原肠

It showed that in conditions of water temperature 20～21℃,salinity 20～30,pH 8.0～8.3,the fertilized eggs developed to 2-cell in about 2h,blastula stage in about 15h,gastrula stage 30h and the hatched out larva 152h after fertilization.

其结果表明：在水温20-21℃、盐度20-30、pH值8.0-8.3的条件下，受精卵受精后2h为2细胞期、15h为囊胚期、30h为原肠期、55h为胚体期、152h孵出仔鱼

This is a process known as 'gastrulation'.

这一过程称为&原肠胚形成&。

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

细胞的这种向里推进标志着原肠胚形成的开始。

RT-PCR results showed that GDF8/11 gene was expressed in new fertilized cell, early gastrulation and knife-shaped embryo, which was different from that in mammals.

RT-PCR结果表明GDF8/11基因在新受精的细胞、早原肠胚和刀形胚胎中表达，这与哺乳动物中的情况不同。

RT-PCR results indicate the gastrulation and germ lines relating genes expression modes are different.

RT-PCR结果显示，在Wnt3a与Activin A共同作用下，原肠作用基因及三胚层发育相关基因表达的时间有差异。

Up to the stage called gastrulation, the cell aggregate may be divided artificially in two, and each remaining half will develop into a well-shaped individual.

直到原肠胚形成的阶段，细胞集合体也许人工地被划分成二个，并且各剩下的一半将显现出完整形状的个体。

PubMed abstract: Chordin is an abundant protein secreted by Spemann organizer tissue during gastrulation.

PubMed摘要：Chordin是原肠胚形成中，施佩曼组织器结构分泌的一种丰富蛋白质。

" During the second week following fertilization, gastrulation (cell differentiation and migration ) results in the formation of three tissue types."

受精之后第二周，原肠胚形成后，胚胎分化为三个组织类型

This intercalation event differs from the convergent extension movements of the mesoderm described in fish and amphibians4, 5, 6, 7, 8: it occurs before gastrulation and within a tight columnar epithelium.

多光子时差显微镜分析显示了与在鱼类和两栖类中所描述的运动不同的运动，这对脊椎动物胚胎学研究及原肠胚形成的演化研究有重要意义。

A variation in gastrulation involving the movement of cells into endodermal and mesodermal positions through the thickened primitive streak arose in reptiles and can still be seen in bird and mammalian embryos lending support to the theory that birds and mammals evolved from reptiles.

密实的原肠胚通过细胞运动进入内胚层和中胚层，爬虫，鸟，哺乳动物的胚胎都如此。因此提出这样的理论，鸟类和哺乳动物是由爬虫进化而来的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。