We would like to replace image of Fig. 4A with new image, for previous image causes some controversy. New images are as follows.
Fig. 4. (A) Histological analysis indicated LPS injection caused capillary vessel engorgement, congestion, abundant inflammatory infiltration in lung stroma (×100). Administration of MSCs or MSCs-Ang1 improved the lung injury at all time points. (B) Lung injury score decreased significantly in the MSCs group and MSCs-Ang1 group at 6 hours, 24 hours, 48 hours, 8 days, and 15 days after LPS injection. (*p<0.05 compared with LPS controls; †p<0.05 comparing MSCs-Ang1 with MSCs). Fibroblast injections have no effect on improvement of both pathological morphology and lung injury score. NS, normal saline; LPS, lipopolysaccharide; MSCs, mesenchymal stem cells.