PerspectiveMicrobiology

Breaking the Barrier Between Commensalism and Pathogenicity

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Science  11 Aug 2006:
Vol. 313, Issue 5788, pp. 772-773
DOI: 10.1126/science.1131752

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Summary

Harmless bacteria in the intestinal tract secrete a peptide that may enhance their survival. The same peptide causes disease when secreted by pathogenic bacteria outside the intestine.