Extraembryonic MembranesOviparitySerous MembraneViviparity, NonmammalianAllantoisChorioallantoic MembraneUterusPregnancyMammalsEndodermMembranesCell MembraneMembrane LipidsIntracellular MembranesYolk SacMembrane PotentialsEmbryo, MammalianMembranes, ArtificialGastrulaGene Expression Regulation, DevelopmentalTrophoblastsEctodermEmbryonic and Fetal DevelopmentErythrocyte MembraneMembrane FluidityEmbryonic DevelopmentBlastocystPlacentaAmnionChorionCell Membrane PermeabilityChimeraBasement MembraneGerm LayersEmbryo LossMesodermCell LineageMolecular Sequence DataEmbryonic Stem CellsGATA6 Transcription FactorModels, BiologicalCell DifferentiationIn Situ HybridizationDosage Compensation, GeneticCell LineMembrane Transport ProteinsBase SequenceBlastodermMutationMembrane GlycoproteinsGenomic ImprintingSOXF Transcription FactorsAmino Acid SequenceGene TargetingLipid BilayersVisceraEmbryonic InductionChick EmbryoX Chromosome InactivationGenes, LethalCells, CulturedMorphogenesisGerm CellsMitochondrial MembranesVitelline DuctBody PatterningMicroscopy, ElectronEmbryo, NonmammalianSignal TransductionProtein TransportX ChromosomeHyalinRNA, MessengerSynaptic MembranesTranscription FactorsBone Morphogenetic Protein 4Time FactorsProtein BindingMice, Inbred C57BL