title: Aging, gastrointestinal infections, and mucosal immunity.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D000818:Animals; D000917:Antibody Formation; D004064:Digestive System / Q000166:cytology / Q000276:immunology*; D005753:Gastric Mucosa / Q000276:immunology; D005767:Gastrointestinal Diseases / Q000276:immunology*; D006801:Humans; D007111:Immunity, Cellular; D007071:Immunoglobulin A, Secretory / Q000096:biosynthesis; D007136:Immunoglobulins / Q000096:biosynthesis; D007239:Infections / Q000276:immunology*; D007413:Intestinal Mucosa / Q000276:immunology; D008221:Lymphoid Tissue / Q000276:immunology; D008875:Middle Aged; D009061:Mouth Mucosa / Q000276:immunology; D010581:Peyer's Patches / Q000276:immunology; D010587:Phagocytosis; D010950:Plasma Cells / Q000378:metabolism
chemical_list: D007071:Immunoglobulin A, Secretory; D007136:Immunoglobulins