Twinning, MonozygoticGenetic DeterminismCloning, OrganismCloning, MolecularMolecular Sequence DataClone CellsBase SequenceAmino Acid SequenceDNA, ComplementarySequence Homology, Amino AcidSequence AlignmentSequence Analysis, DNASequence Homology, Nucleic AcidDNAEscherichia coliGenes, BacterialRNA, MessengerRestriction MappingPolymerase Chain ReactionPlasmidsChromosome MappingRecombinant ProteinsBlotting, NorthernGene ExpressionGene LibraryBlotting, SouthernPhylogenyDNA, BacterialNucleic Acid HybridizationGenesDNA PrimersSpecies SpecificityCell LineDNA Restriction EnzymesOpen Reading FramesMutationGenomic LibraryTranscription, GeneticTissue DistributionDNA, RecombinantGenetic VectorsMultigene FamilyBacterial ProteinsGenetic Complementation TestTransfectionCosmidsOrgan SpecificityMolecular WeightPhenotypeCarrier ProteinsGene Expression Regulation