infolding

内折

名　词：infold'ment

同：	[n.] introversion, intussusception, invagination

The infolding of a portion of the outer layer of a blastula in the formation of a gastrula.
肠套叠在原肠胚形成过程中囊胚的外层的折叠部分收藏

the folding in of an outer layer so as to form a pocket in the surface
- the invagination of the blastula
[同] infolding, introversion, intussusception, invagination

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