Hormones
Research from Oregon Health & Science University in the area of hormones published
Published in Women's Health Weekly, November 22nd, 2007
According to a study from the United States, "A sexually dimorphic nucleus that can be identified in adult sheep by its characteristic pattern of cytochrome P450 aromatase mRNA exists in the preoptic/anterior hypothalamic area and is called the ovine sexually dimorphic nucleus (oSDN). In other species, male-typical sexually dimorphic preoptic nuclei develop under the influence of gonadal testosterone exposure."
"Thus, we hypothesized that the oSDN develops before birth in the sheep and is organized by exposure to testosterone. To test this, we determined whether an identifiable oSDN is present in the fetal lamb brain at d 130-140 gestation ( term similar to 150 d). In...
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