三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

CD326, also known as EpCAM （Epithelial Cell Adhesion Molecule）, is a transmembrane protein expressed in epithelial cells. It plays a role not only in normal epithelial cells, contributing to embryonic development and adult cell differentiation, but also in epithelial-derived cancer cells, significantly impacting tumor formation and spread. CD326 also plays a role in the tumor microenvironment, participating in interactions between tumor cells and stromal components, cell migration, cell differentiation, and signal transduction. In clinical applications, CD326 is considered a potential diagnostic and therapeutic target due to its expression in epithelial-derived malignant tumors. For example, CD326 can be used for the positive selection of viable epithelial tumor cells in the peripheral blood, bone marrow, lymphatic tissues, and serous effusions of cancer patients. Additionally, the expression levels of CD326 in certain tumor types are associated with advanced disease stages and poorer overall survival rates, indicating that it may be a potential prognostic biomarker.