CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Collagenous colitis. Light micrograph of a section through a colon (large intestine) affected by collagenous colitis. Collagenous colitis (inflammation of the colon) is an inflammatory bowel disease affecting the colon (large intestine) that is characterised by the deposition of collagen in the lamina propria, the area of connective tissue between colonic glands. It causes watery intermittent diarrhoea, usually without rectal bleeding, with more than 10 bowel movements per day.
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