arrows smooth muscle cells. (A) A PU graft stained for von Willebrand factor (vWF) showing continuous endothelial layer. (B) A PTFE graft stained for vWF showing continuous endothelial layer. (C) A PU graft stained for α-SM-actin showing an orderly arrangement of smooth muscle cells without further increase of neointimal thickness. (D) A PTFE graft stained for α-SM-actin showing disordered arrangement of smooth muscle cells and increased neointima thickness.

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