Peyer's patch is the lymphatic component serves to monitor the bacterial load in the intestines.
Peyer's patches are lymphoid structures throughout the intestine (mainly the small intestine) surrounded by specialized epithelium that stand out for their immune surveillance of what enters the intestine from outside.
These plates of lymphoid tissue are found on the wall of the ileum, making a slight prominence in the intestinal lumen.
M cells are specialized in the uptake of luminal antigens, they are located on Peyer's patches and transport microorganisms from the intestinal lumen to T lymphocytes and other antigen cells where they are activated and lead to the secretion of antibodies.
Therefore, we can conclude that Peyer's patches are lymphoid aggregates specialized in identifying food-associated antigens that pass through the digestive tract.
