Fig. 4
Comparison of the Ih in PV cardiomyocytes from rat, guinea pig, and rabbit. A The amplitude of the Ih in rat (left), guinea pig (middle), and rabbit (right) PV cardiomyocytes was measured at − 140 mV in the control and in the presence of either 5 mM Cs+ or 1 mM Cd2+. B The current amplitudes were measured at the beginning and near the end of the test pulse of PV cardiomyocytes in rat (left), guinea pig (middle), and rabbit (right)