ROLE OF THE RENAL KALLIKREIN-KININ SYSTEM IN THE CHANGES OF BLOOD PRESSURE AND RENAL HEMODYNAMICS AND NATRIURESIS PRODUCED BY INTRAVENOUSLY INJECTED α-HUMAN ATRIAL NATRIURETIC POLYPEPTIDE : Hypertension (I) : FREE COMMUNICATIONS (I) : PROCEEDINGS OF THE 49th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY