Fig. 5

a) Photomicrographs showing nasal epithelial cells immunostained for identification of p65+ cells. Nuclei are stained in purple/blue, p65 is stained in brown. The immunocytochemical images in the left panel are representative of those from 12 control normal subjects (NS) (A), 12 patients with persistent untreated nonallergic rhinitis (NAR) patients (b) and 12 patients with persistent NAR patients under regular treatment with nasal glucocorticoids (NAR + GC) (c). The images d, e and f are the negative controls (nonspecific rabbit IgG). Original magnification: x400. Bar = 50 μm. The percentage of cytosolic only p65+ nasal epithelial cells (g) and nuclear p65+ nasal epithelial cells (h) over total nasal epithelial cells is not significantly different between persistent untreated NAR patients, NS and NAR + GC