Figure 2: Effect of various doses of hWJMSCs on the level and inhibitory activity of serum IL-18 in the ARDS rat model. (A-B) IL-18 level was determined by ELISA and total protein assay, respectively. (C) The inhibitory rate of IL-18 was calculated. 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.