Methods Rats were given LP after 4 weeks,the DNA break in peripheral blood lymphocytes and liver cells from the rats were analyzed with single cell gel electrophoresis.

• 方法大鼠灌胃番茄红素4周后,采用单细胞凝胶电泳技术对外周血淋巴细胞和肝细胞DNA损伤进行分析。