Protein samples were extracted from mouse lungs for Western blot analysis as previously described.21 (link) The rabbit monoclonal antibodies of p-Stat3 (Tyr705; Cell Signaling Technology; 1:1000 dilution), p-Stat5 (Tyr694; Cell Signaling Technology; 1:1000 dilution), SOCS1 (Cell Signaling Technology; 1:1000 dilution), and GAPDH (Cell Signaling Technology; 1:1000 dilution) were used as the primary antibodies. HRP-conjugated anti-rabbit IgG (AB Clonal, Wuhan, China) was used as the second antibody. The chemiluminescent detection and image analysis were carried out as previously described.21 (link)