ISM / SCIENCE PHOTO LIBRARY ISM / SCIENCE PHOTO LIBRARY
Crohn's disease. Light micrograph of a section through the lining of the colon (large intestine) of a patient with Crohn's disease. This is a chronic inflammatory disorder of the intestines that causes ulceration and thickening of the lining. This is the tuberculoid form of the disease, which is characterised by the presence of epitheloid granulomas. One of these (dark pink oval) is seen at upper right. The cause of the disease is not clear, although it may be due to either an overactive or underactive immune system. There is no cure, although anti-inflammatory drugs and surgical removal of badly affected parts of the gut are often used.
Model release not required. Property release not required.