BlastocystEmbryo, MammalianEmbryo ImplantationEmbryonic DevelopmentEmbryo Culture TechniquesMorulaEmbryo, NonmammalianFertilization in VitroEmbryonic and Fetal DevelopmentChick EmbryoCleavage Stage, OvumEmbryo TransferPregnancyBlastocyst Inner Cell MassCryopreservationZygoteBlastomeresCloning, OrganismCulture TechniquesOocytesGene Expression Regulation, DevelopmentalNuclear Transfer TechniquesVitrificationEmbryo Implantation, DelayedEctogenesisTrophoblastsEmbryo LossParthenogenesisFetal ViabilityZona PellucidaPregnancy RateSperm Injections, IntracytoplasmicUterusCulture MediaSingle Embryo TransferCattleSuperovulationEctodermChimera