在许多多细胞动物的发生中，由原肠胚内层形成的腹壁称为原肠，其内腔称为原肠腔（gastrocoel），也有将后者称为原肠的。
n. archenteron ; gastrocoele
misc. celenteron ; protogaster ; primitive gut
·2,447,543篇论文数据，部分数据来源于NoteExpress
原肠作用是脊椎动物早期胚胎发育的关键事件。
Gastrulation is an essential event during early embryo development.
结果表明，单环刺消化道起源于原肠胚期内陷而成的原肠腔；
The results showed that, the digestive canal initiated from the gastrocoele, which was formed by invagination at gastrula stage.
除去瓶状细胞后原肠形成不被阻断，内卷和外包仍能继续进行；
The gastrulation of CynoPs embryos is not interrupted by removing the bottle cells in dorsal sector.
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