Figure 1From: Silver and Gold Nanoparticles Alter Cathepsin Activity In vitroBiocompatibility of Ag-NPs in Vero cells. Cytotoxic levels were determined for uncoated and polysaccharide-coated 10 and 25-nm Ag-NPs, following a 24-h exposure using a standard MTS cell viability assay. The cell viability in the treatment groups is expressed as percent control and plotted as the mean +/- standard error of the mean (SEM). (n = 8).Back to article page