Amnion
The amnion is an extremely thin tissue, or membrane. It encloses a developing embryo, and is present within the eggs of all vertebrates which live on land. The presence of the amnion creates a ...
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Chorion
In all vertebrates, the chorion is a membranous structure which completely encloses a developing embryo. After birth, this chorion is no longer needed, and is discarded.
In birds and reptiles,...
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Amnion