Bacteroides InfectionsBacteroidesAbortion, SepticBacteroides fragilisClindamycinBacteria, AnaerobicGram-Negative BacteriaPrevotella melaninogenicaAnaerobiosisPeptococcusBacteriaVeillonellaFusobacteriumBacteria, AerobicPeptostreptococcusBacterial InfectionsGram-Negative Anaerobic BacteriaEubacteriumGram-Positive BacteriaAnti-Bacterial AgentsGram-Negative Bacterial InfectionsPyruvate SynthaseMicrobial Sensitivity TestsBacteriological TechniquesClostridiumAnti-Infective AgentsCulture MediaAerobiosisRNA, Ribosomal, 16SMetronidazolePhylogenyDNA, BacterialGram-Negative Aerobic BacteriaMolecular Sequence DataDNA, RibosomalBacteremiaSequence Analysis, DNAEnterobacteriaceaePhytochemicalsEscherichia coliBacterial Proteins