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The effects of metabolic inhibition on K+ background currents and action potential duration were investigated in neonatal rat ventricle cells during early development. Action potentials and ionic currents were measured with the patch clamp technique in current and voltage clamp mode in cells isolated with collagenase from 1 day and 7 day old rats. During(More)
In the perfused rabbit heart,the upstroke of the transmembrane action potential of fibers of the atrioventricular (AV) node presents two distinct components. The first depends strongly on extracellular sdoium concentration, but the degree to which it is activated is influenced by extracellular calcium, as indicated by the correlation between its Vmax and(More)
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