Hiraku Sasaki¹, Hidehiro Ueshiba², Naoko Yanagisawa², Hiroki Ishikawa³, Fumio Ike⁴ (¹Dept. Health Sci., Sch. Health Sci., Sports Sci., Juntendo Univ., ²Dept. Microbiol. Immunol. Sch. Med., Tokyo Women’s Med. Univ., ³Dept. Microbiol. Immunol., Sch. Med., Showa Univ., ⁴RIKEN BRC)