胚胎发育

ABSTRACT Amphioxus, a cephalochordate, is the closest living relative to vertebrate, and has been widely known as the most important animal...

文昌鱼是介于无脊椎动物和脊椎动物之间的过渡类型，是研究动物进化和胚胎发育的典型材料。

ABSTRACT Amphioxus, a cephalochordate, is the closest living relative to vertebrate, and has been widely known as the most important animal to study the origin and evolution of vertebrates.

文昌鱼是介于无脊椎动物和脊椎动物之间的过渡类型，是研究动物进化和胚胎发育的典型材料。

RESULTS: Thirty-two cases were anencephalia, 31 hydrocephalus, 4 hydroancncephalus, 11 neningocele or encephalomeningocele, 25 spinal meningocele with myeloschisis, 12 Dandy-Walker deformity, 11 schizencephaly of forebrain and 22 choroid plexus cyst among the 148 fetuses. There were different expressions in various CNS deformities, which were correlated with abnormal development of embryo.

结果：148例中枢神经系统畸形胎儿中，无脑儿32例，脑积水3l例，积水性无脑4例，脑膜或脑脑膜膨出11例，脊柱裂脊膜膨出者25例，Dandy-Walker畸形12例，前脑无裂畸形11例，脉络丛囊22例，不同类型的中枢神经系统畸形有不同声像图表现，并与其胚胎发育过程异常相关。

Order in which they are expressed from anterior to posterior in the developing embryo .

这类基因常常成簇出现，在胚胎发育过程中，其活化顺序与生物纵轴的空间表达时相相符。

Keywords: Artemia from China;early embryonic development;related genes;mRNA differential display

中文关键词：中国卤虫；早期胚胎发育；相关基因；mRNA差异显示

In this experiment, the related genes of early embryonic development of Chinese Artemia Pathenogenatica have been studied by mRNA Differential Display.

本研究采用mRNA差异显示方法分离中国孤雌生殖卤虫早期胚胎发育相关基因。

The fragments showing low degree of similarity to previously reported genes may be new genes. The further research on these sequences is very useful to obtain the complete genes and to know the mechanism of early embryonic development of Chinese Artemia Parthenogenetica.

其它同源性较低的片段可能为未知新基因，对这些序列信息进行进一步研究将有助于获得完整基因和了解中国孤雌生殖卤虫早期胚胎发育的机制。

There were existed differentially protein expression in embryo of Artemia sinica during development process.The specific protein might be related to embryo development.

在蛋白质表达水平上，0h、5h、10h、15h、20h五个时期的蛋白存在显著差异，并且这些差异蛋白可能与胚胎发育有关。

Embryo development and origin of twin-embryo of autotetraploid rice with twin-embryo seedlings were observed and verified.

利用激光扫描共聚焦显微技术对同源四倍体双胚苗水稻的受精过程、胚胎发育过程和双胚来源进行观察鉴定。

In addition, the above three media could also support the development of 1 cell embryos to hatching blastocyst stage.

实验2的结果表明，在M16培养液中单独添加2.5mmol/L的牛磺酸也可支持体外培养的昆明小鼠1-细胞胚胎发育到囊胚。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。