Fig. 6

The effect of mMSCs overexpressing p130 or E2F4 on lung fibrosis in ARDS mice. a Lung fibrosis was evaluated by Masson’s trichrome staining at 14 days after LPS exposure (× 200). A blue signal indicated positive staining for collagen, and a red signal represented muscle fibrosis and cellulose. b The quantification of lung fibrosis is shown as an Ashcroft score (n = 10, *p < 0.05 compared with the control group; #p < 0.05 compared with the ARDS group; δp < 0.05 compared with the LPS+MSC-NC group)