Figure 6. Immunofluorescence staining of lung punches injected with exosomes derived from urine (B–C) or myofibroblasts or fibroblasts (E–F).

Lung punches were fixed four days post injection with either PBS (panels A or D) or control urine-derived exosomes (panel B), U-IPFexo (panel C), control fibroblast (panel E) or MF-IPF exosomes (panel F). Shown are representative merged photographs at 20 x, surfactant protein C (SPC, red), αSMC actin (green) and DAPI (blue). n=3 individual exosome preparations/group. Scale bar 50 µm.