【病理生理和发病机制】（一）下丘脑-垂体-性腺轴人体从胎儿经青春期到完全的性成熟和生育这一成长过程中，下丘脑（促性腺激素释放激素，GnRH）-垂体（促性腺激素，Gn）-性腺（性激素）轴（HPG轴）的调控和激活也相应发生一系列变化。
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