Immunohisto- chemical staining showed that As_2O_1 could make the expression of Bcl-2 up and make the expression of Fax, Fax-L down.

• 免疫组化研究表明As_2O_3注射液对PC-3细胞表达的凋亡相关基因具有一定的调节作用,即可下调Bcl-2基因的表达,上调Fax、Fax-L基因的表达。