Figure 1
A dose-dependent decline in A549 cell viability after AA AgNP treatment. The MTT assay was used to determine effect of AAAgNP on A549 cell viability. Cells were exposed to AAAgNP in the range 0-75 μg/ml for 6h, after which the formazan product was quantified spectrophotometrically. A distinct dose dependent effect was observed where AAAgNP at lower concentrations induced minimal cell death. A gradual decrease in cell viability occurred with increasing AAAgNP concentration (95% Cl = 31.96 to 57.72). An IC50 value of 43 μg/ml was obtained and used for subsequent assays.