BlastocystSingle Embryo TransferEmbryo TransferPregnancy, MultiplePregnancy RateFertilization in VitroTwinsSperm Injections, IntracytoplasmicPregnancyLive BirthEmbryo ImplantationCryopreservationEmbryo Culture TechniquesVitrificationTwinning, MonozygoticCleavage Stage, OvumEmbryo, MammalianEmbryonic DevelopmentPregnancy OutcomeReproductive Techniques, AssistedInfertilityMorulaEmbryo, NonmammalianEmbryonic and Fetal DevelopmentBlastomeresZona PellucidaChick EmbryoBlastocyst Inner Cell MassOocytesZygotePreimplantation DiagnosisCloning, OrganismNuclear Transfer TechniquesCulture TechniquesMultiple Birth OffspringGene Expression Regulation, DevelopmentalInfertility, FemaleEmbryo Implantation, DelayedEctogenesisRetrospective StudiesTrophoblastsEmbryo LossParthenogenesisTime FactorsFetal ViabilityBirth RateOvulation InductionCattleCulture MediaUterusSuperovulationEctodermChimeraMaternal AgeGene Transfer TechniquesFallopian TubesMice, Inbred ICREthylene GlycolFertilizationMice, Inbred StrainsCryoprotective AgentsIn Vitro Oocyte Maturation TechniquesEndodermIn Situ HybridizationEndometriumCell CountRNA, Messenger