RT Journal Article SR Electronic T1 The alpha-smooth muscle actin promoter: a useful tool to analyse autocrine and paracrine roles of mesenchymal cells in normal and diseased bowel JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 320 OP 322 DO 10.1136/gut.42.3.320 VO 42 IS 3 A1 P K LUND YR 1998 UL http://gut.bmj.com/content/42/3/320.abstract AB