Warren Strober is in the Mucosal Immunity Section of the Laboratory of Host Defense, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland 20892, USA. wstrober@niaid.nih.gov
Ligands from commensal microflora can stimulate Toll-like receptors on the surface of intestinal epithelial cells. Work in mice now assigns a surprising role to such signals: cell survival and repair during inflammation.
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