FIG. 5.

(a) MTT assay result after 1, 3, and 7 days of scaffold culture (S-1, S-2, and S-3). *p<0.05 and NS indicate a significant difference and nonsignificance, respectively. Fluorescence surface and cross-sectional images for the (b) S-1, (c) S-2, and (d) S-3 scaffolds after 30 days in culture. In this image, nucleus (blue) and F-actin (red). (e) Cell density for three regions (top, middle, and bottom) of the scaffolds. *p<0.05 indicates a significant difference. In the surface and crosssectional images, the scale bar means 500 μm. The scale bar in the magnified image is 30 μm. Color images available online at www.liebertpub.com/tec