Aggregates of T and B lymphocytes found in all mucous membranes, a line of defense against infection. Examples include Peyer’s patches in the small intestine and lymph nodules in the colon, trachea, and bronchi. MALT contains CD4+ and CD8+ T cells and activated B cells and may occasionally undergo malignant transformation into lymphomas.
The acronym for mucosa-associated lymphoid tissue is MALT. This tissue is a component of the lymphatic system, which plays a role in safeguarding the body against infections. MALT is situated within the digestive tract, specifically in regions like the tonsils and in specialized areas known as Peyer’s patches located in the small intestine.