#X-ray_film  photographic film used to make X-ray pictures
  supertype:  #photographic_film__film  photographic material consisting of a base of celluloid covered with a photographic emulsion; used to make negatives or transparencies
  subtype:  #bitewing  a dental X-ray film that can be held in place by the teeth during radiography

No statement uses or specializes #X-ray_film; click here to add one.