Effects of endothelin (ET) on arterial pressure, fluid partition and plasma concentration of atrial natriuretic peptide (ANP): Influence of inhibition (I) of neutral endopeptidase (NEP) and phosphodiesterase (PDE): J.P. Valentin, C. Qiu, E. Wiedemann, D.G. Gardner, M.H. Humphreys. Divisions of Nephrology & Endocrinology, San Francisco General Hospital; Metabolic Research Unit, University of California San Francisco, San Francisco, CA, USA