mRNA expression of human mesenchymal stem cell incubated in osteogenic media.

<p>Cells were incubated with different PMMA bone cements for (A) 24 hours and (B) 21 days. Results were compared to the control without testing material. Data are presented as the boxplot of five individual experiments (*p≤0.05, **p≤0.01, **p≤0.001 vs. control w/o testing material).