Enzyme kinetics showed that the activity of Cyclin E/Cdk2 kinase complex was upregulated after irradiation, reached to maximum at 12 hours.

• 酶动力学研究结果揭示 :电离辐射后细胞周期蛋白E Cdk2激酶活性增高 ；12h细胞周期蛋白E Cdk2激酶活性达到最大 .