Which lymphatic tissue is associated with mucous membranes and is called mucosa-associated lymphatic tissue, or MALT?

MALT or mucosa-associated lymphoid tissue refers to a bundle of lymphatic cells, known as lymphatic nodules, situated inside the mucous membranes, which envelopes the respiratory, gastrointestinal, urinary, and reproductive tracts. These nodules comprise macrophages and lymphocytes that fight against the entering bacteria and other pathogens, which moves into these pathways along with air, food, or urine. These nodules can be grouped together in clusters or can be present solitary.

The major clusters of lymphatic nodules comprise adenoids, tonsils, and Peyer's patches.