The section of the small intestine that comprises the first two fifths beyond the duodenum and that is larger, thicker-walled, and more vascular and has more circular folds than the ileum. (BRENDA Tissue and Enzyme Source Ontology, BTO_0000657)
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17 genes co-occuring with the biological term jejunum in literature-supported statements describing functions of genes from the GeneRIF Biological Term Annotations dataset.