1. Bergström, S., and Borgström, B., in Progress in the Chemistry of Fats and Other Lipids, edit. by Holman, R. T., Lundberg, W. O., and Malkin, T., 3, 351 (Pergamon Press, London, 1955).
2. Isselbacher, K. J., Gastroenterology, 40, 259 (1961).
3. Laurell, C. B., Acta Physiol. Scand., 30, 289 (1953).
4. Bragdon, J. H., Havel, R. J., and Boyle, E., J. Lab. Clin. Med., 48, 36 (1956).
5. Rodbell, M., Fredrickson, D. S., and Ono, K., J. Biol. Chem., 234, 567 (1959).