Methods: The expressions of HLA-G protein were detected using immunohistochemical method (sp) in 30 normal villus of early trimester, 20 hydatidiform mole and 11 invasive hydatidiform mole tissues.

• 方法：应用免疫组化法检测30例早孕绒毛、20例葡萄胎和11例侵蚀性葡萄胎中HLA-G蛋白的表达情况。