title: Letter: IgAs/iGE in digestive secretions.
mesh_terms: D004386:Duodenum / Q000378:metabolism; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D007071:Immunoglobulin A, Secretory / Q000032:analysis*; D007073:Immunoglobulin E / Q000032:analysis*; D007419:Intestinal Secretions / Q000276:immunology*; D007583:Jejunum / Q000378:metabolism
chemical_list: D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory; D007073:Immunoglobulin E