Sequence Analysis, DNAMolecular Sequence DataBase SequenceAmino Acid SequencePhylogenyCloning, MolecularSequence AnalysisSequence Homology, Nucleic AcidDNA, BacterialSequence Homology, Amino AcidSequence AlignmentGenes, BacterialRNA, Ribosomal, 16SPolymerase Chain ReactionDNA, RibosomalRestriction MappingOpen Reading FramesBacterial ProteinsMutationSpecies SpecificityDNADNA, ComplementaryGenetic VariationMultigene FamilyEscherichia coliBase CompositionNucleic Acid HybridizationGene LibraryDNA PrimersEvolution, MolecularChromosome MappingSequence Analysis, ProteinPlasmidsGenes, rRNAGenesSequence HomologyGenome, ViralRNA, MessengerGenome, BacterialBlotting, SouthernBacterial Typing TechniquesTranscription, GeneticConserved SequenceExonsRepetitive Sequences, Nucleic AcidRNA, BacterialDNA Transposable ElementsDNA, Ribosomal SpacerPhenotypeDNA Mutational AnalysisCluster AnalysisGenotypeDNA, ViralDNA Restriction EnzymesMolecular WeightGenomic LibrarySequence Analysis, RNACodonIntronsDNA, FungalBlotting, NorthernGenes, ViralMutagenesis, InsertionalOperonGenetic Complementation TestPromoter Regions, GeneticElectrophoresis, Polyacrylamide GelSoil MicrobiologyGenomicsPolymorphism, Restriction Fragment LengthOligonucleotide ProbesRecombinant ProteinsRNA, ViralAllelesGene OrderBinding SitesPeptide FragmentsGene ExpressionRecombination, GeneticGenomeGene Expression Regulation, BacterialCattleExpressed Sequence TagsViral ProteinsPoint MutationGenes, FungalChromatography, High Pressure LiquidPolymorphism, GeneticBiological EvolutionComputational BiologyCell LineReverse Transcriptase Polymerase Chain ReactionDNA, MitochondrialPedigreeConsensus SequenceNucleic Acid ConformationBacteriaDNA, PlantFatty AcidsVirulence