1. Bloch, K., and Schoenheimer, R. (1941). J. biol. Chem., 138, 167.
2. Borsook, H., and Dubnoff, J. W. (1940). Ibid., 132, 559.
3. Borsook, H., and Dubnoff, J. W. (1941). Ibid., 138, 389.
4. Borsook, H., and Dubnoff, J. W. (1947). Ibid., 169, 247.
5. Lilly, J. C., and Marriott, W. (1941). Ibid., 138, 405.