Figure 1.
IL17A mRNA expression by RISH in acral and nonacral samples. (a–c) IL17A composite expression in the entire tissue specimen (a), epidermis (b), and dermis (c) of normal acral skin (n = 9), HPE (n = 12), nonacral eczema (n = 10), PP (n = 8), nonacral psoriasis (n = 9), and MFPP (n = 8). Composite expression was normalized to tissue area in mm2. (d–f) Representative IL17A RISH (red) in PP (d), HPE (e), and normal acral (f) tissue. Middle lines represent medians; upper and lower ends of the boxes represent IQRs; whiskers represent values within 1.5 × IQR. Each point represents an individual case. Bar = 100 μm. HPE, hyperkeratotic palmoplantar eczema; IQR, interquartile range; MFPP, mycosis fungoides palmaris et plantaris; NAE, nonacral eczema; NAP, nonacral psoriasis; NL, normal acral skin; PP, palmoplantar psoriasis; RISH, RNA in situ hybridization.