Fig. 6.
Effect of cytochalasin D on UTP-induced depolarization and constriction. A: representative trace showing the effects of increasing concentration of cytochalasin D on an artery preconstricted with UTP. B: summary data of the concentration-dependent effect of cytochalasin D on a preconstricted artery (n = 6). C: representative recordings of smooth muscle Em measured under control conditions and in the presence of UTP ± cytochalasin D (1 × 10−5 M). D: summary data of Em measured under control conditions and in the presence of UTP ± cytochalasin D (n = 6). Asterisks denote statistical differences from control (*) and UTP (**).