1. Department of Structural Pathology, Institute of Nephrology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
2. Cooperative Laboratory of Electron Microscopy; Niigata University; Niigata Japan
3. Institute for Clinical Research; Niigata National Hospital; Niigata Japan
4. Department of Physiology, Faculty of Veterinary Medicine; Suez Canal University; Ismailia Egypt