Sodium uptake by the outside surface of frog skin.
D000818:Animals; D001001:Anura; D002247:Carbon Isotopes; D005110:Extracellular Space; D007444:Inulin / Q000378:metabolism; D008353:Mannitol / Q000378:metabolism; D012867:Skin / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*; D013395:Sucrose / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
D002247:Carbon Isotopes; D014316:Tritium; D008353:Mannitol; D013395:Sucrose; D007444:Inulin; D012964:Sodium