Fig. (2) Suppression of the TNFα-induced NF-KB response by AgNPs in NCI-H292 cells. Cells were transfected with NF-KB promoter-reporter plasmid, and then the transfected cells were exposed to 20 ng/ml of TNFα and AgNPs 10 and 100 µg/ml of AgNPs separately and together for 8 h. The results are figured as means ± SD, n ≥ 3, for each group; ## and ** P < 0.01. #, significant difference compared to the control group. **, significant difference compared to the TNFα-exposed group.