TGFB1 and pulmonary fibrosis: However, the lung tissue relative mRNA expression of the chloride (cystic fibrosis transmembrane conductance regulator) and sodium (Scnnγ, Scnnβ) channels were significantly decreased in TGFβ1 TG mice with lung fibrosis compared to WT and TGFβ1 TG mice without lung fibrosis (Supplementary Table 2).