Tuesday, February 9, 2010

Celiac Disease: Eating Away at You?

The immune system learns to recognize the antigens from the body’s own cells as “self” and also to tolerate the many “nonself” tags on beneficial intestinal microbes and food particles. But in some people, the immune cells misread the antigens attached to HLA, mistaking, say, pollen for a cold virus or gluten for a toxin. Then they send out a faulty danger signal that makes their body’s own cells look suspicious, summoning other immune cells to attack the body’s tissue.

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