1. N. Haneji, K. Yanagi, H. Higashiyama, I. Saito, Y. Hayashi, Department of Pathology, Tokushima University School of Dentistry, 3 Kuramotocho, Tokushima 770, Japan.
2. T. Nakamura and H. Sugino, Institute for Enzyme Research, University of Tokushima, 3 Kuramotocho, Tokushima 770, Japan.
3. K. Takio, Division of Biomolecular Characterization, The Institute of Physical and Chemical Research, Wako, Saitama 351-01, Japan.
4. S. Noji, Division of Biological Industry, University of Tokushima, Jyosanjima, Tokushima 770, Japan.