Fig. 5

MSCs enhance resolution of structural lung injury 4 h after VILI. Histograms demonstrating enhanced resolution of structural lung injury evidenced by decreased alveolar lung tissue (a) and increased alveolar airspace fraction (b) in the MSC group. Representative photomicrographs of lung taken at a magnification of ×10 from a PBS control (c), and MSC-treated (d), animal demonstrate greater resolution of lung injury with MSCs at 4 h. The scale bar at the bottom right of each figure represents 200 μm