SpleenHeartHeart RateHeart FailureHeart DiseasesHeart TransplantationHeart Defects, CongenitalFetal HeartHeart ValvesHeart AtriaHeart BlockMyocardiumHeart Arrest, InducedHeart Function TestsMice, Inbred C57BLTime FactorsMyocardial ContractionMyocardial IschemiaMice, Inbred BALB CMyocytes, CardiacSplenectomyHemodynamicsCoronary DiseaseDisease Models, AnimalMice, Inbred StrainsLiverPerfusionCardiac Output, LowWandering SpleenVentricular Function, LeftTissue DistributionHeart, ArtificialHeart Failure, SystolicCardiomyopathy, DilatedCardiomegalyMyocardial InfarctionSplenomegalyHeart InjuriesHeart Rate, FetalHeart SeptumDogsT-LymphocytesCardiotonic AgentsRheumatic Heart DiseaseStroke VolumeCardiomyopathiesEchocardiographyRisk FactorsSplenic NeoplasmsMyocardial Reperfusion InjuryHeart ArrestLymph NodesCells, CulturedHeart Valve ProsthesisThymus GlandOrgan SpecificitySpleen Focus-Forming VirusesVentricular Dysfunction, LeftMice, KnockoutAdrenergic beta-AntagonistsRats, Sprague-DawleyHeart Failure, DiastolicLymphocytesRNA, MessengerAmerican Heart AssociationRats, WistarVentricular RemodelingChronic DiseaseAntibody FormationRabbitsProspective StudiesB-LymphocytesOxygen ConsumptionFollow-Up StudiesKidneyMolecular Sequence DataTreatment OutcomeLymphoid TissueHeart NeoplasmsSympathetic Nervous SystemAutonomic Nervous SystemCardiac Pacing, ArtificialMice, Inbred C3HHeart Septal DefectsHypoplastic Left Heart SyndromeLungHemolytic Plaque TechniqueNational Heart, Lung, and Blood Institute (U.S.)Lymphocyte ActivationNatriuretic Peptide, BrainMice, Inbred CBAVentricular PressureExercise TestBone MarrowMacrophagesAntibody-Producing CellsModels, CardiovascularDose-Response Relationship, DrugConcanavalin ANorepinephrine