Helman, S I Edge damage effect on measurements of urea and sodium flux in frog skin. [electronic resource] - The American journal of physiology May 1974 - 1198-203 p. digital Publication Type: Journal Article ISSN: 0002-9513 Standard No.: 10.1152/ajplegacy.1974.226.5.1198 doi Subjects--Topical Terms: AnimalsAnuraCarbon RadioisotopesIn Vitro TechniquesPermeabilityRadioisotopesRana pipiensSkin--metabolismSkin AbsorptionSodium--metabolismSodium IsotopesTritiumUrea--metabolismVasopressins--pharmacologyWater--metabolism