In Western blotting, expression of G and M2-1 proteins after infection with RSV was inhibited from 1 μg/ml MG132, and upregulation of phospho-NF-κB, claudin-4 and occludin after infection with RSV was increased at 10 μg/ml MG132 (Figure 8A). The gene discussed is NFKB1; the disease is infection.