The expression of Il4, Il13, Ccl11, Ccl17 and Ccl22 mRNA was increased two- to fourfold (Fig. 1l), whereas the expression of Tslp mRNA was not changed (Fig. 1l), in the skin lesions of Ddx5∆KC mice compared with Ddx5fl/fl mice at day 16 post-MC903 administration. This evidence concerns the gene TSLP and neoplasm.