Figure 7.

Influence of Ag-NP/Ag⁺ ions on the osteogenic differentiation of hMSCs after 21 d of incubation. Quantitative analyses of mineralization were performed by measuring the optical density (570 nm) of extracted alizarin red S. The data are expressed as the mean ± SD (n = 3 independent experiments), given as the percentage of cells cultured under osteogenic conditions in the absence of silver. The asterisks (*) indicate significant differences with respect to to the control (*p < 0.05; **p < 0.005).