title: Recurrent aphthae.
mesh_terms: D001327:Autoimmune Diseases / Q000150:complications; D002374:Catalase / Q000378:metabolism; D006566:Herpesviridae Infections / Q000150:complications; D006801:Humans; D006967:Hypersensitivity / Q000150:complications; D012008:Recurrence; D013281:Stomatitis, Aphthous / Q000209:etiology*; D009626:Terminology as Topic
chemical_list: D002374:Catalase