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单词
extraembryonic membrane
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ex
′
traembryon
′
ic mem
′
brane,
[
Embryol.
]
Developmental Biology
any of the tissues, derived from the fertilized egg, that enclose or otherwise contribute to the support of the developing embryo, as the yolk sac, allantois, amnion, and chorion. Also called
embryonic membrane.
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更新时间:2026/2/25 16:55:07