Answer:
Peyer’s patches
Explanation:
Peyer's patches are present in the ileum region of small intestine , these are the small mass of the lymphatic tissues or the lymphoid nodules.
The main and important function of Peyer's patch , also known as the aggregated lympoid is -
They plays an important part in the immune system , by avoiding the growth of the pathogenic bacteria in intestines , monitoring the intestinal bacteria populations .
