title: [Age-related changes in the serotonin content of the epiphysis of birds].
abstract: Serotonin content of the epiphysis has been studied in 1-day chicks, 1-, 5-5 1/2-, 8-12- and 24-month hens. It was found that this content undergoes significant changes during life cycle of hens, being dependent on physiological activity of the gonads. The highest level of serotonin (16 micrograms/g) was observed in 8-12 months old hens which corresponds to the period of the most intensive activity of the gonads.
mesh_terms: D000375:Aging / Q000378:metabolism*; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D005260:Female; D010870:Pineal Gland / Q000378:metabolism*; D012701:Serotonin / Q000378:metabolism*
chemical_list: D012701:Serotonin
vernacular_title: Vozrastnye izmeneniia soderzhaniia serotonina v épifize ptits.