Glomerular Filtration BarrierNephronsPodocytesKidney GlomerulusGlomerular Basement MembraneFicollGlomerular Filtration RateNephrotic SyndromeProteinuriaPermeabilityAlbuminuriaKidneyGlomerulosclerosis, Focal SegmentalFiltrationMembrane ProteinsPuromycin AminonucleosideNephrosisKidney DiseasesNephrosis, LipoidBlood-Brain BarrierAlbuminsKidney Tubules, DistalCapillary PermeabilityBasement MembraneFluorescein-5-isothiocyanateCapillariesDiabetic NephropathiesKidney TubulesSerum AlbuminDisease Models, AnimalGlomerulonephritisRats, Sprague-DawleyIntracellular Signaling Peptides and ProteinsProteinsChromatography, GelMicroscopy, ElectronInulinMice, KnockoutLoop of HenleKidney Tubules, ProximalCytoskeletonActinsRats, WistarKidney Tubules, CollectingMice, TransgenicCells, CulturedMice, Inbred C57BLSignal TransductionUreterPuncturesKidney CortexMolecular WeightKidney MedullaBlood-Retinal BarrierRenal CirculationSodiumBlood-Air BarrierAbsorptionAminohippuric AcidsNatriuresisKidney Function TestsTight JunctionsDiuresisKidney Concentrating AbilityNephrectomyCreatinineCommunication BarriersBlood-Testis BarrierOrganogenesis