The effect of light and dark background upon melatonin levels in larval Xenopus.
D000818:Animals; D002856:Chromatophores / Q000032:analysis / Q000378:metabolism; D003624:Darkness; D007814:Larva; D008027:Light; D008550:Melatonin / Q000032:analysis / Q000378:metabolism*; D012701:Serotonin / Q000032:analysis / Q000378:metabolism; D014981:Xenopus
D012701:Serotonin; D008550:Melatonin