Fig. 4

Western blot data showing phosphorylation of ERK1/2 (pERK1/2), and MEK1/2 (pMEK1/2) in human IPF lung fibroblasts treated with various concentrations of esomeprazole (1–100 μM). Data is representative of at least three independent experiments. Beta actin (ACTB) is used as loading control. Densitometric quantification of the protein bands relative to ACTB is shown in the lower panel. *p < 0.05 vs control