Department of Physiology, Faculty of Medicine (M.L., E.P., A.D., P.B., G.C., P.E.), Department of Organic Chemistry, Faculty of Pharmacy (A.B.-P., P.M.), Department of Pharmacology and Pharmacotherapy (K.K.), and Department of Biophysics and Radiation Biology, Faculty of Medicine (T.H.), Semmelweis University, Budapest, Hungary; Gene Technology Division, Institute of Experimental Medicine-Hungarian Academy of Sciences, Budapest, Hungary (F.E.); and Department of Physiology, Faculty of Medicine, University of Szeged, Szeged, Hungary (M.D.).