title: Periodontal disease and resistance factor by secretory IgA.
mesh_terms: D003773:Dental Plaque / Q000276:immunology*; D006801:Humans; D007071:Immunoglobulin A, Secretory / Q000032:analysis*; D010510:Periodontal Diseases / Q000276:immunology*
chemical_list: D007071:Immunoglobulin A, Secretory