最終更新日：2024/08/06
The proamnion is a protective membrane that surrounds the embryo in reptiles and birds.
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The proamnion is a protective membrane that surrounds the embryo in reptiles and birds.
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The proamnion is a protective membrane that surrounds the embryo in reptiles and birds.
The proamnion is a protective membrane that surrounds the embryo in reptiles and birds.
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