Research Article

In Vitro Uptake of Hydroxyapatite Nanoparticles and Their Effect on Osteogenic Differentiation of Human Mesenchymal Stem Cells

Figure 7

mRNA expression levels of ALP, OPN, Runx2, and OCN on day 14 after osteogenic induction. The cells were incubated with 0 and 10 μg/ml HA NPs for 24 h. Values are expressed as mean ± SD ( for each sample). , compared to the control group (hMSCs without HA NP treatment). , comparison between S50 group, S100 group, and S150 group.