Pituitary-adrenal and thyroid effects on melatonin content of the rat pineal gland

Based on clinical findings of diminished nocturnal serum melatonin levels in affective illness, we hypothesized that alterations in the pituitary-adrenal or thyroid axes of the rat might alter the nocturnal rise of melatonin content of the pineal gland in that species. Two experiments were conducted...

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