title: Difference in the turnover of noradrenaline in rat heart during day and night.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D006207:Half-Life; D008027:Light; D008297:Male; D009206:Myocardium / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism*; D051381:Rats; D013997:Time Factors; D014316:Tritium
chemical_list: D014316:Tritium; D009638:Norepinephrine