1. Laboratory of Genetics and Molecular Cardiology (S.L.) and Laboratory of Experimental Hypertension (M.C.I.), Hypertension Unit, Heart Institute (InCor), University of São Paulo, São Paulo, Brazil; and the Laboratory of Cardiovascular Physiology (S.L., M.C.I.), the Department of Physiology, Institute of Health and Basics Sciences and Cardiology, and Biomedical Engineering Divisions (E.L.F., R.S.M., J.P.R.), Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre...