No abstract available
MeSH terms
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Aging
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Animals
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Castration
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Circadian Rhythm
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Estradiol / pharmacology*
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Feedback
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Female
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Luteinizing Hormone / blood*
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Male
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Progesterone / pharmacology
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Prolactin / blood*
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Rats
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Sex Factors
Substances
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Progesterone
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Estradiol
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Prolactin
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Luteinizing Hormone