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extraembryonic

Extraembryonic vs Chorioallantois - What's the difference?

extraembryonic | chorioallantois |


As an adjective extraembryonic

is (medicine) inside the womb, but outside the embryo.

As a noun chorioallantois is

(anatomy) the vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion, that makes up the placenta in most mammals; the chorioallantoic membrane.