1. From the Department of Physiology and Tulane Renal Hypertension and Renal Center (A.A.G., L.L., L.S.L., D.M.S., G.N., M.C.P.), Tulane University, School of Medicine, New Orleans, LA; Instituto de Ciencias Biomedicas (L.S.L.), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.