Cell LineageCell DifferentiationCell LineStem CellsBase SequencePhylogenyMolecular Sequence DataL Cells (Cell Line)Cells, CulturedGene Expression Regulation, DevelopmentalMice, TransgenicTranscription FactorsEmbryo, MammalianSpecies SpecificityClone CellsCell Transformation, NeoplasticMice, Inbred C57BLGene Expression RegulationHematopoietic Stem CellsCell Transformation, ViralSimian virus 40PhenotypeGenesTranscription, GeneticEmbryonic Stem CellsDNAFibroblastsMutationEvolution, MolecularPolyomavirusRNA, MessengerThymus GlandCell DivisionChimeraHybrid CellsHomeodomain ProteinsMice, KnockoutDNA-Binding ProteinsCloning, MolecularAmino Acid SequenceSignal TransductionNucleic Acid HybridizationBiological EvolutionMesodermGerm CellsFlow CytometryTransfectionRetroviridaeB-LymphocytesBasic Helix-Loop-Helix Transcription FactorsSequence Analysis, DNAGene ExpressionDNA, ViralHematopoiesisMice, Inbred StrainsEmbryo, NonmammalianMultipotent Stem CellsEndodermEctodermMorphogenesisPlasmidsGreen Fluorescent ProteinsMice, Inbred BALB CBone Marrow CellsLymphopoiesisT-LymphocytesThymidine KinaseModels, BiologicalAntigens, Viral, TumorTransformation, GeneticLeukemia Virus, MurineDNA PrimersIdoxuridinePromoter Regions, GeneticIn Situ HybridizationFluorescent Antibody TechniqueReceptors, NotchVirus ReplicationUrochordataGenetic VariationImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionCell ProliferationBovine papillomavirus 1Recombination, GeneticBlastomeresDNA, RecombinantGammaretrovirusDNA, MitochondrialNuclear ProteinsDNA Restriction EnzymesTime FactorsDNA ReplicationBody PatterningGenes, ReporterCell NucleusPolymerase Chain ReactionEnteroendocrine CellsEmbryonic DevelopmentMoloney murine leukemia virus