Acetylcholine, bretylium and release of norepinephrine from sympathetic nerve endings.
D000109:Acetylcholine / Q000096:biosynthesis / Q000502:physiology*; D001949:Bretylium Compounds / Q000494:pharmacology*; D009411:Nerve Endings / Q000187:drug effects / Q000502:physiology*; D009638:Norepinephrine / Q000502:physiology*; D010276:Parasympatholytics / Q000494:pharmacology; D013564:Sympathetic Nervous System / Q000502:physiology*; D009435:Synaptic Transmission / Q000187:drug effects
D001949:Bretylium Compounds; D010276:Parasympatholytics; D000109:Acetylcholine; D009638:Norepinephrine