1. Laboratory of Animal Science; Graduate School of Life and Environmental Sciences; Kyoto Prefectural University; Kyoto Japan
2. Kyoto Institute of Nutrition and Pathology; Kyoto Japan
3. Laboratory of Nutritional Science for Animals; Division of Applied Biosciences; Graduate School of Agriculture; Kyoto University; Kyoto Japan
4. Department of Microbiology; Division of Immunology and Pathobiology; Dental Research Center; Nihon University School of Dentistry; Tokyo Japan