原肠形成

我们对PACT杂合体小鼠自交子代做了大量的胚胎期追踪分析，发现PACT纯合体基因敲除小鼠在胚胎期6.5至7.5天死亡，胚胎发育停滞，原肠形成失败。

We found the homozygotes died around embryonic days 6.5-7.5 . Mutant embryos were found developmentally retarded and failed to undergo gastrulation .

蒙古绵羊胚胎的原肠形成

The gastrulation of Mongolian sheep embryos

东方蝾螈原肠形成期瓶状细胞的结构及其对胚胎发育的影响

Structure of the bottle cells in Cynops orientalis gastrulation and their effect of removal on embryonic development

在胚胎发育初期，FGF可诱导原肠胚形成期间的细胞迁移和神经板前后体轴的建立；

FGF control cell migration and establishment of the anterior-posterior body axis of the neural plate during gastrulation .

细胞的这种向里推进标志着原肠胚形成的开始。

This pushing-in of cells marks the start of gastrulation .

除了观察正常细胞的原肠胚形成，科学家们还观察了突变细胞。

In addition to looking at normal gastrulation , the scientists also looked at what happens to gastrulation when mutations occur .

外胚层囊胚的外层，在原肠胚形成之后生后外胚层组织随胚的发育和生长，胚乳细胞逐渐解体。

The outer layer of a blastula that gives rise to the ectoderm after gastrulation . Endosperm , cells disorganize gradually along with embryo development .

蛙类的早期胚胎发育，特别着重于原肠背壁形成中的某些问题

Early Development of Anura Embryo with Particular Reference to the Formation of the Roof of Archenteron

并就乌龟发育分期的标准，原肠胚的形成，羊膜尾褶和后羊膜管，早期胚胎的自身运动等问题进行了讨论。

The authors discussion the staging parameters of embryonic development , the forming of gastrulation , " ammon tail fold " and " posterior amnion tube " and the forward movement of the embryo itself .

脊椎动物的原肠运动是一种基本的形态发生运动。脊椎动物通过原肠运动最终形成了三胚层：外胚层，中胚层和内胚层。

Gastrulation of vertebrate embryos is the fundamental morphogenetic movement through which the three germ layers form : ectoderm , mesoderm and endoderm .