中文

修后

修前

SD大鼠1日龄

SD rats at 24 hours after birth/SD rats aged 24 hours

铅、镉单独染毒组和铅镉联合染毒组GSH-Px、SOD和TChE活性随染毒剂量的增加而下降，而CAT活性及MDA含量呈升高趋势

The decreased GSH-Px and TChE levels, as well as increased CAT activity and MDA expression, was dose-dependent

The decrease in GSH-Px and TChE activity, and increase in CAT activity and MDA level, was dose-dependent, but the decrease in SOD activity was not

升高幅度明显下降，这可能是细胞为抵御氧化损伤，通过提高某些抗氧化酶活性而做出的一种保护性反应

the increasing amplitude obviously declined, which was probably due to enhanced activity of some antioxidases to resist oxidative damage

the increasing amplitude obviously declined, which was probably a protective reaction performed by cells through enhancing the activities of some antioxidases to resist the oxidative damage