homeostasis/metabolism
• elevated serum estrodial (E2) concentrations in females up to the age of 1 year
• normal serum progesterone (P4) concentrations
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• decreased serum concentrations of FSH to levels below the detection limit (0.1ng/ml) at 6 to 8 months old females
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• decreased serum concentrations of LH to levels below the detection limit (40pg/ml) at 2 to 3, 6 to 8 months old females
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• elevated serum prolactin (PRL) level, no specific age mentioned
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