title: [Etiological studies of essential hypertension. C. Catecholamines].
mesh_terms: D000328:Adult; D000367:Age Factors; D001794:Blood Pressure; D002395:Catecholamines / Q000378:metabolism*; D006801:Humans; D006973:Hypertension / Q000378:metabolism* / Q000503:physiopathology; D008875:Middle Aged; D012083:Renin / Q000097:blood
chemical_list: D002395:Catecholamines; D012083:Renin