1. National Institute of Bioscience and Human-Technology; Higashi 1-1 Tsukuba Ibaraki 305 Japan
2. Nagase Biochemicals Ltd.; Fukuchiyama Kyoto 620 Japan
3. ; Suntory Ltd.; Simamoto-cho Osaka 618 Japan
4. ; Marine Biotechnology Institute; Kamaishi Iwate 026 Japan