Assertion: bacteria's number | /r/AtLocation | the gut
Facets:
Source sentences:
text: In humans and most animals the largest number of bacteria exist in the gut, and a large number on the skin.
text: There are about 10 times more microbial cells than human cells in our bodies; the highest numbers of microbial species are found in the gut, according to microbiologist David A. Relman's 2012 article in Nature.