Lichen planus.
D003176:Complement C3 / Q000276:immunology; D005455:Fluorescent Antibody Technique; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D008010:Lichen Planus / Q000175:diagnosis* / Q000188:drug therapy / Q000209:etiology; D009260:Nail Diseases / Q000209:etiology; D012867:Skin / Q000473:pathology; D013256:Steroids / Q000627:therapeutic use; D013601:T-Lymphocytes / Q000276:immunology
D003176:Complement C3; D007074:Immunoglobulin G; D013256:Steroids