Twin study indicates loss of interaction between microbiota and mucosa of patients with ulcerative colitis.

Lepage P, Häsler R, Spehlmann M E, Rehman A, Zvirbliene A, Begun A, Ott S, Kupcinskas L, Doré J, Raedler A, Schreiber S (2011); Gastroenterology., 141(1):227-36. doi: 10.1053/j.gastro.2011.04.011