Intestinal B cells in the red-eared slider turtle,Trachemys scripta: Anatomical distribution and implications for ecological interactions with pathogenic microbes

Disease is a significant threat in the global decline of reptile species. Many aquatic reptiles live in habitats with high levels of opportunistic microbial pathogens, yet little is known about their immune system. Gut‐associated lymphoid tissue is vital for protection against ingested pathogens and maintenance of normal gut microbiota. In mammals, gut mucosal immunity is well‐characterized and mucosal surfaces are coated in protective...