Fig. 5From: Comparative study of hyperpolarization-activated currents in pulmonary vein cardiomyocytes isolated from rat, guinea pig, and rabbitVoltage-dependent kinetics of the Ih. A The steady-state activation curves constructed from rat and guinea pig. Continuous lines are the Boltzmann fits used to determine V1/2 and slope factors. B Time constants obtained by fitting raw data with a double exponential function in rat, and with one exponential function in guinea pigBack to article page