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Mean (±SEM) LH concentrations in ovary-intact ewes injected with both nor-BNI and NKB (●) into the third ventricle (arrows). Nor-BNI was injected 30 min before NKB injection and tissue was collected 12 min after the NKB injection. Data from ewes receiving only NKB (○) are duplicated from the bottom panel of Fig. 2 for comparison purposes. *P < 0.05 vs pretreatment LH concentrations and LH concentrations in ewes treated only with NKB by two-way ANOVA with repeated measures.
