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  • Title: Light at night cannot suppress pineal melatonin levels in the lizard Anolis carolinensis.
    Author: Underwood H.
    Journal: Comp Biochem Physiol A Comp Physiol; 1986; 84(4):661-3. PubMed ID: 2875831.
    Abstract:
    Up to 2 hr exposure of anoles to high intensity natural or artificial illumination at mid-dark does not suppress pineal melatonin levels. The results support the hypothesis that the lizard pineal is completely insensitive to acute exposure to light at night which is in direct contrast to the effects of light in higher vertebrates.
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