EubacteriumPhylogenyRNA, Ribosomal, 16SMolecular Sequence DataDNA, RibosomalBacteriaGram-Positive Asporogenous RodsDNA, BacterialArchaeaGram-Negative Anaerobic BacteriaSequence Analysis, DNAPeptostreptococcusBase CompositionGenes, rRNABacteria, AnaerobicRNA, BacterialSpecies SpecificityBase SequenceFusobacteriumAmino Acid SequenceGenes, BacterialHydroxysteroid DehydrogenasesBacterial Typing TechniquesBacterial ProteinsClostridiumHalobacteriumAnaerobiosisEscherichia coliGram-Positive RodsSequence Homology, Amino AcidEvolution, MolecularBacteroidesSequence Homology, Nucleic AcidSequence AlignmentFatty AcidsBiological EvolutionFecesNucleic Acid HybridizationThermus thermophilusCloning, MolecularThermotoga maritimaCytophagaActinomycetalesPeriodontal PocketGram-Positive BacteriaThermusGenome, Bacterial