TGFB1 and idiopathic pulmonary fibrosis: (A) Dot plots with median showing the mRNA expression of ACTA2 relative to the siControl +TGF-β1 condition (red dashed line), in control (circle, n=6) and IPF (square, n=9) lung fibroblasts treated with TGF-β1 and PRRX1 siRNA (#1 or #2).