Numbers of tryptase positive cells (A) and FcεRIα positive cells (B) in the inferior turbinate group (Inf Turb) (n = 8) and the nasal polyp group (NP) (n = 8), expressed as 10 scored fields (×400). The mRNA expression of FcεRIα in the inferior turbinate group and the nasal polyp group (C). The box-and-whisker plot represents the median, the lower to upper quartile, and the minimum to the maximum value, excluding outside and far out values, which are displayed as separate points. Statistical analyses were performed by using the Mann-Whitney U test. NS = Not Significant.