[Morphology of the pineal organ (author's transl)].
D000818:Animals; D002940:Circadian Rhythm; D005399:Fishes; D005724:Ganglia / Q000033:anatomy & histology; D008855:Microscopy, Electron, Scanning; D009475:Neurons, Afferent / Q000166:cytology; D009476:Neurons, Efferent / Q000166:cytology; D010275:Parasympathetic Nervous System / Q000033:anatomy & histology; D010786:Photoreceptor Cells / Q000648:ultrastructure; D010870:Pineal Gland / Q000032:analysis / Q000033:anatomy & histology* / Q000648:ultrastructure; D011898:Ranidae; D051381:Rats; D012701:Serotonin / Q000032:analysis
D012701:Serotonin