RT Journal Article SR Electronic T1 Crohn's disease--a permeability disorder of the tight junction? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1621 OP 1624 DO 10.1136/gut.29.12.1621 VO 29 IS 12 A1 Hollander, D YR 1988 UL http://gut.bmj.com/content/29/12/1621.abstract AB