1. Nagatsu, T., Levitt, M., and Udenfriend, S. 1964. Tyrosine hydroxylase: The initial step in norepinephrine biosynthesis. J. Biol. Chem. 239:2910?2917.
2. Levitt, M., Spector, S., Sjoerdsma, A., and Udenfriend, S. 1965. Elucidation of the rate-limiting step in norepinephrine biosynthesis in the perfused guinea-pig heart. J. Pharmacol. Exp. Ther. 148:1?8.
3. Chuang, D. M. and Costa, E. 1974. Biosynthesis of tyrosine hydroxylase in rat adrenal medulla after exposure to cold. Proc. Natl. Acad. Sci. USA 71:4570?4574.
4. Chuang, D., Zsila, G., and Costa, E. 1975. Turnover rate of tyrosine hydroxylase in rat adrenal medulla after exposure to cold. Mol. Pharmacol. 11:784?794.
5. Fluharty, S. J., Snyder, G. L., Zigmond, M. J., and Stricker, E. M. 1985. Tyrosine hydroxylase activity and catecholamine biosynthesis in the adrenal medulla of rats during stress. J. Pharmacol. Exp. Ther. 233:32?38.