Fig.2. Lung mesenchymal TGF-β signal at late fibrotic stage, but not early inflammatory stage, contributed to lung fibrosis.
(A) Lung mesenchymal TGF-β signaling was inhibited at different stages in BLM-induced lung fibrosis by controlling Dox-induced dnTβRII expression as indicated; I-1: 7 days before BLM to day 28 after BLM, I-2: 7 days before BLM to day 7 after BLM, I-3: Day 7 to day 28 after BLM, I-4: Day 14 to day 28 after BLM. (B) Fibrotic histopathology was shown by H&E-stained lung tissue sections, with indicated genotypes and Dox induction scheme. (C) Fibrotic changes were quantitatively compared using Ashcroft scores among the lungs with dnTβRII-mediated inhibition at different stages after BLM injury. *P<0.05.