title: Evidence that ATP acts as a co-transmitter with noradrenaline in sympathetic nerves supplying the guinea-pig vas deferens.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology*; D000818:Animals; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D009638:Norepinephrine / Q000494:pharmacology*; D013564:Sympathetic Nervous System / Q000502:physiology*; D014649:Vas Deferens / Q000187:drug effects / Q000294:innervation*
chemical_list: D000255:Adenosine Triphosphate; D009638:Norepinephrine