title: Effect of atropine on the onset of fear bradycardia in Eastern cottontail rabbits Sylvilagus floridanus.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology*; D004562:Electrocardiography; D005239:Fear / Q000502:physiology*; D006339:Heart Rate / Q000187:drug effects*; D011817:Rabbits / Q000502:physiology*
chemical_list: D001285:Atropine