Myocytes, CardiacMyocardiumMammalsStem CellsCells, CulturedNerve RegenerationAnimals, NewbornHeartLateral VentriclesAdult Stem CellsEpendymaNeuronsRats, Sprague-DawleyCell DifferentiationNeurogenesisRegenerationCerebral VentriclesBromodeoxyuridineSignal TransductionMice, Inbred C57BLRats, WistarCardiomegalyMice, TransgenicProsencephalonHeart VentriclesCalciumAxonsCell ProliferationNeural Stem CellsMyocardial ContractionNerve Tissue ProteinsOlfactory BulbDentate GyrusGene Expression RegulationCell LineageImmunohistochemistryNeurogliaMicroscopy, ConfocalMolecular Sequence DataTime FactorsBrainRNA, MessengerMyelin ProteinsGene Expression Regulation, DevelopmentalMice, KnockoutNestinCell LineCell SurvivalCell CountAmino Acid SequenceMyelin SheathAstrocytes