链激酶与异构人体纤维蛋白溶解酶原(以下简称纤溶酶原)的复合物-BRL-26921,其纤溶酶原可选择性地与血栓中的纤维蛋白结合而不易与纤维蛋白原结合。纤溶酶原系一种强烈的链激酶激活剂,然在血循环中此复合物的这种效应因有异构体结合而暂时被抑制,这样可避免链激酶的过早被激活。在体内经37分钟的半衰期,这种异构体被水解而发挥其激活链激酶作用,从而使纤维蛋白溶解。作者曾经 Streptokinase and heterogeneous human plasminogen (hereinafter referred to as plasminogen complex) - BRL-26921, the plasminogen selectively with fibrin in thrombus but not easy to bind with fibrinogen . Plasminogen is a potent streptokinase activator. However, this effect of the complex in the blood circulation is temporarily inhibited by isomeric binding, which prevents the premature activation of streptokinase. After 37 minutes of half-life in vivo, this isoform is hydrolyzed to exert its activating streptokinase action, thereby dissolving fibrin. The author has