The Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah (D.L.S.); The William Harvey Research Institute, St. Bartholomew's and William and Mary Medical College, London, England (R.M.B.); and Center for Vascular Biology, Department of Physiology, University of Connecticut School of Medicine, Farmington, Connecticut (T.H.)

The Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah (D.L.S.); The William Harvey Research Institute, St. Bartholomew's and William and Mary Medical College, London, England (R.M.B.); and Center for Vascular Biology, Department of Physiology, University of Connecticut School of Medicine, Farmington, Connecticut (T.H.)

The Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah (D.L.S.); The William Harvey Research Institute, St. Bartholomew's and William and Mary Medical College, London, England (R.M.B.); and Center for Vascular Biology, Department of Physiology, University of Connecticut School of Medicine, Farmington, Connecticut (T.H.)