Effect of native and oxidized low-density lipoprotein on endothelial nitric oxide and superoxide production. Key role of L-arginine availability. - Vergnani,L.; Hatrik,S.; Ricci,F.; Passaro,A.; Manzoli,N.; Zuliani,G.; Brovkovych,V.; Fellin,R.; Malinski,T. (Circulation, 2000)