Figure 4.

(A) Confocal microscope images of L929 cells cultured for 8 days on PU film and scaffolds. The arrows in the pictures are the oriented canal direction. (B) Combined image of optically sectioned confocal microscope images of scaffolds (random 14%, PU10 and PU14). (C) Confocal microscope images of L929 cells cultured for 8 days on the random porous scaffold and the aligned porous scaffold of PU14. Nuclei of cells were stained with dapi, blue; F-actin of cells were stained with rhodamine, red