title: The efficacy of a new retinoid (Ro 10-9359) in lichen planus.
mesh_terms: D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008010:Lichen Planus / Q000188:drug therapy*; D008297:Male; D014212:Tretinoin / Q000031:analogs & derivatives* / Q000627:therapeutic use; D014801:Vitamin A / Q000031:analogs & derivatives*
chemical_list: D014801:Vitamin A; D014212:Tretinoin