1. Departments of Physiology (M.I., W.T., J.A.), University of Yamanashi, Yamanashi 409-3898, Japan
2. Division of Blood Transfusion (S.I., S.S.), Shinshu University Hospital, Nagano 390-8621, Japan
3. Biochemistry (S.M.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi 409-3898, Japan