Methods: Immunohistochemical method was used to observe the distribution of LN and FN in normal chorion, hyditidiform mole and choriocarcinoma.

• 方法：用免疫组织化学方法观察层粘连蛋白和纤维粘连蛋白在正常绒毛膜、葡萄胎和绒毛膜癌组织中的表达。