Gold Nanoparticles Promote Proliferation of Human Periodontal Ligament Stem Cells and Have Limited Effects on Cells Differentiation

Figure 5

ALP activity assay results of cells treated with 60 nm AuNPs at 56 μM concentrations for 4, 7, and 10 days. Results are mean SD of the triplicate experiments; . The ALP activity of the treated groups was slightly increased relative to the untreated control group. Both experiment group and control group significantly are higher than blank group (cell cultured with α-MEM medium and not treated with AuNPs).