title: Letter: Decreased serum-IgA in myasthenia gravis.
mesh_terms: D001327:Autoimmune Diseases / Q000150:complications; D004406:Dysgammaglobulinemia / Q000209:etiology*; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D007153:Immunologic Deficiency Syndromes / Q000209:etiology*; D009157:Myasthenia Gravis / Q000209:etiology / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A