title: Effect of heavy physical training on the catecholamine content of the heart and adrenals of the guinea pig.
mesh_terms: D000311:Adrenal Glands / Q000032:analysis / Q000378:metabolism*; D000818:Animals; D001835:Body Weight; D006332:Cardiomegaly / Q000209:etiology; D004837:Epinephrine / Q000032:analysis / Q000378:metabolism*; D006168:Guinea Pigs; D008297:Male; D009206:Myocardium / Q000032:analysis / Q000378:metabolism*; D009638:Norepinephrine / Q000032:analysis / Q000378:metabolism*; D009929:Organ Size; D005082:Physical Exertion
chemical_list: D009638:Norepinephrine; D004837:Epinephrine