<prompt> Gut Associated Lymphoid Tissue GALT is primarily located in which layer of small intestine?Lamina PropriaSubmucosaMuscularisSerosa  <response>: GALT is composed of aggregated tissue in the form of peyers 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 