肌上皮细胞(myoepithelial cell,MEC)是一种具有上皮细胞和间叶细胞双重形态及功能的细胞,同时也是对肿瘤性增生较为敏感的细胞之一,主要分布于人的乳腺、涎腺等多种腺体组织中。研究表明,在肿瘤组织中MEC的形态结构及其免疫表型都发生了很大的变化[1],因此,通过观察MEC免疫表 Myoepithelial cell (MEC) is a kind of cell with dual morphology and function of epithelial cells and mesenchymal cells. It is also one of the more sensitive cells to tumor proliferation, which is mainly distributed in human breast, salivary gland and many more Species of glandular tissue. Studies have shown that in the tumor tissue MEC morphological structure and immunophenotype have undergone great changes [1], therefore, by observing the MEC Immunization Table