Objective: To investigate the expression of breast cancer susceptibility gene 2(BRCA2) in sporadic breast cancer tissue and its significance,and to clarify the correlation of the expression of the BRCA2 protein with the expression of C-erbB-2,ER and PR.

• 目的:探讨乳腺癌易感基因2(BRCA2)在散发性乳腺癌组织中的表达及意义,了解BRCA2蛋白的表达与雌激素受体(ER)、孕激素受体(PR)及原癌基因C-erbB-2之间的相关性。