Fecal Microbiome Does Not Represent Whole Gut Microbiome

Figure 1

The microbial diversity at each location of the GI tract by α-diversity analysis. (a) The relative abundance of microbial phyla at each location of GI tract and feces. (b) Species richness and diversity were measured by the ACE and Shannon (). (c) The relative abundances of the predominant intestinal microbes at phylum level which are Firmicutes, Proteobacteria, Actinobacteria, Cyanobacteria, Fusobacteria, and Bacteroidetes. The sampling locations within the GI tract were determined based on the anatomical feature: the stomach, the duodenum (small intestine_1), the jejunum (small intestine_2 ~ small intestine_5), the ileum (small intestine_6), the cecum (large intestine_1), the colon (large intestine_2 ~ large intestine_6), and the rectum (large intestine_7). The anatomical differences between each location are shown in Figure S1.

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