Embryo TransferOocytesSingle Embryo TransferFertilization in VitroPregnancy RateEmbryo ImplantationPregnancyCryopreservationEmbryo, MammalianPregnancy, MultipleSperm Injections, IntracytoplasmicBlastocystPregnancy OutcomeOocyte DonationLive BirthInfertility, FemaleInfertilityEmbryo, NonmammalianCleavage Stage, OvumOvulation InductionEmbryonic DevelopmentChick EmbryoOocyte RetrievalZygote Intrafallopian TransferReproductive Techniques, AssistedTwinsReproductive TechniquesEmbryonic and Fetal DevelopmentEmbryo Culture TechniquesBlastomeresChorionic GonadotropinAbortion, SpontaneousVitrificationFertilizationOogenesisMorulaBirth RatePreimplantation DiagnosisMenotropinsOvarian Hyperstimulation SyndromeMicroinjectionsZona PellucidaNuclear Transfer TechniquesGene Transfer TechniquesXenopus laevisUterusZygoteEmbryo LossEndometriumOvarySuperovulationSpermatozoaMeiosisFallopian Tube DiseasesTime FactorsProgesteroneCloning, OrganismPregnancy, EctopicMaternal AgeFollicular FluidXenopusCumulus CellsInsemination, ArtificialBuserelinIn Vitro Oocyte Maturation TechniquesCulture TechniquesGene Expression Regulation, DevelopmentalFreezingPregnancy Reduction, MultifetalRetrospective StudiesPregnancy, TwinGene Transfer, HorizontalCattleCatheterizationMetaphaseParthenogenesisLuteal PhaseUltrasonographyMultiple Birth OffspringFertility Agents, FemaleMolecular Sequence DataFallopian TubesEstradiolTwinning, MonozygoticOvulationSurrogate MothersIncubatorsGonadotropin-Releasing HormonePregnancy, TubalOvumFollicle Stimulating HormoneCryoprotective AgentsTripletsNafarelinFetal ViabilityPregnancy, AnimalGamete Intrafallopian TransferTissue and Organ HarvestingChorionic Gonadotropin, beta Subunit, HumanMicromanipulation