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Fig. 2. Comparison of voltage-dependent properties of INa
between atrial and ventricular myocytes of the rainbow trout heart.
Current-voltage relationships and steady-state activation
m
and inactivation curves
h
of the INa are shown in A and
B, respectively. Voltage protocols (top), representative recordings (middle)
and mean results (± s.e.m.; N=12-14) (bottom) are shown.
Asterisks show a significant difference (P<0.05) between atrial
and ventricular myocytes.