Xiong, J J; Karsch, F J; Lehman, M N (1997) Evidence for seasonal plasticity in the gonadotropin-releasing hormone (GnRH) system of the ewe: changes in synaptic inputs onto GnRH neurons. Endocrinology 138:1240-50
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Lehman, M N; Goodman, R L; Karsch, F J et al. (1997) The GnRH system of seasonal breeders: anatomy and plasticity. Brain Res Bull 44:445-57
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Lehman, M N; Durham, D M; Jansen, H T et al. (1996) Dopaminergic A14/A15 neurons are activated during estradiol negative feedback in anestrous, but not breeding season, ewes. Endocrinology 137:4443-50
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Jansen, H T; Gong, Q; Norgren Jr, R B et al. (1994) Single- and double-label immunocytochemical study of the ovine suprachiasmatic nucleus (SCN): GABAergic and peptidergic relationships. Brain Res Bull 34:499-506
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Lehman, M N; Karsch, F J (1993) Do gonadotropin-releasing hormone, tyrosine hydroxylase-, and beta-endorphin-immunoreactive neurons contain estrogen receptors? A double-label immunocytochemical study in the Suffolk ewe. Endocrinology 133:887-95
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Moenter, S M; Karsch, F J; Lehman, M N (1993) Fos expression during the estradiol-induced gonadotropin-releasing hormone (GnRH) surge of the ewe: induction in GnRH and other neurons. Endocrinology 133:896-903
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Lehman, M N; Ebling, F J; Moenter, S M et al. (1993) Distribution of estrogen receptor-immunoreactive cells in the sheep brain. Endocrinology 133:876-86
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Webster, J R; Moenter, S M; Barrell, G K et al. (1991) Role of the thyroid gland in seasonal reproduction. III. Thyroidectomy blocks seasonal suppression of gonadotropin-releasing hormone secretion in sheep. Endocrinology 129:1635-43
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Norgren Jr, R B; Lehman, M N (1991) Neurons that migrate from the olfactory epithelium in the chick express luteinizing hormone-releasing hormone. Endocrinology 128:1676-8
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Norgren Jr, R B; Lehman, M N (1990) A new chromogen for use in HRP-tract tracing and double-label immunocytochemistry. Brain Res Bull 25:393-6
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