04 December 1992
Vol 258, Issue 5088

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]