1. Division of Biochemical Pharmacology, Department of Basic Medical Research, Ehime University Graduate School of Medicine, Toon City, Ehime, Japan
2. Division of Functional Histology, Department of Functional Biomedicine, Ehime University Graduate School of Medicine, Toon City, Ehime, Japan
3. Milk Science Research Institute, Megmilk Snow Brand Co. Ltd., Kawagoe, Saitama, Japan