〇Hiroki Toyoda¹, Tsutomu Kawano¹, Hajime Sato¹, Takafumi Kato¹ (1.Dept of Oral Physiol, Grad Sch Dent, Osaka univ, Suita, Japan )

〇Yuji Suehiro¹, Shohei Mitani^1,2 (1.Dept. of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan, 2.Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan)