1. Laboratory of Nutrition, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
2. International Education and Research Center for Food Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
3. School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan
4. Laboratory of Functional Morphology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
5. Institute for Bee Products and Health Science, Yamada Bee Company, Inc., Okayama 708-0393, Japan