Figure 4From: Investigating the immunomodulatory nature of zinc oxide nanoparticles at sub-cytotoxic levels in vitro and after intranasal instillation in vivo Immunoblotting showing (A) phosphorylation of p38 protein, belonging to the redox-sensitive p38 Mitogen activated protein kinase (MAPK) pathway and (B) p65 protein, involved in NFκB activation, after exposing A549 cells to 20 μg/mL dose of ZnO NPs. Back to article page