epiboly

Japanese: epiboly
epiboly

...The first method is called invagination, in which the cell layer on the vegetal pole side folds into the blastocoel (Figure 3-b, Figure 3-c). The second method is called epiboly, in which the small, frequently dividing cells on the animal pole side envelop the large cells on the vegetal pole (Figure 3-a). In either case, a small hole is left in the ectoderm after the endodermal cell layer sinks into the blastocoel. ...

*Some of the terminology explanations that mention "epiboly" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…第1の方法は陥入invaginationとよばれ,植物極側の細胞層が胞胚腔内に折れ込むことによる(図3‐b,図3‐c)。第2の方法はおおいかぶせ法epibolyとよばれ,小型で分裂頻度の高い動物極側の細胞が,植物極側の大型の細胞を包み込むことによる(図3‐a)。このいずれの場合にも,内胚葉細胞層が胞胚腔内に没したあとの外胚葉には,小さな穴が残される。…

※「epiboly」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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