title: Letter: Local immunity and ulcerative colitis.
mesh_terms: D001798:Blood Proteins / Q000032:analysis; D003093:Colitis, Ulcerative / Q000097:blood / Q000276:immunology* / Q000473:pathology; D003165:Complement System Proteins; D003601:Cytotoxicity Tests, Immunologic; D006801:Humans; D007136:Immunoglobulins / Q000302:isolation & purification*; D007413:Intestinal Mucosa / Q000473:pathology; D008867:Microtomy
chemical_list: D001798:Blood Proteins; D007136:Immunoglobulins; D003165:Complement System Proteins