HematopoiesisCell DifferentiationHematopoiesis, ExtramedullaryBlood VesselsGene Expression Regulation, DevelopmentalHematopoietic Stem CellsNeovascularization, PhysiologicCells, CulturedEmbryo, MammalianSignal TransductionCell LineageEmbryo, NonmammalianTranscription FactorsStem CellsEmbryonic Stem CellsZebrafishYolk SacMice, KnockoutMice, Inbred C57BLRNA, MessengerCell LineCell DivisionMolecular Sequence DataCell ProliferationGene Expression RegulationMice, TransgenicEmbryonic DevelopmentDNA-Binding ProteinsBone Marrow CellsIn Situ HybridizationZebrafish ProteinsBase SequencePhenotypeEmbryo LossEndothelial CellsReverse Transcriptase Polymerase Chain ReactionHomeodomain ProteinsHematopoietic SystemReceptors, NotchImmunohistochemistryRetinal VesselsMorphogenesisVascular Endothelial Growth Factor AMesodermBasic Helix-Loop-Helix Transcription FactorsTretinoinGene ExpressionMutationColony-Forming Units AssayCell MovementBone MarrowEmbryonic and Fetal DevelopmentModels, BiologicalProto-Oncogene ProteinsTranscription, GeneticTrans-ActivatorsChick EmbryoReceptor, TIE-2Endothelium, VascularGene Expression ProfilingTime FactorsFlow CytometryErythropoiesisNuclear ProteinsVascular Endothelial Growth Factor Receptor-2Amino Acid SequenceEphrin-B2Promoter Regions, GeneticMyelopoiesisApoptosisDNA PrimersCell CycleQuailMice, Mutant StrainsReceptor, TIE-1Blotting, WesternAnimals, Genetically ModifiedTransfectionPregnancyMembrane ProteinsReceptor, Notch1Antigens, CD34Receptor, EphB4Repressor ProteinsBone Morphogenetic ProteinsCore Binding Factor Alpha 2 SubunitCell Culture TechniquesGranulocytesSex DifferentiationAnimals, NewbornDown-RegulationErythroid Precursor CellsCell SurvivalAntigens, CDReceptors, TIEEndodermUp-RegulationRetinal NeovascularizationTransforming Growth Factor betaCarcinoma, Embryonal