英语语法分析

The single-cell gel electrophoresis and immunohistochemistry test were showed that roxarsone has DNA damage to the mice cells, and the former could detect earlier cell DNA damage.

单细胞凝胶电泳实验及免疫组化均表明洛克沙胂对小鼠细胞有DNA损伤作用，且单细胞凝胶电泳能够检测出早期细胞损伤。