The ER and PR gene expressions are negatively correlated to P gp gene expression in tumor stages, reactive hyperplasia of lymph nodes, the metastasis of lymph nodes and the degree of tumor infiltration.

• ER、PR与P－gp表达在淋巴结反应性增生、淋巴结伴有癌转移者，以及癌肿浸润的深度多有相反的阳性表达，呈负相关关系