title: Concentrations and activity coefficients of Na+, K+ and Cl- in Aplysia californica enterocytes.
abstract: Tissue water averaged 76% of tissue weight in epithelial sheets of Aplysia californica intestine. Extracellular water averaged 19.6% of total intestinal water. Intracellular Cl- concentrations averaged 110 mM with most of Cl- being bound or sequestered. Intracellular Na+ concentrations were 34.2 mM with approximately 30% bound or sequestered. Intracellular K+ concentrations were not bound and averaged 532 mM. Valinomycin lowered intracellular K+ concentrations dramatically.
mesh_terms: D000818:Animals; D001048:Aplysia / Q000378:metabolism*; D001692:Biological Transport; D001834:Body Water / Q000378:metabolism; D002712:Chlorides / Q000378:metabolism*; D004848:Epithelium / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism*; D007422:Intestines / Q000187:drug effects; D007424:Intracellular Fluid / Q000378:metabolism; D011188:Potassium / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*; D014634:Valinomycin / Q000494:pharmacology; D014714:Vertebrates / Q000378:metabolism
chemical_list: D002712:Chlorides; D014634:Valinomycin; D012964:Sodium; D011188:Potassium