Stem CellsStem Cell TransplantationMyocytes, CardiacEmbryonic Stem CellsHematopoietic Stem CellsAdult Stem CellsHeartMyocardiumPluripotent Stem CellsHematopoietic Stem Cell TransplantationStem Cell NicheCell DifferentiationNeural Stem CellsInduced Pluripotent Stem CellsMesenchymal Stem Cell TransplantationMultipotent Stem CellsMesenchymal Stromal CellsTissue EngineeringStem Cell FactorArrhythmias, CardiacCells, CulturedCardiac OutputModels, CardiovascularCell LineageMyocardial ContractionHeart VentriclesStem Cell ResearchHeart Conduction SystemPlant StemsFetal Stem CellsCell ProliferationRegenerationCardiac Surgical ProceduresTime FactorsHeart DiseasesDeath, Sudden, CardiacMice, Inbred C57BLCardiomegalyRegenerative MedicineHematopoietic Stem Cell MobilizationCell Culture TechniquesBone Marrow CellsCardiac ElectrophysiologyCardiomyopathiesNeoplastic Stem CellsTissue ScaffoldsCardiac Pacing, ArtificialMyoblasts, CardiacSignal TransductionCell SeparationRats, Sprague-DawleyDisease Models, AnimalMyocardial InfarctionOctamer Transcription Factor-3Mice, TransgenicVentricular FunctionBiological MarkersHeart AtriaImmunohistochemistryDogsAction PotentialsAnimals, NewbornEmbryo, MammalianTransplantation, HomologousGene Expression Regulation, DevelopmentalTransplantation, AutologousHeart FailureReverse Transcriptase Polymerase Chain ReactionGene Expression RegulationModels, BiologicalHematopoiesisPeripheral Blood Stem Cell TransplantationCardiac TamponadeVentricular RemodelingFlow CytometryAntigens, CD34Cardiotonic AgentsRNA, MessengerTotipotent Stem CellsMice, KnockoutCell LineMyocardial IschemiaHeart RatePhenotypeElectrocardiographyCardiomyopathy, DilatedMyocarditisCardiac CatheterizationDecanoatesGene ExpressionGene Expression ProfilingEchocardiographyCoculture TechniquesSOXB1 Transcription FactorsHeart TransplantationRats, WistarCell SurvivalVentricular Function, LeftSpermatogoniaModels, Animal