Cell DifferentiationStem CellsBlood VesselsGene Expression Regulation, DevelopmentalCells, CulturedNeovascularization, PhysiologicCell LineageSignal TransductionEmbryo, MammalianEmbryonic Stem CellsHematopoietic Stem CellsEmbryo, NonmammalianTranscription FactorsCell ProliferationMice, Inbred C57BLMice, KnockoutZebrafishRNA, MessengerCell DivisionMice, TransgenicEndothelial CellsCell LineGene Expression RegulationMolecular Sequence DataHomeodomain ProteinsIn Situ HybridizationEmbryonic DevelopmentPhenotypeImmunohistochemistryBase SequenceReceptors, NotchReverse Transcriptase Polymerase Chain ReactionDNA-Binding ProteinsYolk SacMorphogenesisCell MovementBasic Helix-Loop-Helix Transcription FactorsBone Marrow CellsVascular Endothelial Growth Factor ARetinal VesselsMesodermEmbryo LossHematopoiesisZebrafish ProteinsMyeloid Progenitor CellsTretinoinChick EmbryoGene ExpressionEndothelium, VascularAntigens, CD34Flow CytometryMutationTime FactorsNeural Stem CellsModels, BiologicalVascular Endothelial Growth Factor Receptor-2Gene Expression ProfilingEmbryonic and Fetal DevelopmentTranscription, GeneticTrans-ActivatorsEphrin-B2Cell Culture TechniquesReceptor, TIE-2Cell CycleApoptosisPromoter Regions, GeneticNuclear ProteinsNeuronsAmino Acid SequenceColony-Forming Units AssayAnimals, NewbornBlotting, WesternReceptor, TIE-1PregnancyDNA PrimersMembrane ProteinsTransfectionQuailNerve Tissue ProteinsCell SurvivalReceptor, Notch1Receptor, EphB4Bone Morphogenetic ProteinsAntigens, CDGreen Fluorescent ProteinsMesenchymal Stromal CellsRepressor ProteinsAnimals, Genetically ModifiedOrganogenesisProto-Oncogene ProteinsMice, Mutant StrainsEndodermErythroid Precursor CellsSex DifferentiationNeurogenesisDown-RegulationReceptors, TIEUp-RegulationTransforming Growth Factor betaAntigens, CD31