The productivity of the fibrinolytic enzyme of C6 is 4.73 times as compared with the original strain.The high fibrinolytic activity of the mutant could be inherited after several subcultures.

• 其产酶活性是出发菌株的4.；73倍；经过传代培养；该菌株的高产纤溶酶的特性能够稳定遗传。