2) M. Kochi, S. Takeuchi, T. Mizutani, K. Mochizuki and Y. Matsumoto, presentation of proffered paper to 12th International Cancer Congress, Buenos Aires, 5-11-October-1978 has been accepted.
3) Y. Anraku, J. Biol. Chem., 242, 793-800 (1967).
4) K. Sakaguchi and K. Ishikawa, Annu. Rep. Mitsubishi-Kasei Institute of Life Sciences, 1, 14 (1971-1972).