[Significance of determination of intracellular ion activity].
D000818:Animals; D001826:Body Fluids / Q000378:metabolism*; D002463:Cell Membrane Permeability; D004487:Edema / Q000378:metabolism; D005110:Extracellular Space / Q000378:metabolism; D006168:Guinea Pigs; D007424:Intracellular Fluid / Q000378:metabolism*; D009997:Osmotic Pressure; D012964:Sodium / Q000378:metabolism*; D014882:Water-Electrolyte Balance
D012964:Sodium