Fig. 7From: Human amnion-derived mesenchymal stem cells alleviate lung injury induced by white smoke inhalation in ratsLung fibrosis was measured at 14, 21, and 28 days after treatment by Masson trichrome staining. The degree of lung fibrosis is presented as the mean ± SD. The degree of lung fibrosis in the normal rat is 0. ###P < 0.001, vs. model group; &&&P < 0.001, phosphate-buffered saline (PBS) group. hAMSC, human amnion-derived mesenchymal stem cellBack to article page