361906.fig.004a
(a)
361906.fig.004b
(b)
Figure 4: Real-time PCR analysis of the expression of osteogenesis-related genes in BMSCs cultured on surfaces modified with different chemical functional groups. (a) CBFA-1; (b) ALP. versus the respective –CH3-modified substrate at 7 d; versus the respective –CH3-modified substrate at 10 d; versus the respective –CH3-modified substrate at 14 d.