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Melatonin
Light
Darkness
Ultraviolet Rays
Lighting
Circadian Rhythm
Seasons
Radiation Dose-Response Relationship
Photoperiod
Periodicity
Pineal Gland
Retina
Testis
Mesocricetus
Cricetinae
Rats
Phototherapy
Photic Stimulation
Organ Size
Seasonal Affective Disorders
Co-Publications
20
19
16
9
6
5
4
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