Researchers find gut bacteria teaches immune cells to see them as friendly

(Medical Xpress) -- Most people know that the gut (human or otherwise) has bacteria in it that helps in the proper digestion of food. But how these bacteria manage to evade destruction by the immune system has been a mystery. Now, new research by a group working out of Washington University in St. Lois, as described in their paper published in the journal Nature, shows that such bacteria mange to survive by teaching T cells to see them as friends, rather than foes.

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