1. From the Department of Biochemistry and Immunology (M.G.A.G.P., L.L.S., D.A.D., F.R.B.C., M.D.G., E.B.O, C.M.C.-N.), Department of Pharmacology (C.B., M.C.O.S.), and Department of Physiology (J.A.C.O., N.G.-C.), Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil.