Fig. 2From: Retinoic acid promotes the endogenous repair of lung stem/progenitor cells in combined with simvastatin after acute lung injury: a stereological analysisEffect of retinoic acid (RA) and simvastatin (SS) compound on the numerical density and surface density of alveolar cells and alveolar liner intercept (Lm) for acute respiratory distress syndrome (ARDS) in rats. a representative photos for analysis of alveolar cell numerical density. b representative photos for analysis of alveolar cell surface density and Lm. c, d and e statistical results for the numerical density and surface density of alveolar cells and alveolar Lm. * P < 0.05, ** P < 0.01 vs. the control group; # P < 0.05, # # P < 0.01 vs. the ARDS groupBack to article page