In the Nucleus preopticus anterior (POA), fadrozole treatment decreased AR in both sexes and decreased PR in females but not in males.
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In the anterior and posterior hypothalamus of courting birds an increase number of AR-ir and PR-ir neurons colocalizes (70-90%) in the Nucleus preopticus anterior (POA), nucleus preopticus medialis (POM), nucleus preopticus paraventricularis magnocellularis (PPM), nucleus hypothalami lateralis posterioris (PLH), and tuberal hypothalamus (Tu).
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In the anterior hypothalamus, high density of AR-ir was concentrated in several nuclei including the nucleus lateralis hypothalami, nucleus periventricularis magnocellularis, Nucleus preopticus anterior, nucleus preopticus medialis, and nucleus preopticus paraventricularis magnocellularis.
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In fact, high and low binding levels were obtained in the suprachiasmatic area and nucleus ectomamillaris (p < 0.01) and in the Nucleus preopticus anterior and paleostriatum primitivum (p < 0.001), respectively.
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A large number of VT-immunoreactive cells was found in the Nucleus preopticus anterior and nucleus paraventricularis.
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Castration in fact, elevated [ 3H] flunitrazepam binding in the Nucleus preopticus anterior and reduced binding levels in archistriatum dorsalis et ventralis and in the nucleus intercollicularis; all of these areas are known to have gonadal steroid receptors.
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Low receptor levels were found in the Nucleus preopticus anterior and the nucleus lateralis of the hypothalamic regions (less than 220 fmol/mg wet weight of tissue) as well as thalamic nuclei such as rotundus and pretectalis (220-261 fmol/mg wet weight of tissue).
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