类似绒毛膜的；

Resembling the chorion;

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胎盘和覆盖它的组织（称作绒毛膜）跟你的身体是同一种遗传物质组成的，它们可以提供重要的关于先天缺陷的信息。

The placenta and tissue covering it ( called chorionic villi) are made up of the same genetic material as your baby and can provide important information about birth defects.

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另外两种与妊娠相关的激素——绒毛膜生长催乳素与妊娠相关糖蛋白的水平也远低于它们应有的水平。

Levels of two other hormones associated with pregnancy-chorionic somatomammotropin and pregnancy-associated glycoprotein-were also far lower than they should have been.

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