PermeabilityCell Membrane PermeabilityCapillary PermeabilityDiffusionReproducibility of ResultsWaterTight JunctionsBlood-Brain BarrierMannitolLactuloseOsmosisMitochondrial Membrane Transport ProteinsDentin PermeabilityEvans BlueModels, BiologicalBiological TransportTime FactorsCalciumOccludinIntestinal AbsorptionKineticsAquaporinsMembrane PotentialsDextransElectric ImpedanceSodiumMitochondrial SwellingPotassiumCaco-2 CellsMathematicsAquaporin 1FluoresceinHydrogen-Ion ConcentrationObserver VariationMembranes, ArtificialZonula Occludens-1 ProteinIon ChannelsChloridesSensitivity and SpecificityCells, CulturedEndothelium, VascularAlbuminsFluoresceinsSkin AbsorptionRabbitsRats, Sprague-DawleyBlood-Retinal BarrierAlgorithmsBody WaterIntercellular JunctionsOsmolar ConcentrationFluorescein-5-isothiocyanateUreaInulinIntestinal MucosaCattleBlood-Air BarrierTemperatureCell MembraneSucroseFluorescent DyesCyclophilinsMembrane ProteinsIntracellular MembranesElectric ConductivityMitochondriaCapillariesBiological Transport, ActiveLungEndothelial CellsRats, WistarBrainClaudinsVascular Endothelial Growth Factor AComputer SimulationMitochondria, LiverPulmonary EdemaClaudin-5FrictionModels, TheoreticalSolubilityMicroscopy, ElectronDose-Response Relationship, DrugEpitheliumDiffusion Chambers, CultureCyclosporineMicrocirculationPhysicochemical PhenomenaDogsLiposomesLipid BilayersPerfusionImage Processing, Computer-AssistedMagnetic Resonance ImagingSkinIntestinesRubidiumReference ValuesChemistry, PhysicalOctanols