allantoisの例文

例文

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1. An amnion, chorion, and allantois are present during embryonic life.
2. In other words, the allantois takes no share in its formation.
3. Germ cells migrate from near the allantois and colonize the primordial gonads.
4. A very small allantois is found in modern amphibians.
5. Also, it is a common misconception that the allantois gives rise to the umbilical cord.