1. Tea Science Center, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
2. Production Center for Experimental Animals, Japan SLC, Inc., 85 Ohara, Kita-ku, Hamamatsu 433-8102, Japan
3. R & D, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo 131-8501, Japan
4. Biological Science Research, Kao Corporation, Akabane, Ichikai-machi, Haga-gun, Tochigi 321-3497, Japan