BacteriaGram-Negative BacteriaGram-Positive BacteriaBacteria, AnaerobicNasal CavityRNA, Ribosomal, 16SMolecular Sequence DataBacteria, AerobicPeritoneal CavityDNA, BacterialBacterial ProteinsPhylogenyEscherichia coliDNA, RibosomalSequence Analysis, DNAMouthWater MicrobiologyBacterial Physiological PhenomenaGram-Negative Aerobic BacteriaGram-Negative Anaerobic BacteriaAnti-Bacterial AgentsSoil MicrobiologyDental Cavity PreparationColony Count, MicrobialRNA, BacterialGenes, BacterialSulfur-Reducing BacteriaSeawaterGene Expression Regulation, BacterialCulture MediaPleural CavityAmino Acid SequenceAnaerobiosisSymbiosisGenes, rRNAGenome, BacterialBacterial AdhesionBase CompositionSpecies SpecificityBiodegradation, EnvironmentalBase SequencePseudomonasEnterobacteriaceaeFresh WaterBiofilmsBacteriological TechniquesBacterial InfectionsGammaproteobacteriaMicrobial Sensitivity TestsBacteroidesProteobacteriaFermentationBacterial Typing TechniquesPseudomonas aeruginosaGeologic SedimentsAerobiosisStreptococcusStaphylococcus aureusMicrobial ViabilityHydrogen-Ion ConcentrationModels, MolecularBetaproteobacteriaVibrioTemperatureMutationVirulencePolymerase Chain ReactionCytophagaFatty AcidsBacillusOxidation-ReductionCloning, MolecularPlasmidsSequence Homology, Amino AcidMouth NeoplasmsSalmonella typhimuriumAntibiosisArchaeaFecesGram-Negative Bacterial InfectionsFungiPhagocytosisSequence AlignmentClostridiumIntestinesMicroscopy, Electron, ScanningEubacteriumBacillus subtilisMicroscopy, ElectronGastrointestinal TractCrystallography, X-RayDental Cavity LiningBacterial LoadBacterial Outer Membrane ProteinsDental PlaqueActinobacteriaPhenotypeListeria monocytogenesSodium ChlorideTime Factors