1. From the Cardiovascular Sciences Research Group, University Hospital of Wales, Cardiff (M.E., R.A.A., G.R.E., S.D., S.K.J., M.J.L., M.P.F., A.R.); Department of Biomedical Sciences, University of Wales Institute, Cardiff (K.M.); and Department of Biochemistry, Liverpool John Moores University, Liverpool, UK (J.G.).