RNA, Ribosomal, 16SDNA, RibosomalPhylogenyRNA, BacterialGenes, rRNARNA, RibosomalDNA, BacterialMolecular Sequence DataSequence Analysis, DNABase SequenceRNA, Ribosomal, 23SBase CompositionRNA, Ribosomal, 18SBacteriaRNA, Ribosomal, 5SSequence Homology, Nucleic AcidSpecies SpecificitySoil MicrobiologyWater MicrobiologyNucleic Acid HybridizationBacterial Typing TechniquesRNA, Ribosomal, 28SEubacteriumPolymerase Chain ReactionNucleic Acid ConformationGram-Negative Anaerobic BacteriaSeawaterCytophagarRNA OperonFresh WaterAlphaproteobacteriaOligonucleotide ProbesGram-Negative Chemolithotrophic BacteriaArchaeaCrotonatesGram-Positive Asporogenous RodsBetaproteobacteriaFatty AcidsActinomycetalesThiotrichaceaeGammaproteobacteriaRNA, ArchaealCluster AnalysisGeologic SedimentsClostridiumMycobacteriumActinobacteriaBacteria, AerobicSymbiosisDNA, ArchaealGenes, BacterialMetagenomeProteobacteriaPhenotypeHelicobacterSewageFlavobacteriumSequence Analysis, RNAPolymorphism, Restriction Fragment LengthClassificationMycoplasmaDNA PrimersEcosystemBiodiversityGenetic VariationBacteria, AnaerobicGram-Negative Aerobic BacteriaEnvironmental MicrobiologyMolluscaSequence AlignmentBiodegradation, EnvironmentalDNA, Ribosomal SpacerBiological EvolutionMetagenomicsDNA ProbesGram-Positive BacteriaSulfur-Reducing BacteriaTreponemaWaste Disposal, FluidNitrosomonasIn Situ Hybridization, FluorescenceStichopusBacillusIndustrial WasteCyanobacteriaBacteroidesAnaerobiosisRibosomesRNA PrecursorsTerminology as TopicMycobacterium InfectionsSodium ChlorideBacterial ProteinsDesulfovibrioGram-Negative BacteriaCampylobacterVibrioPseudomonasEscherichia coliGills