UreaKidney MedullaKidney Tubules, CollectingPhloretinKidney Concentrating AbilityKidneyKidd Blood-Group SystemAquaporin 2Membrane Transport ProteinsKidney CortexAquaporin 6Prostaglandins EBiological TransportMethylurea CompoundsMedulla OblongataRabbitsBiological Transport, ActiveVasopressinsArachidonic AcidsBlood Urea NitrogenAquaporinsDiffusion Chambers, CultureThioureaKidney DiseasesCarrier ProteinsPermeabilitySodiumWater-Electrolyte BalanceWaterRats, Sprague-DawleyOsmolar ConcentrationSodium-Glucose Transporter 1Cell Membrane PermeabilityUrineKidney TransplantationArginine VasopressinKidney TubulesAxonal TransportMembrane GlycoproteinsIon TransportProtein TransportUrinary BladderSpecific Pathogen-Free OrganismsOocytesXenopus laevisAcute Kidney Injury