Chapter 23, Problem 4RQ

Summary Introduction

To review:

The reason behind commensal organisms being proven beneficial to the host.

Introduction:

The human body is colonized by numerous microbiota in different parts of the body that assist in the process of digestion. They also prevent colonization by more harmful pathogenic bacteria. As bacteria in the microbiota are of different species, they can assist various functions. The areas of the body exposed to the external environment are especially susceptible to harmful infection and they need to be protected by natural microbiota