A comparative study of right and left vagus on the hearts of toads and dogs.
D000818:Animals; D001001:Anura; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D010828:Physiology, Comparative; D014630:Vagus Nerve / Q000502:physiology*
D001285:Atropine