title: Measurements of extracellular and of interstitial cation activity (pK, pNa, pCa) with ion-selective electrodes.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D003238:Connective Tissue / Q000378:metabolism*; D005110:Extracellular Space / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008839:Microelectrodes; D011188:Potassium / Q000378:metabolism*; D051381:Rats; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium; D011188:Potassium; D002118:Calcium