CapillariesElectrophoresis, CapillaryCapillary ActionCapillary PermeabilityHemangioma, CapillaryCapillary ResistanceCapillary ElectrochromatographyCapillary Leak SyndromeMicrocirculationRetinal VesselsArteriolesCapillary FragilityMicroscopy, ElectronEndothelium, VascularNeovascularization, PhysiologicBlood Flow VelocityCorrosion CastingRegional Blood FlowCapillary TubingVenulesTime FactorsKidney GlomerulusParticle SizeNailsMicroscopy, Electron, ScanningMicroscopic AngioscopyReproducibility of ResultsPulmonary CirculationMicroscopy, VideoPericytesPulmonary Wedge PressureBlood PressureHemodynamicsBasement MembraneEndotheliumCoronary VesselsEndothelial CellsVeinsChromatography, GasIschemiaRats, Sprague-DawleyEquipment DesignMuscle, SkeletalSensitivity and SpecificityVascular Endothelial Growth Factor AVasodilationRetinal ArteryGlycocalyxBlood-Brain BarrierPressureElectrophoresis, MicrochipLungModels, CardiovascularVascular ResistanceMicrospheresBlood VesselsCattleRats, WistarArteriesDisease Models, AnimalImmunohistochemistryDogsRabbitsTomography, X-Ray ComputedRetinal VeinOxygenPerfusionDilatation, PathologicReference ValuesSkinCells, CulturedNeovascularization, PathologicHematocritMicrovesselsStress, MechanicalMesenteryLasersAortic Aneurysm, AbdominalCerebrovascular CirculationDiabetic RetinopathyModels, BiologicalTreatment OutcomePia MaterAorta, AbdominalOvarian FollicleImaging, Three-DimensionalGranuloma, PyogenicPupilCoronary CirculationBrainVasoconstrictionErythrocytesSwineMicroscopyImage Processing, Computer-AssistedKidneyRheologyOrgan SizeMice, Inbred C57BLBlood Specimen Collection