Embryo TransferBlastodermGerm CellsSingle Embryo TransferChimeraFertilization in VitroChick EmbryoTransplantation ChimeraPregnancy RateEmbryo ImplantationPregnancyEmbryo, MammalianCryopreservationPregnancy, MultipleSperm Injections, IntracytoplasmicPregnancy OutcomeBlastocystLive BirthInfertilityInfertility, FemaleEmbryo, NonmammalianOvulation InductionCleavage Stage, OvumOocyte DonationZygote Intrafallopian TransferTwinsReproductive Techniques, AssistedReproductive TechniquesEmbryonic DevelopmentEmbryonic and Fetal DevelopmentBlastomeresOocytesAbortion, SpontaneousEmbryo Culture TechniquesChorionic GonadotropinBirth RateMorulaPreimplantation DiagnosisGene Transfer TechniquesUterusTime FactorsOvarian Hyperstimulation SyndromeVitrificationMenotropinsKidney TransplantationEmbryo LossRetrospective StudiesEndometriumCloning, OrganismNuclear Transfer TechniquesFallopian Tube DiseasesOocyte RetrievalSuperovulationPregnancy, EctopicGene Transfer, HorizontalInsemination, ArtificialGraft RejectionMaternal AgePregnancy Reduction, MultifetalFertilizationZona PellucidaTreatment OutcomeBuserelinProgesteroneCatheterizationPregnancy, TwinGraft SurvivalZygoteCulture TechniquesFreezingTransplantation, HomologousUltrasonographyMultiple Birth OffspringTissue DonorsTwinning, MonozygoticLuteal PhaseGene Expression Regulation, DevelopmentalSpermatozoaProspective StudiesLiver TransplantationPregnancy, TubalFollicle Stimulating HormoneSurrogate MothersIncubatorsFertility Agents, FemaleFallopian TubesOvaryMicroinjectionsTripletsMicromanipulationPregnancy, AnimalGonadotropin-Releasing HormoneFollicular FluidEstradiolCattleTissue and Organ HarvestingFetal ViabilityHeart TransplantationPregnancy MaintenanceLitter Size