Objective:To investigate the application of epithelial membrance antigen(EMA) and cytokeratin(CK) in microme tastasis of epithelial tumors and its progress of related study.

• 目的:探讨上皮膜抗原(EMA)和细胞角蛋白(CK)在上皮肿瘤微转移的应用及研究进展。