Cell DifferentiationStem CellsEndothelial CellsNeovascularization, PhysiologicCells, CulturedBlood VesselsGene Expression Regulation, DevelopmentalCell LineageHematopoietic Stem CellsEndothelium, VascularSignal TransductionCell ProliferationVascular Endothelial Growth Factor Receptor-2Antigens, CD34Embryo, MammalianMice, Inbred C57BLCell MovementEmbryonic Stem CellsVascular Endothelial Growth Factor AStem Cell TransplantationBone Marrow CellsTranscription FactorsMice, KnockoutEmbryo, NonmammalianFlow CytometryMice, TransgenicRNA, MessengerCell DivisionCell CountAntigens, CD31PhenotypeZebrafishCell LineColony-Forming Units AssayGene Expression RegulationIschemiaNeovascularization, PathologicImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionAntigens, CDMolecular Sequence DataMyeloid Progenitor CellsReceptor, TIE-2Homeodomain ProteinsIn Situ HybridizationEmbryonic DevelopmentMesenchymal Stromal CellsTime FactorsHindlimbChemokine CXCL12Retinal VesselsBiological MarkersCell AdhesionBasic Helix-Loop-Helix Transcription FactorsBase SequenceFetal BloodHemangioblastsReceptors, NotchRegenerationApoptosisDNA-Binding ProteinsCell Culture TechniquesHematopoiesisYolk SacMorphogenesisMesodermEmbryo LossGene ExpressionCell SeparationZebrafish ProteinsCell SurvivalBlotting, WesternTretinoinGene Expression ProfilingAngiogenic ProteinsModels, BiologicalChick EmbryoAdult Stem CellsGreen Fluorescent ProteinsMutationTransfectionNeural Stem CellsMembrane ProteinsGlycoproteinsCapillariesEmbryonic and Fetal DevelopmentTranscription, GeneticPromoter Regions, GeneticTrans-ActivatorsRetinal NeovascularizationUp-RegulationDisease Models, AnimalPregnancyEphrin-B2Cell CycleAntigens, DifferentiationErythroid Precursor CellsMice, Mutant StrainsCoculture TechniquesProto-Oncogene Proteins