Embryo, MammalianEmbryo, NonmammalianBlastocystClone CellsChick EmbryoEmbryo ImplantationEmbryonic DevelopmentCleavage Stage, OvumBlastomeresEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalFertilization in VitroZygoteMorulaMolecular Sequence DataGastrulaPregnancyBase SequenceOocytesEmbryo Culture TechniquesCloning, MolecularCryopreservationAmino Acid SequenceEmbryo LossIn Situ HybridizationRNA, MessengerMesodermZebrafishEctogenesisCulture TechniquesXenopus ProteinsBody PatterningMorphogenesisCloning, OrganismDNA, ComplementaryNuclear Transfer TechniquesEctodermSea UrchinsXenopus laevisEndodermBlastocyst Inner Cell MassEmbryonic InductionBlastulaEmbryo TransferEmbryo DispositionPreimplantation DiagnosisTranscription FactorsHomeodomain ProteinsSperm Injections, IntracytoplasmicMicroinjectionsCell DifferentiationTime FactorsXenopusPregnancy RateGene ExpressionVitrificationSequence Homology, Amino AcidZebrafish ProteinsParthenogenesisCoffeaMutationAnimals, Genetically ModifiedFertilizationDNANervous SystemOvumTranscription, GeneticMice, Inbred ICRSuperovulationPolymerase Chain ReactionMice, Inbred StrainsEmbryo ResearchDrosophila ProteinsSingle Embryo TransferPolar BodiesCattleCell LineagePhenotypeMice, Inbred C57BLDNA-Binding ProteinsCell LineDNA PrimersCulture MediaReverse Transcriptase Polymerase Chain ReactionSignal TransductionSeedsFallopian TubesCell DivisionCell NucleusMice, Inbred CBASequence AlignmentImmunohistochemistryGerm CellsDrosophilaSequence Analysis, DNAGenes, HomeoboxNucleic Acid HybridizationEmbryonic Stem CellsOogenesisSequence Homology, Nucleic Acid