Bacteroides fragilisBacteroidesBacteroides InfectionsBacteria, AnaerobicPrevotella melaninogenicaFusobacteriumClindamycinCefoxitinMicrobial Sensitivity TestsAbscessAnaerobiosisAnti-Bacterial AgentsDrug Resistance, MicrobialMetronidazoleDNA, BacterialImipenemCefotetanBacteriaPrevotellaPeptostreptococcusbeta-LactamasesBacteria, AerobicFecesAbdominal AbscessNaphthyridinesGenes, BacterialGram-Negative Anaerobic BacteriaEscherichia coliSpecies SpecificitySuppurationCephamycinsConjugation, GeneticCephalosporinaseCulture MediaMoxalactamPolysaccharides, BacterialAnti-Infective AgentsThienamycinsFluoroquinolonesCephalosporinsBacterial ProteinsPorphyromonasDNA Transposable ElementsTetracyclineBacterial InfectionsClostridiumPenicillanic AcidMolecular Sequence DataBacteroidaceaeCeftizoximeLactamsGram-Positive BacteriaSequence Analysis, DNAbeta-LactamsEnterotoxinsRNA, Ribosomal, 16SAza CompoundsErythromycinCefmetazoleColony Count, MicrobialCedrusPiperacillinMetalloendopeptidasesCefotaximeSulbactamClavulanic AcidsFusobacterium InfectionsAerobiosisPeptococcusPlasmidsBacteriological TechniquesLincomycinClavulanic AcidTicarcillinBacterial CapsulesEubacteriumBase SequencePenicillin GCarbenicillinGerm-Free LifeR Factors