title: Heart tissue acetylcholine in chronically exercised rats.
mesh_terms: D000109:Acetylcholine / Q000032:analysis*; D000818:Animals; D001835:Body Weight; D006321:Heart / Q000033:anatomy & histology / Q000502:physiology; D008297:Male; D009206:Myocardium / Q000032:analysis*; D009929:Organ Size; D005082:Physical Exertion; D051381:Rats
chemical_list: D000109:Acetylcholine