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Over a million people in the United States have some form of Inflammatory Bowel Disease or IBD. It can be caused by intestinal bacteria, environment or genetics. One thing is for sure, the lining of the intestines don't work correctly because the cells have been disturbed by one of these things. A common finding in Crohn's and IBD is that a molecule called TNF is elevated, and starts the inflammation process. Researchers still don't know what signals the TNF to go up, but maybe they can turn it off with another molecule.

Highlighting role of animal research in human health.  A visually appealing website with an array of research summaries.