CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Small intestine lining. Light micrograph of a section through the healthy mucosal lining of the small intestine, showing Paneth cells. Paneth cells contain large granules consisting of several anti-microbial compounds and other compounds known to be important in immunity and host-defence. When exposed to bacteria or antigens, Paneth cells secrete these compounds into the intestines.
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