Blood VesselsVeinsLymphatic VesselsRetinal VesselsNeovascularization, PhysiologicCoronary VesselsNeovascularization, PathologicEndothelium, VascularArteriesRegional Blood FlowCapillariesBlood Specimen CollectionEndothelial CellsCerebral VeinsOxygenTime FactorsVascular Endothelial Growth Factor ABlood Flow VelocityImmunohistochemistryDogsBlood Gas AnalysisPericytesMuscle, Smooth, VascularAntigens, CD31Carbon DioxidePortal VeinBlood CirculationPregnancyPartial PressureCerebrovascular CirculationVasodilationSwineLymphatic SystemMesenteric VeinsBlood PressureJugular VeinsCells, CulturedOxygen ConsumptionAngiogenesis InhibitorsDisease Models, AnimalHemodynamicsBlood Vessel ProsthesisAortaAllantoisLymphangiogenesisUmbilical VeinsMice, Inbred C57BLBrainLiver CirculationCerebral ArteriesRabbitsVascular ResistanceVasoconstrictionAngiopoietin-1Receptor, TIE-2ArteriolesHemoglobinsFemoral VeinCapillary PermeabilityEndothelial Growth FactorsVascular Endothelial Growth Factor Receptor-2EndotheliumSkinFemoral ArteryVascular Endothelial Growth FactorsHepatic VeinsCell MovementNitric OxidePulmonary CirculationVenulesPhlebotomyRNA, MessengerModels, BiologicalMicrocirculationRats, Sprague-DawleyBiological MarkersPulmonary ArterySheepAcid-Base EquilibriumSplanchnic CirculationPerfusionDose-Response Relationship, DrugIschemiaCorrosion CastingMesenteric ArteriesAnoxiaMolecular Sequence DataBlood Physiological ProcessesReproducibility of ResultsLactic AcidLymphokinesAngiopoietin-2Retinal ArteryNorepinephrineRetinal VeinUltrasonography, DopplerRats, WistarVasoconstrictor AgentsModels, CardiovascularVasodilator Agents