In situ expression of Ucn mRNA in different endocrine status in the PVN and DLS of the rat brain. Coronal tissue sections were processed for ISH using the U1 DIG-labeled probe. Values correspond to the mean ± SEM of three to seven independent experiments. Analysis by one-way ANOVA showed a significant difference between experimental conditions in both areas studied (PVN: F = 14.17, R2 = 0.76, p < 0.0001; DLS: F = 8.65, R2 = 0.60, p < 0.0002). Newman–Keuls multiple comparison post hoc test gave the following significances: PVN, •, p < 0.05 compared with estrus, p < 0.01 compared with diestrus I, and p < 0.001 compared with male and OVX, ♦, p < 0.05 compared with diestrus I and estrus, ▪, p < 0.05 compared with diestrus I and estrus; DLS, ♦, p < 0.001 compared with diestrus I, and OVX, •, p < 0.01 compared with diestrus I, estrus, and OVX, and p < 0.001 compared with male, ★, p < 0.05 compared with diestrus I and p < 0.01 compared with OVX.