Peyer’s patches aggregations of lymphoid tissue usually found in the lowest portion of the small intestine, the ileum.
Peyer’s patches are more numerous in younger individuals and become less prominent with age. Approximately 30 to 40 patches or bundles occur in an individual’s intestine.
The Peyer’s patches contain high concentrations of white blood cells that help protect the body from infection and disease. Digestive tracts, are constantly exposed to a wide variety of harmful microorganisms. Peyer’s patches, detect antigens such as bacteria and toxins and mobilize antibodies.« Back to Glossary Index