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ISME J. 2009 Jun;3(6):745-51. doi: 10.1038/ismej.2009.19. Epub 2009 Mar 19.

Microbiomic analysis of the bifidobacterial population in the human distal gut.

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Department of Genetics, Biology of Microorganisms, Anthropology and Evolution, University of Parma, Parma, Italy.


One of the most complex microbial ecosystems is represented by the microbiota of the human gastrointestinal tract (GIT). Although this microbial consortium has been recognized to have a crucial effect on human health, its precise composition is still not fully established. Among the GIT bacteria, bifidobacteria represent an important commensal group whose presence is often associated with health-promoting effects. In this work, we assessed the complexity of the human intestinal bifidobacterial population by analysing the diversity of several 16S rRNA gene-based libraries. These analyses showed the presence of novel bifidobacterial phylotypes, which had not been found earlier and may thus represent novel taxa within the genus Bifidobacterium.

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