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About the Cover


The lamina propria of the rat duodenum, showing immune cells that unexpectedly express targets for antiulcer drugs. Plasmocytes that produce immunoglobulin G are shown in green, and cells that express M1 acetylcholine receptors are red; scattered immunoglobulin G-producing cells that also express M1 acetycholine receptors are shown in yellow. See page 1662 and the News report on page 1579. [Photo: Ricardo Dreyfuss]


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