Figure 9. Fluorescent microscopic images of cell nuclei (A-C) and cytoskeleton (A1-C1) on the surface of A-SA-Gel hydrogel scaffold after culturing 4 days; (A2-C2) the merge images of cell nuclei and cytoskeleton; (D-F) the SEM micrographs of cells attachment on the surface of A-SA-Gel hydrogel scaffold after culturing 4 days; (F) CCK-8 assay data analysis after culturing 1, 3, and 5 days. The error bars represent the standard deviation(n=6) and the value of *p ≤ 0.05 was considered statistically significant.