No abstract available
MeSH terms
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Anestrus*
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Animals
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Circadian Rhythm
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Darkness
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Estrus*
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Female
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Follicle Stimulating Hormone / blood
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Horses / physiology*
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Light
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Luteinizing Hormone / blood
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Melatonin / blood
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Ovary / physiology*
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Ovulation
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Periodicity*
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Pregnancy
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Prolactin / blood
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Seasons
Substances
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Prolactin
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Luteinizing Hormone
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Follicle Stimulating Hormone
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Melatonin