Biphasic Osteogenic Characteristics of Human Mesenchymal Stem Cells Cultured on Nanotubes of Different Diameters
Figure 4
MTT assay for cell viability and proliferation showing the optical density of the reaction product of the MTT working solution with human mesenchymal stem cells cultured on nanotubular surface as a function of incubation time. x The data of control group (Ti) was significantly higher than that of experimental (TiO2 nanotubes) group .