Gut-associated Lymphoid Tissue (GALT) is a crucial part of the immune system located in the gastrointestinal tract. It includes structures like Peyer’s patches, mesenteric lymph nodes, and isolated lymphoid follicles. GALT helps protect the body from pathogens that enter through food and drink. GALT plays a vital role in the immune response by producing immune cells such as B cells and T cells. These cells help identify and eliminate harmful microorganisms while maintaining tolerance to beneficial gut bacteria. This balance is essential for overall gut health and immune function.