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abstractpubmed· Abstract 2016 Nov/Dec· item PMID:27741163
Gut Microbiota and Obesity. Intestinal microbiota is composed by symbiotic innocuous bacteria and potential pathogens also called pathobionts. The human gut normally hosts roughly 1014 bacterial organisms of up to 1000 different species. The genome size of this microbial organ, collectively named microbiome, exceeds the size of the human nuclear genome by 2 orders of magnitude.