title: Impaired local immune system in vitamin A deficiency.
mesh_terms: D000818:Animals; D006801:Humans; D007107:Immune System / Q000276:immunology; D007071:Immunoglobulin A, Secretory / Q000378:metabolism; D008213:Lymphocyte Activation; D012635:Secretory Component / Q000096:biosynthesis; D014802:Vitamin A Deficiency / Q000276:immunology*
chemical_list: D007071:Immunoglobulin A, Secretory; D012635:Secretory Component