Gut Associated Lymphoid Tissue (GALT) is primarily located in which layer of small intestine?: (A) Lamina Propria, (B) Submucosa, (C) Muscularis, (D) Serosa
Answer is A. GALT is composed of aggregated tissue in the form of peyer's patches and lymphnode follicles, and non-aggregated cells in Lamina propria and intraepitheial regions of small intestine. Ref: The Immunomodulatory Effects of Dietary Fibers and Prebiotics in The Gastrointestinal Tract By Teresa M. Paeschke, William R. Aimutis, Chapter 3; Nondigestible Carbohydrates and Digestive Health, Page 1974