1. Animal Research Laboratory; Bioscience Education-Research Support Center; Akita University; Akita Japan
2. Animal Facility for Aging Research; National Institute for Geriatrics and Gerontology; Obu Japan
3. Laboratory Animal Science; Division of Experimental Animals; Graduate School of Medicine; Nagoya University; Nagoya Japan
4. The Primate Research Facility; National Institute of Neuroscience; National Center of Neurology and Psychiatry; Kodaira Japan
5. Center of Advanced Medicine for Dental and Oral Diseases; National Center for Geriatrics and Gerontology; Obu Japan
6. Toxicology Division; Institute of Environmental Toxicology; Joso Japan