Elevated KiSS-1 Expression in the Arcuate Nucleus Prior to the Cyclic Preovulatory Gonadotrophin-Releasing Hormone/Lutenising Hormone Surge in the Ewe Suggests a Stimulatory Role for Kisspeptin in Oestrogen-Positive Feedback. - Estrada, K. M.; Clay, C. M.; Pompolo, S.; Smith, J. T.; Clarke, I. J. (Journal of Neuroendocrinology, 2006)