Affiliation: | ;Laboratory of Physiological Chemistry and Metabolism, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo 113-8654, ;Laboratory of Aquatic Molecular Biology and Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657 and ;Department of Marine Bioresources Chemistry, Faculty of Fisheries, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan |