Mast cells (MCs) contribute to the increased permeability associated with intestinal delayed-type hypersensitivity (DTH) responses in the mouse: A.D. Kraneveld, A.Sj. Koster, B.K. Wershil. The Dept. of Pharmacology, Utrecht University, Utrecht, the Netherlands, Div. of Exp. Pathology, Beth Israel Hosp, The Combined Program in Pediatric GI/Nutrition, Harvard Medical School, Boston, MA