Figure 5

RT² Profiler PCR Array of osteogenesis after 5 days. (a): Histogram showing the mean cycle threshold distribution for MSC group at 5 days. Low CT values (< 25) represent genes at high transcript copy number. CT values of greater than 35 were considered to be outside the detection threshold of the system. (b): Fold changes of genes by co-culturing group compared with MSC group. MSC group was used as reference group and set as 1. Results were reported as fold changes ± fold-difference (2^-ΔΔCt ± 2^{-(ΔΔCt ± SD)}). * P < 0.05.