CapillariesElectrophoresis, CapillaryBlood-Brain BarrierCapillary ActionCapillary PermeabilityHemangioma, CapillaryCapillary ResistanceCapillary ElectrochromatographyCapillary Leak SyndromeBlood-Air BarrierBlood-Retinal BarrierMicrocirculationRetinal VesselsCapillary FragilityPermeabilityTight JunctionsCommunication BarriersBlood-Testis BarrierEndothelium, VascularNeovascularization, PhysiologicCapillary TubingEndothelial CellsKidney GlomerulusCorrosion CastingOccludinPericytesNailsMicroscopy, ElectronMicroscopic AngioscopyBlood-Aqueous BarrierTime FactorsEndotheliumGlycocalyxBrainCell Membrane PermeabilityPulmonary CirculationBasement MembraneBlood-Nerve BarrierElectric ImpedanceCells, CulturedRegional Blood FlowPulmonary Wedge PressureRats, Sprague-DawleyVascular Endothelial Growth Factor AZonula Occludens-1 ProteinVenulesSkinChromatography, GasEvans BlueArteriolesMicrovesselsMicroscopy, VideoDisease Models, AnimalIschemiaLungElectrophoresis, MicrochipBlood Flow VelocityHealth Services AccessibilityMice, Inbred C57BLEpidermisModels, BiologicalImmunohistochemistryRats, WistarReproducibility of ResultsCattleFluoresceinIntestinal MucosaDextransMicroscopy, Electron, ScanningMuscle, SkeletalClaudin-5Blood VesselsPerfusionOxygenDiabetic RetinopathyDiffusionPulmonary EdemaNeovascularization, PathologicMembrane ProteinsMice, HairlessHemodynamicsPulmonary AlveoliGranuloma, PyogenicIntercellular JunctionsFocus GroupsDogsCerebrovascular CirculationHematocritClaudinsVeinsFluorescein-5-isothiocyanateBlood Specimen CollectionRabbitsMesenteryBlood PressureMicroscopy, FluorescenceAlbuminsTight Junction ProteinsKidneyClaudin-1