Figure 2.

Cytokine expression. (A) Western blotting results representing expression of TGF-β1, TNF-α and NF-κB in rat pulmonary tissue from the negative control, model and ulinastatin treatment groups. GAPDH was used as a reference to evaluate relative expression of TGF-β1, TNF-α and NF-κB. (B) Quantitative comparison of TGF-β1, TNF-α and NF-κB expression in different groups at different time points. Data are presented as the mean ± standard deviation. *P<0.05. NC, negative control; UTI, ulinastatin; TGF-β1, transforming growth factor-β1; NF-κB, nuclear factor-κB; TNF-α, tumor necrosis factor-α.