1. Averill, R.L. W. and M.D. Purves (1966) J. Endocr. 26, 463.
2. Beyer, C. and F. Mena (1965) Amer. J. Physiol. 208, 585.
3. Chazal, G., M. Faudon, F. Gogan, M. Hery and E. Laplante (1974) J. de Physiol. 68, 18b.
4. Clemens, J.A. (1975) In “Hypothalamus and Endocrine Functions” (F. Labrie, J. Meites and G. Pelletier, eds), Plenum Press, New York, in press.
5. Fuxe, K. and Hokfelt, H. (1967) In “Neurosecretion” (S. Sutinskyn, ed), Springer Verlag, p. 277.