Fig. 1.

Interleukin 33 (IL-33) in squamous cell carcinoma (SCC). (a) Representative micrographs (scale bar = 200 μm) of three patients with SCC, including haematoxylin and eosin staining (first line) and immunohistochemical staining for IL-33 (second line). (b) The graph represents the mean ± standard deviation (SD) of the percentage of IL-33⁺ peritumoural cells. (c) The graph represents the mean ± SD of the number of IL-33⁺ epithelial cells. (d) Relative expression of ST2 and IL33 determined by quantitative polymerase chain reaction (mean ± standard error of the mean, n = 3) in SCC cell lines