Figure 4

ALP (a) and Runx2 (b) gene expression. Gene expression is shown for monocultures and cocultures on TCPs and PA-RGDS at days 7, 14, and 21, as expressed as fold ratios relative to gene expression of hMSC monocultures on TCPs at day 7. Data, provided as mean ± standard deviation, are normalized to GAPDH gene expression (**p < 0.05 and ***p < 0.005).