A) Western blots. Optical densities (OD) of protein bands of p22phox, Nox1, Nox2, Nox4, p47phox, p67phox, p40phox and Rac1/2 were quantified and normalized to the levels of α-tubulin (loading control) detected in the same samples. (B) Flow cytometry for the binding of Nox2 antibody (7D5). *p<0.05 for indicated values versus to vector values. †p<0.05 for indicated values versus WT values. (C) Left panel: p22phox was immunoprecipited (IP) followed by immunoblotting (IB) of Nox1, Nox2 and Nox4. Right panels: Optical densities (OD) of protein bands were quantified and normalized to the levels of total p22phox detected in the same samples. *p<0.05 for indicated values versus vehicle values under the same gene transfection. †P<0.05 for indicated values versus WT TNFα values. n=4 independent experiments.