Effect of glycyrrhizic acid and 18β-glycyrrhetinic acid on the differentiation of human umbilical cord-mesenchymal stem cells into hepatocytes

Figure 3 Cytotoxicity analysis of human umbilical cord-mesenchymal stem cells by MTT Assay. Bar graphs showing percent viability of human umbilical cord-mesenchymal stem cells treated with A: glycyrrhizic acid (GA), B: 18β-glycyrrhetinic acid (GT), and C: their combination (GA + GT) at different concentrations. A decrease in percent (%) cell viability is observed with increasing concentrations of GA, GT and their combination. Statistical analysis was conducted by One-way ANOVA and Post-Hoc Bonferroni tests. Results are expressed as mean ± SEM (n = 3); level of significance ^aP ≤ 0.05 (where ^aP ≤ 0.05, ^bP ≤ 0.01, and ^cP ≤ 0.001).