Fig. 1

a Effect of BV and vildagliptin treatment on plasma glucose level. b Effect of BV and vildagliptin treatment on insulin level. One asterisk denotes significant differences in insulin level between BV low dose and vildagliptin groups versus diabetic group. Two asterisks denote significant differences in glucose level between vildagliptin and BV low and BV high doses compared to the diabetic group. Three asterisks denote significant differences in insulin and glucose levels between diabetic and control groups, using one way ANOVA statistical analysis test