Interleukin 18 is a potent proliferative factor for intestinal mucosal lymphocytes in Crohn’s disease.

Kanai T, Watanabe M, Okazawa A, Nakamaru K, Okamoto M, Naganuma M, Ishii H, Ikeda M, Kurimoto M, Hibi T. Gastroenterology. 2000 Dec;119(6):1514-23.