title: [Participation of sympathetic nervous factors in essential hypertension].
mesh_terms: D000328:Adult; D000368:Aged; D006439:Hemodynamics; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008875:Middle Aged; D009638:Norepinephrine / Q000652:urine; D013564:Sympathetic Nervous System / Q000503:physiopathology*
chemical_list: D009638:Norepinephrine