细胞核因子ＮＦ κＢＰ50 是一类蛋白质 ,具有和某些基因上启动区的固定核苷酸序列结合而启动基因转录的功能[1] 。国外文献报道甲状腺、非小细胞性肺癌和大肠癌中ＮＦ κＢ呈活化表达。目前国内尚少见到乳腺癌方面的研究报道。我们采用免疫组织化学和蛋白质印迹法检测了乳腺癌 Nuclear factor NF κBP50 is a type of protein that has the function of initiating gene transcription by binding to a fixed nucleotide sequence in the promoter of certain genes [1]. Foreign literature reported thyroid, non-small cell lung cancer and colorectal cancer NF κB expression was activated. At present, few reports on breast cancer have been reported in China. We used immunohistochemistry and Western blot to detect breast cancer