Bradley, J. E. S., Davidsson, D., MacIntyre, I. & Rapoport, A. (1956). Biochem. J . 62, 33P. Brodie, B. B., Axelrod, J., Soberman, R. & Levy, B. B. (1949). J. biol. Chem. 179, 25. Broiek, J. (1952). Fed. Proc. 11, 784. Hevesy, G. & Hofer, E. (1934). Nature, Lond., 134, 879. Keys, A. & Broiek, J. (1953). Physiol. Rev. 33, 245. Keys, A,, Broiek, J., Henschel, A., Mickelsen, 0. & Taylor, H. L. (19...