A study of species distribution of numerically predominant Bacteroidales order isolates in feces of healthy people aged 1-33 years was accomplished using a combination of amplified ribosomal DNA restriction analysis (ARDRA) and 16S ribosomal DNA (rDNA) sequencing. It was found that the majority of isolates in all age groups belonged to species B. xylanisolvens, B. vulgatus, and B. uniformis. Members of genera Alistipes, Parabacteroides, Odoribacter, Barnesiella, and Prevotella were also detected frequently.
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