Norepinephrine content fluctuations in locus coeruleus, medial preoptic area and medial basal hypothalamus during the prolactin secondary surge of estrus afternoon - Szawka, R. E.; Helena, C. V. V.; Franci, Celso Rodrigues; Anselmo-Franci, Janete Aparecida (Neuroscience Symposium of the International Institute for Neuroscience of Natal, 2004)