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A subacute chronic gastrointestinal disorder, involving the small intestine, characterized by patchy deep ulcers that may cause fistulas and a narrowing and thickening of the bowel.


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More than 23.5 million Americans are affected by an autoimmune disease. Biopharmaceutical researchers are using new approaches and teaming up with the NIH and non-profits to combat diseases like lupus and rheumatoid arthritis.