1. Department of Anatomy and Neuroscience; Graduate School of Medical Sciences; Kyushu University; Fukuoka 812-8582 Japan
2. Department of Neurology; Neurological Institute; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
3. Department of Neuroimmunology; Research Institute of Environmental Medicine; Nagoya University; Nagoya Japan
4. Department of Neurology and Stroke Medicine; Yokohama City University Graduate School of Medicine; Yokohama Japan
5. Department of Biochemistry; Nagoya University Graduate School of Medicine; Nagoya Japan