Liberation of sympathin and acetylcholine by faradic stimulation of the frog's heart.
D000109:Acetylcholine; D000818:Animals; D001001:Anura; D002395:Catecholamines; D006321:Heart / Q000502:physiology*; D011898:Ranidae
D002395:Catecholamines; D000109:Acetylcholine
ACETYLCHOLINE; HEART/physiology; SYMPATHINS