1. Parent K, Barrett J, Wilson ID. (1971) Investigation of the pathogenic mechanisms in regional enteritis with in vitro lymphocyte cultures. Gastroenterology 61:431–439
2. Sachar DB, Taub RN, Brown SM, Present DH, Korelitz BI, Janowitz HD. (1973) Impaired lymphocyte responsiveness in inflammatory bowel disease. Gastroenterol. 64:203–209
3. Guillou PJ, Brenman TG, Giles GR. (1973) Lymphocyte transformation in the mesenteric lymph nodes of patients with Crohn’s disease. Gut 14:20–24
4. Walker JG, Greaves MF. (1969) Delayed hypersensitivity and lymphocyte transformation in Crohn’s disease and proctocolitis. Gut 10:414
5. Cave D, Brooke BN. (1973) A study of lymphocyte function in Crohn’s disease using the mitotic index. Brit.J.Surg. 60:319