Moenter, S.M.; Caraty, A.; and Karsch, F.J. The estradiol-induced surge of 
gonadotropin-releasing hormone in the ewe. Endocrinology 127:1375-1384, 
1990. 
Moore, K.E. Interactions between prolactin and dopaminergic neurons. Biol 
Reprod 36:47-58, 1987. 
Park, 0., and Ramirez, V. Spontaneous changes in LHRH release during the 
rat estrous cycle, as measured with repetitive push-pull perfusions of the 
pituitary gland in the same female rats. Neuroendocrinology 50:66-72, 1989. 
Roberts, M.M.; Robinson, A.G.; Fitzsimmons, M.D.; Lee, W.-S.; and Hoffman, 
G.E. c-Fos expression in vasopressin and oxytocin neurons reveals 
functional heterogeneity within magnocellular neurons. Neuroendocrinology, 
submitted for publication. 
Sarkar, D.K.; Chiappa, S.A.; and Fink, G. Gonadotropin-releasing hormone 
surge in pro-oestrous rats. Nature 264:461-466, 1976. 
Sheng, M., and Greenberg, M. The regulation and function of c-fos and 
other lEGs in the nervous system. Neuron 4:477-485, 1990. 
Smith, M.S., and Lee, W.-S. c-Fos expression as a marker of neuronal 
activation in response to the suckling stimulus. (Abstract 1057.) Endocrine 
Soc 72:289, 1990. 
Watson, R.E.; Wiegand, S.J.; Clough, R.W.; and Hoffman, G.E. Use of 
cryoprotectant to maintain long-term peptide immunoreactivity and tissue 
morphology. Peptides 7:1 55-1 59, 1986. 
Witkin, J.W.; Paden, C.M.; and Silverman, A.J. The luteinizing hormone- 
releasing hormone (LHRH) systems in the rat brain. Neuroendocrinology 
35:429-438, 1982. 
Wray, S., and Hoffman, G.E. A developmental study of the quantitative 
distribution of LHRH neurons in postnatal male and female rats. J Comp 
Neurol 252:522-531, 1986a. 
Wray, S., and Hoffman, G.E. Postnatal morphological changes in rat LHRH 
neurons correlated with sexual maturation. Neuroendocrinology 43:93-97, 
1986b. 
ACKNOWLEDGMENTS 
The studies reported in this manuscript were supported by National Institutes of 
Health grants NS-27014, NS-28730, HD-14643, and HD-21350 and National 
Science Foundation grant BNS-8919953. Thomas C. Waters provided 
photographic assistance. 
AUTHORS 
Gloria E. Hoffman, Ph.D. 
Associate Professor 
132 
