Cell LineagePhylogenyEvolution, MolecularCell DifferentiationPhylogeographyBiological EvolutionMolecular Sequence DataSequence Analysis, DNADNA, MitochondrialGenetic SpeciationGenetic VariationGeographyStem CellsReproduction, AsexualBase SequenceGene Expression Regulation, DevelopmentalSpecies SpecificityT-Lymphocyte SubsetsHematopoietic Stem CellsMice, TransgenicCluster AnalysisHematopoiesisGenetics, PopulationRNA, Ribosomal, 18SBayes TheoremMice, Inbred C57BLModels, GeneticLymphocyte SubsetsTranscription FactorsCells, CulturedPhenotypeDNA, RibosomalLikelihood FunctionsBiodiversityFlow CytometryModels, BiologicalSequence AlignmentHaplotypesGenomeGenotypeSignal TransductionSelection, GeneticAmino Acid SequencePolymerase Chain ReactionMice, KnockoutDNA PrimersEcosystemMacrophagesCell LineDNA, BacterialB-Lymphocyte SubsetsT-LymphocytesImmunophenotypingThymus GlandB-LymphocytesAntigens, CDHomeodomain ProteinsMutationCD4-Positive T-LymphocytesGene Expression ProfilingGene Expression RegulationBone Marrow CellsCell SeparationRNA, MessengerDNA-Binding ProteinsLymphocyte ActivationReverse Transcriptase Polymerase Chain ReactionAntigens, CD8Embryonic Stem CellsAntigens, CD45ImmunohistochemistryGene ExpressionCell ProliferationCD8-Positive T-LymphocytesKiller Cells, NaturalDendritic CellsTime FactorsClone CellsLymphopoiesisBasic Helix-Loop-Helix Transcription FactorsMultipotent Stem CellsIn Situ HybridizationSpleenMultigene FamilyT-Lymphocytes, Helper-InducerAntibodies, MonoclonalMesodermTranscription, GeneticCell DivisionMice, Inbred BALB CEmbryo, MammalianFossilsAntigens, SurfaceNeuronsMyeloid CellsOligonucleotide Array Sequence AnalysisGene DuplicationDrosophilaMonocytesCytokines