1. Takagi, M., Biochim. Biophys. Acta, 66, 328 (1963).
2. Yoshizawa, T., and Wald, G., Nature, 197, 1279 (1963).
3. Sekoguti, Y., Takagi, M., and Kito, Y., Ann. Rep. Sci. Works, Fact. Sci. Osaka Univ., 12, 67 (1964).
4. Kauzmann, W., Adv. Protein Chem., 14, 1 (1959).
5. Hamaguchi, K., and Kurono, A., J. Biochem., 54, 111 (1963).