[Immune mechanisms and lesions of the gastrointestinal system].
D001402:B-Lymphocytes / Q000276:immunology; D003093:Colitis, Ulcerative / Q000276:immunology; D004064:Digestive System / Q000276:immunology*; D006801:Humans; D007071:Immunoglobulin A, Secretory / Q000096:biosynthesis / Q000276:immunology; D007136:Immunoglobulins / Q000096:biosynthesis; D007413:Intestinal Mucosa / Q000166:cytology; D008221:Lymphoid Tissue / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology
D007071:Immunoglobulin A, Secretory; D007136:Immunoglobulins