Cell DifferentiationGene Expression ProfilingGene ExpressionGene Expression RegulationGene Expression Regulation, DevelopmentalBlood VesselsRNA, MessengerSignal TransductionCells, CulturedTranscription FactorsNeovascularization, PhysiologicEmbryo, MammalianEmbryo, NonmammalianMolecular Sequence DataOligonucleotide Array Sequence AnalysisEmbryonic Stem CellsCell LineBase SequenceReverse Transcriptase Polymerase Chain ReactionStem CellsCell LineageTranscription, GeneticZebrafishDNA-Binding ProteinsMice, Inbred C57BLPromoter Regions, GeneticMice, KnockoutIn Situ HybridizationCell ProliferationMice, TransgenicCell DivisionPhenotypeEmbryonic DevelopmentHomeodomain ProteinsImmunohistochemistryEndothelial CellsMorphogenesisMutationRetinal VesselsEmbryo LossVascular Endothelial Growth Factor ATretinoinTrans-ActivatorsYolk SacNuclear ProteinsReceptors, NotchZebrafish ProteinsTransfectionMesodermModels, BiologicalDNA PrimersAmino Acid SequenceTime FactorsGene Expression Regulation, NeoplasticChick EmbryoBasic Helix-Loop-Helix Transcription FactorsUp-RegulationCell MovementBlotting, WesternDown-RegulationRepressor ProteinsEmbryonic and Fetal DevelopmentGene Expression Regulation, PlantEndothelium, VascularGenes, ReporterApoptosisCell CycleEphrin-B2PregnancyBlotting, NorthernTumor Cells, CulturedMembrane ProteinsReceptor, TIE-2Gene Expression Regulation, EnzymologicReceptor, TIE-1Vascular Endothelial Growth Factor Receptor-2Animals, NewbornQuailReceptor, EphB4Animals, Genetically ModifiedSex DifferentiationCell NucleusProtein BindingCell Line, TumorDNA, ComplementaryCloning, MolecularTransforming Growth Factor betaProto-Oncogene ProteinsGreen Fluorescent ProteinsBlastocystPolymerase Chain ReactionBone Morphogenetic ProteinsRNA, Small InterferingCell Culture TechniquesDNAPhosphorylationCarcinoma, EmbryonalCell SurvivalReceptors, TIEEndoderm