The "independence principle" of biological membranes: its misuse.
D000818:Animals; D001692:Biological Transport; D002462:Cell Membrane / Q000502:physiology*; D004553:Electric Conductivity; D007474:Ion Exchange; D008433:Mathematics; D011188:Potassium; D012964:Sodium
D012964:Sodium; D011188:Potassium