title: Influence of light and darkness on the turnover of noradrenaline in the rat heart.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D006207:Half-Life; D007700:Kinetics; D008027:Light; D008297:Male; D008781:Methyltyrosines / Q000494:pharmacology; D009206:Myocardium / Q000201:enzymology / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism*; D013997:Time Factors; D014316:Tritium; D014446:Tyrosine 3-Monooxygenase / Q000037:antagonists & inhibitors
chemical_list: D008781:Methyltyrosines; D014316:Tritium; D014446:Tyrosine 3-Monooxygenase; D009638:Norepinephrine