title: Immunoglobulin A: strategic defense initiative at the mucosal surface.
mesh_terms: D000818:Animals; D000941:Antigens / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D001659:Biliary Tract / Q000276:immunology; D001693:Biological Transport, Active; D004705:Endocytosis; D006801:Humans; D007109:Immunity; D007070:Immunoglobulin A / Q000276:immunology* / Q000378:metabolism; D008099:Liver / Q000276:immunology; D008954:Models, Biological; D009092:Mucous Membrane / Q000276:immunology; D011487:Protein Conformation; D012635:Secretory Component; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000941:Antigens; D007070:Immunoglobulin A; D012635:Secretory Component