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small intestine

^ http://purl.obolibrary.org/obo/XAO_0000130


A part of the alimentary system and principal organ of digestion, comprising the duodenum and ileum and characterized by longitudinal folds. In the tadpole it is a long simple tube with a single layer of cuboidal epithelial cells. [ http://www.ncbi.nlm.nih.gov/pubmed/15738398 ]