Fig. 1

Difference in dietary selenium intake altered the composition of the intestinal microbiota. Fecal samples were collected from the high- and low-selenium groups and the intestinal microbiota were examined by 16 S rRNA sequencing. (A) Venn diagram of OTUs showing microbiota differences high- and low-selenium groups, with altered strains altered and overlap. (B) Microbial communities were examined based on phylum, class, order, family, genus, and species in the high- and low-selenium areas. (C) Relative abundance of predominant bacteria at the phylum level. (D) Relative abundance of predominant bacteria at the genus level