title: Improvement in methodology for measurement of plasma renin activity.
mesh_terms: D000804:Angiotensin II / Q000378:metabolism*; D004798:Enzymes / Q000097:blood*; D066298:In Vitro Techniques; D007475:Ion Exchange Resins; D012083:Renin / Q000378:metabolism*
chemical_list: D004798:Enzymes; D007475:Ion Exchange Resins; D000804:Angiotensin II; D012083:Renin