title: Immunology of the human gastrointestinal tract in health and disease--a brief review.
mesh_terms: D000917:Antibody Formation; D004064:Digestive System / Q000276:immunology*; D005767:Gastrointestinal Diseases / Q000276:immunology*; D006801:Humans; D007111:Immunity, Cellular; D007413:Intestinal Mucosa / Q000276:immunology