a vascular membrane formed by the union of the chorion and the allantois in birds and reptiles and serving a respiratory function, often used as…
| 单词 | θ38787 |
| 释义 | the world > animals > birds > parts of or bird defined by > [noun] > vascular membrane (1) chorio-allantois1933 a vascular membrane formed by the union of the chorion and the allantois in birds and reptiles and serving a respiratory function, often used as… |
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