Microbiota refers to all of the microorganisms (e.g., bacteria, viruses, and fungi) found in a specific environment, and its diversity (i.e., variety) differs from person to person (Ursell et al., 2012; Marchesi & Ravel, 2015). In this course, we will focus on the microbiota (primarily bacteria) that live in the large intestine of the GIT.
