title: Changes in venous and arterial tone during treatment with antihypertensive agents.
mesh_terms: D000328:Adult; D000959:Antihypertensive Agents / Q000627:therapeutic use*; D001158:Arteries / Q000187:drug effects*; D001794:Blood Pressure / Q000187:drug effects; D006145:Guanethidine / Q000627:therapeutic use; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D007022:Hypotension / Q000188:drug therapy; D008875:Middle Aged; D010991:Plethysmography; D012110:Reserpine / Q000627:therapeutic use; D014680:Veins / Q000187:drug effects*
chemical_list: D000959:Antihypertensive Agents; D012110:Reserpine; D006145:Guanethidine