Na +  pool and Na +  concentration in epidermis of frog skin.
D000818:Animals; D001001:Anura; D004848:Epithelium / Q000032:analysis / Q000378:metabolism; D005110:Extracellular Space / Q000032:analysis / Q000378:metabolism; D066298:In Vitro Techniques; D007700:Kinetics; D008433:Mathematics; D008564:Membrane Potentials; D008854:Microscopy, Electron; D008954:Models, Biological; D010539:Permeability; D011894:Rana pipiens; D012867:Skin / Q000378:metabolism*; D012879:Skin Physiological Phenomena; D012964:Sodium / Q000032:analysis / Q000378:metabolism*
D012964:Sodium