A delicate balance: Learning new ways that gut microbes educate the immune system

An immune system that mistakes our good gut bacteria for an enemy can cause a dangerous type of inflammation in the intestines called colitis. An immune system that looks the other way while gut microbes spill past their assigned borders is equally dangerous. Understanding how the immune system learns to make a brokered peace with its microbial residents, called the microbiota, is therefore an important area of research.

source https://www.sciencedaily.com/releases/2021/05/210512164011.htm