title: Daily serotonin changes persist in rat pineals in organ culture.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D009924:Organ Culture Techniques; D010870:Pineal Gland / Q000378:metabolism*; D051381:Rats; D012701:Serotonin / Q000378:metabolism*; D013997:Time Factors; D014364:Tryptophan / Q000378:metabolism
chemical_list: D012701:Serotonin; D014364:Tryptophan