Sodium-calcium exchange in the heart.
D000818:Animals; D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D006801:Humans; D008564:Membrane Potentials; D009200:Myocardial Contraction; D009206:Myocardium / Q000378:metabolism*; D012508:Sarcolemma / Q000378:metabolism; D012964:Sodium / Q000378:metabolism*
D012964:Sodium; D002118:Calcium