OccludinTight JunctionsZonula Occludens-1 ProteinBlood-Brain BarrierClaudin-1Membrane ProteinsClaudinsZonula Occludens-2 ProteinClaudin-5Tight Junction ProteinsPermeabilityBlood-Retinal BarrierElectric ImpedanceBlood-Testis BarrierCaco-2 CellsPhosphoproteinsCell Membrane PermeabilityMARVEL Domain Containing 2 ProteinEpithelial CellsCapillary PermeabilityFreeze FracturingClaudin-3Adherens JunctionsJunctional Adhesion MoleculesBlood-Air BarrierCadherinsDogsCommunication BarriersIntercellular JunctionsIntestinal MucosaEndothelial CellsDextransMannitolCells, CulturedCell LineSertoli Cells