Human colonic intraepithelial lymphocytes from patients with inflammatory bowel disease fail to down--regulate proliferative responses of primed allogeneic peripheral blood mononuclear cells after rechallenge with antigens. - Dalton, H. R.; Dipaolo, M. C.; Sachdev, G. K.; Crotty, B.; Hoang, P.; Jewell, D. P. (Clinical & Experimental Immunology, 1993)