Cell DifferentiationMyocytes, CardiacStem CellsCells, CulturedMyocardiumHematopoietic Stem CellsSignal TransductionStem Cell TransplantationEmbryonic Stem CellsCell LineagePluripotent Stem CellsGene Expression Regulation, DevelopmentalAnimals, NewbornCell LineAdult Stem CellsTranscription FactorsCell ProliferationHeartPlant StemsGene Expression RegulationRNA, MessengerInduced Pluripotent Stem CellsNeoplastic Stem CellsMesenchymal Stromal CellsMice, Inbred C57BLMice, TransgenicNeural Stem CellsCell DivisionReverse Transcriptase Polymerase Chain ReactionCardiomegalyRats, Sprague-DawleySex DifferentiationMice, KnockoutGene ExpressionImmunohistochemistryApoptosisMyocardial ContractionMultipotent Stem CellsMolecular Sequence DataPhenotypeTime FactorsHomeodomain ProteinsTretinoinEmbryo, MammalianDNA-Binding ProteinsBase SequenceCell SurvivalRegenerationBone Marrow CellsStem Cell NicheRats, WistarBlotting, WesternOsteogenesisCalciumFlow CytometryCell Culture TechniquesGene Expression ProfilingHeart VentriclesHematopoietic Stem Cell TransplantationAntigens, DifferentiationTransfectionMesenchymal Stem Cell TransplantationModels, BiologicalCell SeparationOsteoblastsUp-RegulationTranscription, GeneticNeuronsCell SizeAdipogenesisGATA4 Transcription FactorPhosphorylationCoculture TechniquesMuscle DevelopmentPromoter Regions, GeneticStem Cell FactorMyoblastsDown-RegulationIn Situ HybridizationBasic Helix-Loop-Helix Transcription FactorsTrans-ActivatorsMutationBiological MarkersMuscle CellsMitochondria, HeartCell CycleMesodermAdipocytesFetal Stem CellsEnzyme ActivationDNA PrimersGreen Fluorescent ProteinsFibroblastsNuclear ProteinsFluorescent Antibody TechniqueMuscle ProteinsMicroscopy, ConfocalBone Morphogenetic ProteinsSarcomeresHematopoiesis