Methods The platelet NO production in 21 hypercholesterolemia(HC) patients and 26 normal individuals was assayed by spectrum, the NOS activity and the transportation of L Arg were determined by 3H labelled L Arg.

• 方法 采用比色法检测 2 1例HC患者和 2 6名健康体检者血小板的NO水平 ,采用放射性核素(3H L 精氨酸 )标记法检测血小板一氧化氮合成酶 (NOS)及L Arg转运系统活性。