Methods The cell line transfected with E1A gene was treated by Epirubicin,Taxotere and 5-fluorouracil respectively.

• 方法通过PEI-Fe3O4纳米粒介导将E1A基因导入人乳腺癌细胞系MCF-7,经G418筛选获得稳定表达E1A的转染细胞(MCF-7-E1A)。