The pineal complex, melatonin, and color change in the lamprey Lampetra.
D000818:Animals; D002856:Chromatophores / Q000187:drug effects*; D002940:Circadian Rhythm; D005399:Fishes / Q000502:physiology*; D007016:Hypophysectomy; D008543:Melanins; D009074:Melanocyte-Stimulating Hormones / Q000037:antagonists & inhibitors; D008550:Melatonin / Q000494:pharmacology*; D008675:Metamorphosis, Biological; D009799:Ocular Physiological Phenomena; D010858:Pigmentation; D010870:Pineal Gland / Q000502:physiology* / Q000601:surgery; D010902:Pituitary Gland / Q000502:physiology
D008543:Melanins; D009074:Melanocyte-Stimulating Hormones; D008550:Melatonin