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About the Cover

Cover Figure


COVER A colored barium x-ray image of the colon of a patient in the early stages of Crohn's disease. A special section explores the diverse biology of our gut, including the abundant yet largely unknown microorganisms it harbors, its normal functions of digestion and delivery of nutrients, and diseases to which it is prone. See page 1895. [Image: Gjlp/Photo Researchers Inc.]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)