HematopoiesisHematopoietic Stem CellsLymphocytesFetusHematopoiesis, ExtramedullaryLiverLymphocyte ActivationT-LymphocytesLymphocyte SubsetsLymphocyte CountBone Marrow CellsB-LymphocytesBone MarrowColony-Forming Units AssaySpleenCells, CulturedHematopoietic SystemCell DifferentiationYolk SacFlow CytometryMice, Inbred C57BLMyelopoiesisCell LineageLymphocyte Culture Test, MixedLeukocyte CountErythropoiesisCore Binding Factor Alpha 2 SubunitAntigens, CD34Antigens, CDLymphocytes, Tumor-InfiltratingGranulocytesMice, KnockoutPhytohemagglutininsCD4-Positive T-LymphocytesT-Lymphocytes, CytotoxicCell DivisionLymphocyte TransfusionErythroid Precursor CellsMice, Inbred BALB CCell LineCytotoxicity, ImmunologicHemangioblastsThymus GlandConcanavalin ALymphopoiesisCell SeparationClone CellsLeukemiaGATA1 Transcription FactorGATA2 Transcription FactorMolecular Sequence DataInterleukin-2Blood CellsImmunophenotypingAntibodies, MonoclonalErythroid CellsMyeloid Progenitor CellsGene Expression Regulation, DevelopmentalT-Lymphocyte SubsetsBone Marrow TransplantationLymphocyte DepletionCD8-Positive T-LymphocytesSignal TransductionAntigens, CD45Stem Cell FactorMegakaryocytesAntigens, CD3Transcription FactorsProto-Oncogene ProteinsCytokinesMice, TransgenicMesonephrosZebrafishReceptors, Lymphocyte HomingImmunity, CellularLymph NodesFetal BloodHematopoietic Cell Growth FactorsKiller Cells, NaturalMyeloid CellsDNA-Binding ProteinsBase SequenceMitogensStromal CellsTime FactorsBlood Cell CountHematopoietic Stem Cell TransplantationInterleukin-3RNA, MessengerGene Expression RegulationPhenotypeInterferon-gammaLymphocyte CooperationApoptosisAntigens, SurfaceLymphocyte Function-Associated Antigen-1Rosette FormationLymphoid TissueZebrafish ProteinsPancytopenia