title: Recurrent aphthous ulceration--an update.
mesh_terms: D002710:Chlorhexidine / Q000627:therapeutic use; D004205:Cromolyn Sodium / Q000627:therapeutic use; D006801:Humans; D007978:Levamisole / Q000627:therapeutic use; D012008:Recurrence; D013256:Steroids / Q000008:administration & dosage / Q000627:therapeutic use; D013281:Stomatitis, Aphthous / Q000145:classification / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology / Q000473:pathology; D013752:Tetracycline / Q000627:therapeutic use
chemical_list: D013256:Steroids; D007978:Levamisole; D013752:Tetracycline; D004205:Cromolyn Sodium; D002710:Chlorhexidine