BlastocystEmbryonic DevelopmentMorulaEmbryo, MammalianEmbryo ImplantationZygoteEmbryonic and Fetal DevelopmentPreimplantation DiagnosisEmbryo, NonmammalianPregnancyGene Expression Regulation, DevelopmentalOocytesCleavage Stage, OvumBlastomeresChick EmbryoFertilization in VitroEmbryo Culture TechniquesEmbryo TransferEctogenesisGastrulaCryopreservationEmbryo LossCulture TechniquesBlastocyst Inner Cell MassIn Situ HybridizationSperm Injections, IntracytoplasmicEmbryo Implantation, DelayedNuclear Transfer TechniquesBlastulaCloning, OrganismMesodermXenopus ProteinsEctodermPregnancy RateParthenogenesisZebrafishRNA, MessengerEndodermBody PatterningMice, Inbred ICRMorphogenesisVitrificationMolecular Sequence DataSuperovulationFertilizationSea UrchinsMicroinjectionsXenopus laevisTime FactorsAneuploidyPolar BodiesFallopian TubesEmbryonic InductionHomeodomain ProteinsMice, Inbred StrainsBase SequenceEmbryo DispositionUterusCoffeaTranscription FactorsOvumMice, Inbred CBAXenopusCulture MediaCell DifferentiationCattle