title: Introduction to the structural and cellular aspects of the secretory IgA system.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D006801:Humans; D007070:Immunoglobulin A / Q000096:biosynthesis; D007071:Immunoglobulin A, Secretory / Q000096:biosynthesis; D007144:Immunoglobulin J-Chains; D007137:Immunoglobulin alpha-Chains; D008221:Lymphoid Tissue / Q000276:immunology; D012463:Saliva / Q000276:immunology; D012635:Secretory Component
chemical_list: D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory; D007144:Immunoglobulin J-Chains; D007137:Immunoglobulin alpha-Chains; D012635:Secretory Component