Neuroectodermal Tumors, PrimitivePrimitive StreakNeuroectodermal Tumors, Primitive, PeripheralHematopoietic Stem CellsNeuroectodermal TumorsGastrulaEndodermHematopoiesisAntigens, CD34Yolk SacCell DifferentiationCell LineageColony-Forming Units AssayErythropoiesisMesodermGene Expression Regulation, DevelopmentalBone Marrow CellsADP-ribosyl CyclaseGerm LayersStem Cell FactorChick EmbryoAntigens, CD38Sarcoma, EwingMedulloblastomaErythroid Precursor CellsEmbryo, MammalianEctodermFossilsBlastodermBiological EvolutionBody PatterningCells, CulturedIn Situ HybridizationHagfishesHematopoietic Cell Growth FactorsBone MarrowInterleukin-3Stem CellsErythroblastsCell DivisionNAD+ NucleosidaseEmbryonic and Fetal DevelopmentMolecular Sequence DataChimeraHematopoietic SystemGATA6 Transcription FactorFetal ProteinsAntigens, CDEvolution, ChemicalMorphogenesisFetal BloodDentitionEmbryonic Stem CellsCerebellar NeoplasmsBiogenesisHomeodomain ProteinsHemangioblastsCell SeparationPhylogenyErythroid CellsTranscription FactorsGastrulationAntigens, DifferentiationMeteoroidsEmbryo, NonmammalianBase SequenceMyelopoiesisZebrafish ProteinsSupratentorial NeoplasmsZebrafishEmbryonic InductionEmbryonic DevelopmentFlow CytometryMice, Inbred C57BLGATA1 Transcription FactorAmino Acid SequenceMice, SCIDNodal ProteinThrombopoietinMegakaryocytesBrain NeoplasmsSignal TransductionRNA-Binding Protein EWSCell Culture TechniquesSharksImmunohistochemistryGiardia lambliaTime FactorsProto-Oncogene Proteins c-kitLeukemia, Myelogenous, Chronic, BCR-ABL PositiveProto-Oncogene Protein c-fli-1Skates (Fish)DinosaursFetusDNA-Binding ProteinsBlastocystGranulocyte Colony-Stimulating FactorGene ExpressionMyeloid Progenitor CellsRNA, Messenger