title: Intraoral lichen planus simplex: an ultrastructure study.
mesh_terms: D003094:Collagen; D006801:Humans; D008010:Lichen Planus / Q000175:diagnosis / Q000382:microbiology / Q000473:pathology*; D008854:Microscopy, Electron; D009059:Mouth Diseases / Q000175:diagnosis / Q000382:microbiology / Q000473:pathology*; D009336:Necrosis / Q000382:microbiology
chemical_list: D003094:Collagen