1. 1) Yamaguchi, H., Okubo, Y., and Hazama, F.: Proc. Japan Acad., 41, 316 (1965).
2. 2) Race, R. R., and Sanger, Ruth: Blood Groups in Man (4th ed.). Blackwell Scientific Publications, Oxford (1962).
3. 3) Seyfried, H., Walewska, I., and Werblinska, B.: Vox Sang., 9, 268 (1964).
4. 4) Yasuda, J., Amano, H., Matsunaga, K., and Hayama, K.: Summaries of Reportsof the 14th Congress of Japan Society of Blood Transfusion, p. 22 (1966).
5. 5) Kitahama, M.: Discussion on 4) at the above Congress.