1. Inter alia Brachet, J., in Chargaff, E., and Davidson, J. N., “The Nucleic Acids”, Vol. 2, Chap. 28 (Academic Press, Inc., New York, 1955). Gale, E. F., in “Enzymes : Units of Biological Structure and Function (A Henry Ford Hospital Symposium)”, p. 49 (Academic Press, Inc., New York, 1956). Spiegelman, S., ibid., p. 67.
2. White, J. C., Leslie, I., and Davidson, J. N., J. Pathol. Bacteriol., 66, 291 (1953).
3. Mann, T., “The Biochemistry of Semen” (Methuen and Co., Ltd., London, 1954).
4. Mauritzen, C. M., Roy, A. B., and Stedman, E., Proc. Roy. Soc., B, 140, 18 (1952).
5. Daoust, R., and Clermont, Y., Amer. J. Anat., 96, 255 (1955).