The walls of the intestine are made up of layers of smooth muscle and tissue. Villi are found in the innermost layer of your intestine, known as the mucosa. Epithelial cells make up the villi ...

Pathogen-fighting immune cells called tissue-resident memory CD8 T cells (TRM cells) go through a surprising transformation—and relocation—as they fight infections in the small intestine.

I’ve been diagnosed with silent celiac disease at the late age of 62, but I probably had it for decades. (It may have led to ...