ChorionYolk SacEgg YolkEgg ProteinsExtraembryonic MembranesEndodermal Sinus TumorVitelline MembraneAmnionMesonephromaBombyxPlacentaEndolymphatic SacAllantoisPregnancyAir SacsEndodermEmbryo, MammalianAnal SacsGestational SacHematopoiesis, ExtramedullaryEgg ShellGestational AgeOvumTrophoblastsLabor, ObstetricGene Expression Regulation, DevelopmentalEmbryonic and Fetal Developmentalpha-FetoproteinsPlacentationOogenesisOryziasPinocytosisPregnancy Trimester, FirstPovidoneEmbryonic DevelopmentDysgerminomaEmbryo, NonmammalianHematopoietic Stem CellsDeciduaBase SequenceGene AmplificationMolecular Sequence DataFetusCulture TechniquesEmbryo LossBlood VesselsHematopoiesisTeratomaInsect ProteinsMesonephrosAedesRNA, MessengerErythropoiesisIn Situ HybridizationAmino Acid SequenceCell DifferentiationTesticular NeoplasmsChick EmbryoNeoplasms, Germ Cell and EmbryonalHematopoietic System