Representative example of a portion of the lower NHP intestinal tract and of the sigmoid colon resection used for processing
(A) Identification of the anus, rectum, sigmoid colon and the distal portion of the descending colon.
(B) Sigmoid colon resection.
(C–G) Initial steps of the protocol: removal of the external fat (C); opening of the intestinal tube (D); view of the mucosa from the luminal side (E); view from the muscularis side (F); removal of the muscular layer (G).