FIG. 5.

Morphology of the HDMEC cultured on the surface of the PC constructs that contained HFF (left panel) or HOS (right panel) after 3 weeks in culture. HDMEC cultured on the PC collagen constructs in which HFF or HOS included during gelation and compression exhibited proangiogenic behavior as visualized by expression of the endothelial cell marker PECAM-1 (A, B). SEM images showed three-dimensional microcapillary-like structures on the surface of the constructs (C, D). Double arrow indicates PC collagen scaffold. White arrows indicate microcapillary-like structures.