1. Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan 2Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
2. Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan
3. Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan 4Electron Microscope Laboratory, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
4. Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
5. Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
6. Department of Ophthalmic Oncology, National Cancer Center Hospital, Tokyo, Japan