Hypoxia-Ischemia, BrainCarotid ArteriesLigationHypoxia, BrainCarotid Artery DiseasesCarotid Artery, CommonCarotid Artery, InternalBrain IschemiaCarotid StenosisAnoxiaIschemiaAnimals, NewbornNeointimaCarotid Artery InjuriesCerebrovascular CirculationTunica IntimaCarotid Artery, ExternalDisease Models, AnimalBrainArteriesEndarterectomy, CarotidCell HypoxiaCarotid Artery ThrombosisPia MaterRats, Sprague-DawleyHypercapniaRats, WistarIschemic Attack, TransientMyocardial IschemiaNeuroprotective AgentsTime FactorsHypotensionMuscle, Smooth, VascularFemoral ArteryCarotid Artery, Internal, DissectionIntracranial AneurysmCarotid BodyCarotid SinusPulmonary ArteryMice, Inbred C57BLMice, KnockoutCerebral ArteriesMyocytes, Smooth MuscleMyocardial InfarctionArterial Occlusive DiseasesCell DeathTunica MediaCoronary VesselsCerebral AngiographyStentsHepatic ArteryHemodynamicsVertebral ArteryCarotid Intima-Media ThicknessBlood PressureCollateral CirculationUltrasonography, Doppler, DuplexSplenic ArteryRegional Blood FlowRenal ArteryBasilar ArteryMyocardiumHindlimbIliac ArteryReperfusion InjuryMesenteric ArteriesAngioplasty, BalloonAngiographyMagnetic Resonance AngiographyNeuronsSubclavian ArteryCerebral InfarctionEndarterectomyArteriosclerosisOxygenAngiography, Digital SubtractionAngioplastyBlood Flow VelocityMyocardial Reperfusion InjuryDogsStrokeVentricular RemodelingTreatment OutcomeCoronary Artery BypassTomography, X-Ray ComputedCerebrovascular DisordersRadial ArteryEndothelium, VascularRisk FactorsMiddle Cerebral ArteryNeovascularization, PhysiologicRabbitsBrachial ArteryConstrictionCatheterizationGerbillinaeAneurysmProspective StudiesHeartFetal Hypoxia