A cooling apparatus includes a cooling module having an electrically-driven cooling device. More specifically, the present invention relates to a method of loading a stent onto a balloon and mounting the stent balloon assembly onto a catheter. The invention provides nucleic acid comprising a transcription initiation region capable of directing expression predominantly in the roots of a plant, and a sequence which encodes an anti-nematode protein. Location-related information is information related to location-designating information.