Lab 14 - Image 27

Rabbit abdominal viscera. 1, small intestines; 2, ileum; 3, sacculus rotundous; 4, cecum; 5, cecal appendix; 6, ascending colon; 7, descending colon. The sacculus rotundus and cecal appendix are rich in B lymphocytes (see “The enigma of the lower gut-associated lymphoid tissue (GALT)” Butler & Sinkora, J Lymphocyte Biol, 94:259-270; 2013).