Figure 10. Acetylcholine-induced relaxation of aortic rings obtained from control and STZ mice, non-treated and treated with intact EPC or with EPC preincubated with cytochalasin B (CytoB). Cumulative dose-response curves of acetylcholine-induced vasorelaxation in phenylephrine preconstricted aortic rings. Significant improvement in acetylcholine-induced vasorelaxation was documented for intact EPC, followed by CytoB preincubated EPC and STZ alone. Asterisks p< 0.05