Figure 6.
Midpoint of activation (V50) of mHCN2 and its responsiveness to β-adrenergic receptor agonist - isoproterenol (ISO, 1μM). Cells were pre-treated with 5 μM BAPTA-AM for 8 minutes; ISO perfusion was started 1 minute before recording. Two Way ANOVA was used for group comparison where ISO midpoint values were compared in relation to the presence/absence of BAPTA in AC1 or AC6 groups. *p<0.05 versus corresponding no ISO; n=5–9.