Morphological and functional comparison between the retina and the pineal organ of lower vertebrates.
D000818:Animals; D008550:Melatonin / Q000378:metabolism; D010786:Photoreceptor Cells / Q000378:metabolism; D010870:Pineal Gland / Q000166:cytology* / Q000502:physiology; D012160:Retina / Q000166:cytology* / Q000502:physiology; D014714:Vertebrates / Q000033:anatomy & histology*
D008550:Melatonin