title: The secretory immune system, a brief review.
mesh_terms: D000818:Animals; D004064:Digestive System / Q000276:immunology*; D006168:Guinea Pigs; D006801:Humans; D007106:Immune Sera; D007120:Immunochemistry; D007074:Immunoglobulin G / Q000378:metabolism; D007136:Immunoglobulins; D011817:Rabbits
chemical_list: D007106:Immune Sera; D007074:Immunoglobulin G; D007136:Immunoglobulins