RT Journal Article SR Electronic T1 The biology of epithelial cell populations JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 865 OP 866 DO 10.1136/gut.26.8.865-a VO 26 IS 8 A1 Wingate, David YR 1985 UL http://gut.bmj.com/content/26/8/865.2.abstract AB