Cell LineageCell DifferentiationStem CellsPhylogenyGene Expression Regulation, DevelopmentalMice, TransgenicTranscription FactorsHematopoietic Stem CellsMolecular Sequence DataEvolution, MolecularHomeodomain ProteinsMice, Inbred C57BLEmbryonic Stem CellsThymus GlandBase SequenceCells, CulturedMesodermGerm CellsEmbryo, MammalianPhenotypeBasic Helix-Loop-Helix Transcription FactorsBiological EvolutionSignal TransductionMice, KnockoutHematopoiesisChimeraEmbryo, NonmammalianMultipotent Stem CellsEndodermEctodermMorphogenesisB-LymphocytesBone Marrow CellsFlow CytometrySequence Analysis, DNALymphopoiesisDNA-Binding ProteinsGene Expression RegulationIn Situ HybridizationCell DivisionReceptors, NotchUrochordataBlastomeresClone CellsModels, BiologicalT-LymphocytesImmunohistochemistryCell LineGenetic VariationBody PatterningEnteroendocrine CellsEmbryonic DevelopmentGene ExpressionGreen Fluorescent ProteinsCell SeparationCell ProliferationPluripotent Stem CellsNeural CrestRNA, MessengerMutationIntegrasesAmino Acid SequenceGerm LayersSpecies SpecificityCaenorhabditis elegansBlastocystReverse Transcriptase Polymerase Chain ReactionTrophoblastsDNA PrimersTrans-ActivatorsZebrafishPrecursor Cells, T-LymphoidAnimals, Genetically ModifiedDrosophila ProteinsDrosophilaTranscription, GeneticBlastocyst Inner Cell MassGene Expression ProfilingOrgan SpecificityPaneth CellsVulvaTransgenesReceptor, Notch1Polymerase Chain ReactionGenes, ReporterRegenerationModels, GeneticMosaicismEmbryonic InductionDNA, MitochondrialGonadsNeuronsMesenchymal Stromal CellsPromoter Regions, GeneticChief Cells, GastricRepressor ProteinsTime FactorsEpithelial CellsT-Lymphocyte SubsetsGenes, Homeobox