Real-time TaqMan PCR in tissue cultures of primary normal, Th1-type, and Th2-type fibroblast lines. Numbers in parentheses indicate fold increases in IL-13Rα2 gene expression in normal, Th1-type, and Th2-type fibroblasts with or without cytokine treatment above IL-13Rα2 gene expression in untreated normal fibroblasts. IFN-γ or IL-13 treatments had little effect on the gene expression of IL-13Rα2 in normal fibroblasts, but both cytokines markedly altered the expression of this IL-13 receptor subunit in Th1- and Th2-type fibroblasts.