BlastocystSingle Embryo TransferEmbryo TransferLive BirthPregnancy RateCryopreservationFertilization in VitroTwinning, MonozygoticEmbryo ImplantationPregnancyVitrificationEmbryo Culture TechniquesCleavage Stage, OvumEmbryonic DevelopmentPregnancy OutcomeEmbryo, MammalianSperm Injections, IntracytoplasmicPregnancy, MultipleMorulaZona PellucidaEmbryonic and Fetal DevelopmentBlastocyst Inner Cell MassInfertilityZygoteBlastomeresCloning, OrganismNuclear Transfer TechniquesEmbryo, NonmammalianCulture TechniquesOocytesInfertility, FemaleEmbryo Implantation, DelayedChick EmbryoTrophoblastsEctogenesisParthenogenesisGene Expression Regulation, DevelopmentalTime FactorsFetal ViabilityRetrospective StudiesUterusCattleCulture MediaEmbryo LossSuperovulationGene Transfer TechniquesChimera