Cloning, OrganismEmbryo ResearchSwineNuclear Transfer TechniquesSus scrofaClone CellsEmbryo, MammalianBlastocystMorulaGuinea PigsEmbryonic and Fetal DevelopmentCloning, MolecularEmbryo, NonmammalianFertilization in VitroChick EmbryoMolecular Sequence DataBase SequencePregnancyCytopathogenic Effect, ViralAmino Acid SequenceOocytesEmbryo TransferEmbryo ImplantationCells, CulturedEmbryonic DevelopmentSequence Homology, Amino AcidDNA, ComplementaryGene Expression Regulation, DevelopmentalRNA, MessengerEmbryo LossEscherichia coliPlasmidsGenes, BacterialDNASequence Analysis, DNABlastomeresSequence Homology, Nucleic AcidCleavage Stage, OvumSequence AlignmentNucleic Acid HybridizationGenesMutation