Evaluation of Tissue Behavior on Three-dimensional Collagen Scaffold Coated with Carbon Nanotubes and β-tricalcium Phosphate Nanoparticles

123 INTRODUCTION A tissue engineering strategy requires three biological elements: cells, molecules and scaffolds. It was reported that the surface nanostructure of a scaffold plays a major role in upregulating cell proliferation and differentiation after implantation into the body. The nanostructured surface obviously increases the surface area and roughness of the scaffold to promote subsequent molecular adsorption and cellular Evaluation of Tissue Behavior on Three-dimensional Collagen Scaffold Coated with Carbon Nanotubes and β-tricalcium Phosphate Nanoparticles