The wall of the bursa of Fabricius was made up of three tunics. The outermost is tunica serosa, the middle tunica muscularis and inner tunica mucosa which consisted of lining epithelium and lamina propria filled with lymphoid follicles. The lining epithelium was made up of pseudostratified columnar epithelium and is divided into two types i.e. follicle associated epithelium (FAE) or epithelial tuft and interfollicular epithelium (IFE). Lymphoid follicles consisted of an outer thin cortex made up of densely packed lymphoblast and lymphocytes with few macrophages and inner medulla was made up of lymphocytes and loosely arranged reticulo-epithelial cells.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.