Measurement of the sodium membrane potential by NMR.
Using nuclear magnetic resonance (NMR), we have developed a method of noninvasively determining the transmembrane sodium potential in erythrocytes by measuring intracellular and extracellular sodium concentrations. The experimental values correlated well with values obtained from standard flame photometric methods.
D004910:Erythrocyte Membrane / Q000502:physiology; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008564:Membrane Potentials; D012964:Sodium / Q000097:blood*
D012964:Sodium