Fig. 2. Expression of neurokinin-1 receptor (NK-1R) in normal and alopecia areata (AA) scalp (n=3; scale bar: A, 200 µm; B 100 µm). (A) Paraffin-embedded normal scalp skin and AA lesions are immunohistochemically stained with anti-NK-1R. Examination of NK-1R expression in the interfollicular epidermis. (B) Paraffin-embedded normal scalp skin and AA lesions are immunohistochemically stained with anti-NK-1R. Examination of NK-1R expression in the hair follicles. (C) Quantification of the relative staining area. ^*Statistically significant (p<0.05).