Palmer ea 1988
Palmer R.M., Ashton D.S., Moncada S. Vascular endothelial cells synthesize nitric oxide from L-arginine. Nature. 1988 Jun 16;333(6174):664-6.
Palmer R.M., Rees D.D., Ashton D.S., Moncada S. L-arginine is the physiological precursor for the formation of nitric oxide in endothelium-dependent relaxation. Biochem Biophys Res Commun. 1988 Jun 30;153(3):1251-6.