Cell LineageCell DifferentiationStem CellsPhylogenyGene Expression Regulation, DevelopmentalCell DivisionMolecular Sequence DataMice, TransgenicTranscription FactorsHematopoietic Stem CellsHomeodomain ProteinsEvolution, MolecularCells, CulturedBase SequencePhenotypeMice, Inbred C57BLGerm CellsBiological EvolutionMesodermSignal TransductionEmbryo, NonmammalianEmbryonic Stem CellsThymus GlandMorphogenesisModels, BiologicalEmbryo, MammalianBasic Helix-Loop-Helix Transcription FactorsMutationReceptors, NotchSequence Analysis, DNAFlow CytometryDNA-Binding ProteinsMice, KnockoutB-LymphocytesBlastomeresGene Expression RegulationClone CellsBone Marrow CellsDrosophila ProteinsIn Situ HybridizationCell ProliferationGreen Fluorescent ProteinsHematopoiesisChimeraDrosophilaMultipotent Stem CellsEndodermEctodermBody PatterningCell LineImmunohistochemistryLymphopoiesisAmino Acid SequenceCaenorhabditis elegansMitosisGenetic VariationEmbryonic DevelopmentCell SeparationUrochordataT-LymphocytesRNA, MessengerSpecies SpecificityTime FactorsGene ExpressionCell CycleAnimals, Genetically ModifiedNeuronsZebrafishEnteroendocrine CellsBromodeoxyuridineDNA PrimersReverse Transcriptase Polymerase Chain ReactionRegenerationPluripotent Stem CellsNeural CrestModels, GeneticIntegrasesVulvaGerm LayersCell CountTranscription, GeneticGene Expression ProfilingEpithelial CellsEmbryonic InductionDrosophila melanogasterTrans-ActivatorsBlastocystNerve Tissue ProteinsNuclear ProteinsPolymerase Chain ReactionTrophoblastsCell MovementCaenorhabditis elegans ProteinsGenes, ReporterCentral Nervous SystemTransgenesDNA, MitochondrialNervous SystemSense OrgansOligodendroglia