BacteriaEnvironmentGram-Negative BacteriaGram-Positive BacteriaBacteria, AnaerobicRNA, Ribosomal, 16SMolecular Sequence DataPhylogenyBacterial ProteinsDNA, BacterialBacteria, AerobicEscherichia coliWater MicrobiologyDNA, RibosomalSequence Analysis, DNASeawaterSoil MicrobiologyBacterial Physiological PhenomenaSocial EnvironmentEnvironment DesignAnti-Bacterial AgentsGram-Negative Aerobic BacteriaGram-Negative Anaerobic BacteriaGene Expression Regulation, BacterialEnvironment, ControlledCulture MediaGenes, BacterialColony Count, MicrobialRNA, BacterialFresh WaterSulfur-Reducing BacteriaGenome, BacterialAnaerobiosisSpecies SpecificityAmino Acid SequenceSymbiosisBiodegradation, EnvironmentalGenes, rRNABase SequenceEnvironmental MicrobiologyGeologic SedimentsBase CompositionEcosystemTemperatureBacterial AdhesionPseudomonasEnterobacteriaceaeBiofilmsHydrogen-Ion ConcentrationBacteriological TechniquesGammaproteobacteriaAerobiosisProteobacteriaMicrobial Sensitivity TestsBacterial Typing TechniquesOxidation-ReductionPseudomonas aeruginosaMicrobial ViabilityFermentationBacterial InfectionsMutationModels, BiologicalPhenotypeVirulenceBacteroidesPolymerase Chain ReactionAdaptation, PhysiologicalVibrioArchaeaStaphylococcus aureusBiodiversityFungiBetaproteobacteriaHealth Facility EnvironmentPlasmidsAir MicrobiologyFecesTime FactorsStreptococcusCloning, MolecularCytophagaFatty AcidsBacillusSalmonella typhimuriumSequence Homology, Amino AcidBiological EvolutionModels, MolecularHot TemperatureSequence AlignmentMarine BiologyFood MicrobiologyGene Transfer, HorizontalAntibiosisGastrointestinal TractSodium ChlorideMetagenomeGram-Negative Bacterial InfectionsCluster AnalysisKineticsIntestines