title: Plasma renin activity, sodium balance and sympathetic activity during progress of essential hypertension.
mesh_terms: D001794:Blood Pressure; D006339:Heart Rate; D006801:Humans; D006973:Hypertension / Q000378:metabolism / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009638:Norepinephrine / Q000652:urine*; D012083:Renin / Q000097:blood*; D012964:Sodium / Q000378:metabolism*; D013564:Sympathetic Nervous System / Q000503:physiopathology*
chemical_list: D012964:Sodium; D012083:Renin; D009638:Norepinephrine