title: Maintained frequency dependence of noradrenaline secretion during prolonged stimulation of sympathetic nerves in guinea-pig vas deferens.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D005071:Evoked Potentials; D006168:Guinea Pigs; D008297:Male; D008722:Methods; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000294:innervation / Q000502:physiology; D009638:Norepinephrine / Q000378:metabolism*; D013564:Sympathetic Nervous System / Q000378:metabolism / Q000502:physiology*; D013997:Time Factors; D014316:Tritium; D014649:Vas Deferens / Q000294:innervation*
chemical_list: D014316:Tritium; D009638:Norepinephrine