Objective To assess the role of the p53 tumor suppressor gene(wild type p53) in G 1 arrest and apoptosis after irradiation in human gastric carcinoma 823 cell lines(BGC823). Methods Three human gastric carcinoma 823 cell lines with different p53 status,i.

• 目的 评价抑癌基因p53（ 野生型p53） 对照射后人胃癌细胞系（BGC?823） 的G1 期阻滞和凋亡的控制作用。