A high MRP expression positive rate 72 6% was present in the breast cancer grou p,23 1% in the breast tissue adjacent to cancer group and 18 2% in benign bre ast tumor.

• 三种组织阳性率分别为 :乳腺癌 72 6%25 ,癌旁正常乳腺组织2 3 1%25 ,乳腺良性肿瘤 18 2%25。