1. Hinshelwood, C., and Caldwell, M. L., J. Chem. Soc., 1415 (1950). Sevag, M. G., Smolens, J., and Lackman, D. B., J. Biol. Chem., 134, 523 (1940). Seibert, E. A., ibid., 133, 593 (1940). Hoagland, M. B., J. Exp. Med., 72, 139 (1940).
2. The occurrence of polyploidy or of polynuclear cells, for example, will upset this relationship; for example, see The Nucleic Acids, edit. by Chargaff, E., and Davidson, J. N., 1 (Academic Press, Inc., New York, 1955).
3. Dische, Z., Mikrochemie, 8, 4 (1930).
4. Dische, Z., in The Nucleic Acids, edit. by Chargaff, E., and Davidson J. N., 1 (Academic Press, Inc., New York, 1955).
5. Davidson, J. N., The Biochemistry of the Nucleic Acids, 60 (Methuen Monograph, London, 1950). Pirie, N. W., Brit. J. Exp. Path., 17, 405 (1936).