Denaturing Gradient Gel ElectrophoresisElectrophoresis, Polyacrylamide GelElectrophoresisRNA, Ribosomal, 16SBacteriaElectrophoresis, Agar GelDNA, RibosomalDNA, BacterialPolymerase Chain ReactionNucleic Acid DenaturationMolecular Sequence DataSequence Analysis, DNASoil MicrobiologyElectrophoresis, Gel, Pulsed-FieldElectrophoresis, Gel, Two-DimensionalDNA FingerprintingGelsBiodiversityEcosystemPhylogenyMolecular WeightFresh WaterElectrophoresis, CapillaryBase SequenceBetaproteobacteriaGenes, rRNABiotaWater MicrobiologyColony Count, MicrobialPlanktonBiodegradation, EnvironmentalProteobacteriaDNA PrimersBioreactorsCentrifugation, Density GradientCluster AnalysisLactobacillusParticle SizeBlood Protein ElectrophoresisMicrobial ConsortiaLinuronSeawaterGeologic SedimentsMetagenomeRNA, BacterialLipoproteins, HDL2NitrosomonasArchaeaFecesCheeseLipoproteins, HDL3PetroleumSulfur-Reducing BacteriaRhizophoraceaeLipoproteins, HDLRNA, Ribosomal, 18SSoilWaste Disposal, FluidMutationTemperatureSoil PollutantsGenetic VariationDNA Mutational AnalysisBacterial Typing TechniquesBifidobacteriumSpecies SpecificityRhizosphereEnvironmental MicrobiologyCombretaceaeChromatography, GelIsoelectric FocusingKineticsSewageMethaneStreptococcaceaeUltracentrifugationDNAHydrogen-Ion ConcentrationWater PurificationAmmoniaAmino Acid SequenceRiversOil and Gas FieldsFungiPolymorphism, Restriction Fragment LengthLipoproteins, LDLMethanosarcinalesFermentationElectrophoresis, DiscWater Pollution, ChemicalBacterial ProteinsGammaproteobacteriaElectrophoresis, Starch GelDNA, ArchaealExonsChromatography, AffinityApolipoproteinsActinobacteriaGastrointestinal TractPorifera