1. Our results show that the administration of thyroxine to hypothyroid subjects produces a rise in seromucoid concentration from low to abnormally high values. This rise can be detected soon after starting treatment, and may persist long after the patient is clinically euthyroid. Our investigations suggest that this change in the blood chemistry is associated with an increased urinary excretion of uromucoid, which has been already noted by,1963
2. Cameron, E., and Campbell, A. (1964). Brit. J. Urology, 36, 257. -, -, and Plenderleith, W. (1961a). Scot. med. J., 6, 301.
3. Cameron, E., and Campbell, A. (1961b). Ibid., 6, 308.
4. Cameron, E., and Campbell, A. (1962). Gut, 3, 260.
5. Campbell, A., Graham, J. G., and Cameron, E. (1962). Scot. med. J., 7, 472.