Method The expression of CK19 mRNA was measured in 61 axillary lymph nodes (LNs) of 15 breast carcinomas by using reverse transcriptase-polymerase chain reaction (RT-PCR).

• 方法采用逆转录-聚合酶链反应技术，扩增细胞骨架角蛋白19(CK19)，对15例乳腺癌患者的癌组织及其61个腋窝淋巴结进行检测。