title: NOREPINEPHRINE TACHYPHYLAXIS AND GUANETHIDINE.
mesh_terms: D000818:Animals; D001794:Blood Pressure; D001795:Blood Pressure Determination; D004285:Dogs; D004361:Drug Tolerance; D006145:Guanethidine; D009638:Norepinephrine; D010600:Pharmacology; D012106:Research; D013618:Tachyphylaxis
chemical_list: D009638:Norepinephrine; D006145:Guanethidine
keywords: BLOOD PRESSURE; DOGS; DRUG TOLERANCE; EXPERIMENTAL LAB STUDY; GUANETHIDINE; NOREPINEPHRINE; PHARMACOLOGY; TACHYPHYLAXIS