RT Journal Article SR Electronic T1 Molecular mechanisms of probiotic action: it's all in the strains! JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1026 OP 1027 DO 10.1136/gut.2011.241026 VO 60 IS 8 A1 Fergus Shanahan YR 2011 UL http://gut.bmj.com/content/60/8/1026.abstract AB