Yolk SacEgg YolkEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEndodermal Sinus TumorVitelline MembraneEmbryo ImplantationMesonephromaEmbryonic DevelopmentEmbryonic and Fetal DevelopmentBlastocystPregnancyEmbryo LossGene Expression Regulation, DevelopmentalEndodermEndolymphatic SacAir SacsAnal SacsGestational SacHematopoiesis, ExtramedullaryPlacentaFertilization in VitroCleavage Stage, OvumExtraembryonic Membranesalpha-FetoproteinsIn Situ HybridizationZebrafishBlastomeresGestational AgeMesodermGastrulaPinocytosisCulture TechniquesEgg ProteinsPovidoneCell DifferentiationMorphogenesisFetusDysgerminomaBlood VesselsMolecular Sequence DataMesonephrosHematopoietic Stem CellsEmbryo DispositionCryopreservationRNA, MessengerAmnionBody PatterningHematopoiesisMorulaTeratomaZygoteChimeraPregnancy Trimester, FirstOocytesTranscription FactorsErythropoiesisZebrafish ProteinsBase SequencePlacentationTime FactorsEctodermTesticular NeoplasmsFetal DeathMice, Inbred ICRNeoplasms, Germ Cell and EmbryonalAllantoisErythroblastsOrgan Culture TechniquesHematopoietic SystemImmunohistochemistryChorionMice, Inbred C57BLCell LineageTeratogensOvumGenes, LethalEmbryo ResearchMaternal-Fetal Exchange