Mice received oropharyngeal A–D) bleomycin or F–H) saline on day 0. Mice were maintained on A and F) low, B and G) regular, or C and H) high NaCl diets for 21 days. Lung sections were stained for CD45 (red) and collagen-VI (green) to detect fibrocytes (orange). Nuclei were counterstained with DAPI (blue). D) Sections were stained with control antibodies. Bar is 100 μm. Images are representative of three independent experiments. E) Quantification of fibrocytes. Values are mean ± SEM, n = 3–4 mice per group. *p < 0.05, (1-way ANOVA, Tukey’s test).