Research Article

Combined Effects of Surface Morphology and Mechanical Straining Magnitudes on the Differentiation of Mesenchymal Stem Cells without Using Biochemical Reagents

Figure 4

Staining of ALP and α-SMA. The expressions of ALP and α-SMA in MSCs on day 5 ((a)–(f)) and day 8 ((g)–(l)) are presented in (A) and (B), respectively. The expression of ALP was substantial on day 5 when 3% of straining was imposed on the flat surface ((A)(b)). The expression of α-SMA on the microgrooved surface was enhanced more than on the flat surface. In particular, the highest expression of α-SMA was observed when MSCs were under 10% strain on the microgrooved surface. (All photographs were taken at same magnification level; scale bar = 100 μm).
860652.fig.004