Figure 6: Effect of hWJMSCs on NF-κB expression in the ARDS rat model. (A) Histopathology of the lung tissues. NF-κB positive cells are distinguishable by their brown cytoplasmic staining (red arrows) and hematoxylin counterstain (blue) (scale bar: 50 μm and 40× magnification); (B) Bar graphs show NF-κB expression. Data are presented as mean±SD of pentaplicates and analyzed by one-way analysis of variance followed by Tukey HSD post hoc test. Different letters show a significant difference, P<0.05. I : negative control; II : positive control (LPS-induced rat); III : LPS+hWJMSCs 5×104 cells/kg BW; IV : LPS+hWJMSCs 5×105 cells/kg BW; and V : LPS+hWJMSCs 5×106 cells/kg BW.