title: Variations in noradrenaline output with respect to stimulus frequency, train length and origin of the transmitter.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D004558:Electric Stimulation; D066298:In Vitro Techniques; D009638:Norepinephrine / Q000378:metabolism*; D011169:Portal Vein / Q000378:metabolism*; D011817:Rabbits; D014316:Tritium; D014443:Tyrosine / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D014316:Tritium; D014443:Tyrosine; D009638:Norepinephrine