一种组织损伤的形态学改变。
结果：重度MVPS患者手术、病理及电镜检查均证实为原发性二尖瓣黏液样变性，胶原、弹力纤维溶解或离断。
Result:Severe patients with MVPS were diagnosed as primary myxomatous degeneration by surgery, pathology and electron-microscope.
结论：外源野生型PTEN基因的转染能导致体外培养的高转移性黏液表皮样癌细胞变性、坏死或凋亡。
Conclusion: the exogenous PTEN gene may induce denaturalization, necrosis, and apoptosis of the highly metastatic mucoepidermoid carcinoma cells.
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