Stem CellsMyocytes, CardiacEmbryonic Stem CellsStem Cell TransplantationHematopoietic Stem CellsAdult Stem CellsPluripotent Stem CellsInduced Pluripotent Stem CellsHematopoietic Stem Cell TransplantationStem Cell NicheCell DifferentiationNeural Stem CellsCells, CulturedMesenchymal Stem Cell TransplantationMultipotent Stem CellsMyocardiumMesenchymal Stromal CellsStem Cell FactorCell LineageStem Cell ResearchFetal Stem CellsCell ProliferationHeartPlant StemsRegenerationAnimals, NewbornSignal TransductionHematopoietic Stem Cell MobilizationCell Culture TechniquesCardiomegalyBone Marrow CellsMice, Inbred C57BLCell SeparationNeoplastic Stem CellsMyocardial ContractionRats, Sprague-DawleyOctamer Transcription Factor-3Mice, TransgenicRegenerative MedicineEmbryo, MammalianFlow CytometryCell SurvivalCell LineReverse Transcriptase Polymerase Chain ReactionHeart VentriclesTransplantation, AutologousHematopoiesisGene Expression Regulation, DevelopmentalRats, WistarApoptosisPeripheral Blood Stem Cell TransplantationAntigens, CD34Time FactorsGene Expression RegulationTotipotent Stem CellsTransplantation, HomologousTissue EngineeringCell- and Tissue-Based TherapyImmunohistochemistrySOXB1 Transcription FactorsCoculture TechniquesGene ExpressionCalciumGene Expression ProfilingGreen Fluorescent ProteinsPhenotypeMice, SCIDMice, KnockoutRNA, MessengerCell TransplantationSpermatogoniaModels, BiologicalTranscription FactorsColony-Forming Units AssayCell SizeDisease Models, AnimalHomeodomain ProteinsGATA4 Transcription FactorMitochondria, HeartBiological MarkersProto-Oncogene Proteins c-kitCell DivisionEmbryoid BodiesBlotting, WesternMyocardial Reperfusion InjuryCardiotonic AgentsMuscle CellsSarcomeresCord Blood Stem Cell TransplantationNestinMyoblasts, CardiacConnexin 43LentivirusCell DedifferentiationNuclear ReprogrammingMicroscopy, ConfocalBone Marrow TransplantationCell ShapeGenetic VectorsGerm Cells