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| | + | == Hypothalamic Neurone Release of GnRH == |
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| | + | * Hypothalamic development occurs gradually with growth of the animal. |
| | + | * The Hypothalamus contains a tonic GnRH centre and a preovulatory GnRH 'surge' centre. |
| | + | * Before puberty can occur, full neural activity of the surge centre must be achieved. |