IL15 and inflammatory bowel disease: The percentage of IL-15-cells resulted significantly higher in the mucosa of CD and UC patients compared to non-IBD controls (CD: median 3.41, range 1.4–9.9%; UC: 6.14, 2.3–11.8%;HC: 2.3, 0–6.6%, p<0.03,UC vs HC; p<0.05, CD vs HC), Fig 1A and 1B.