Fig. 2

(a) IgE (IHC, left panel) and mast cell (Toluidine blue stain, right panel) expression in nasal tissues of control and study subjects. Scale bar = 50 μm. The quantification of (b) IgE-positive cells and (c) mast cells was performed with Image-Pro Plus 6.0. Red arrow: toluidine blue staining. *p < 0.05; **p < 0.01. IgE: immunoglobulin E