MorphogenesisEmbryo, MammalianEmbryo, NonmammalianChick EmbryoEmbryonic DevelopmentBlastocystGene Expression Regulation, DevelopmentalEmbryo ImplantationEmbryonic and Fetal DevelopmentZygoteBlastomeresBody PatterningCleavage Stage, OvumEmbryo LossIn Situ HybridizationOocytesMesodermFertilization in VitroPregnancyZebrafishGastrulaMolecular Sequence DataMorulaDrosophila ProteinsDrosophilaXenopus ProteinsZebrafish ProteinsHomeodomain ProteinsEctodermTranscription FactorsAmino Acid SequenceMutationCell DifferentiationSignal TransductionBase SequenceAnimals, Genetically ModifiedEndodermRNA, MessengerCulture TechniquesEmbryo DispositionDrosophila melanogasterXenopus laevisCaenorhabditis elegansPhenotypeEmbryonic InductionCryopreservationOogenesisEctogenesisFertilizationCaenorhabditis elegans ProteinsCell PolarityXenopusBlastodermOvumCloning, OrganismNervous SystemModels, BiologicalSea UrchinsNuclear Transfer TechniquesEpitheliumNotochordOrganogenesisGerm CellsRNA, Messenger, StoredParthenogenesisTime FactorsMicroinjectionsDNA-Binding ProteinsGenes, InsectSeedsSequence Homology, Amino AcidBone Morphogenetic ProteinsEmbryo ResearchSingle Embryo TransferGastrulationImmunohistochemistryGenes, HomeoboxEmbryologyNeural CrestSperm Injections, IntracytoplasmicCell DivisionCell NucleusMice, Inbred ICRCloning, MolecularCell MovementGene ExpressionCell LineageSomitesGenes, LethalLarvaChimeraWnt ProteinsExtremitiesFibroblast Growth FactorsUrochordataPregnancy RateEpithelial CellsDNA, ComplementaryQuailFallopian Tubes