title: Letter: Standardisation for renin assay.
mesh_terms: D001681:Biological Assay; D003937:Diagnosis, Differential; D006801:Humans; D006973:Hypertension / Q000097:blood / Q000175:diagnosis; D011863:Radioimmunoassay; D012083:Renin / Q000097:blood*
chemical_list: D012083:Renin