Changes in melatonin concentration in pineal gland in rats exposed to continuous light or darkness.
D000818:Animals; D001001:Anura; D001681:Biological Assay; D003624:Darkness; D005725:Ganglia, Autonomic / Q000502:physiology; D008027:Light; D008297:Male; D008550:Melatonin / Q000032:analysis*; D009799:Ocular Physiological Phenomena; D010870:Pineal Gland / Q000032:analysis*; D051381:Rats
D008550:Melatonin