胚胎发育

LeY antigen exists in embryo cell, endothelial cell and neutrophilic granulocyte.

LeY抗原主要见于发育早期的胚胎、内皮细胞以及中性粒细胞。

Here we show that a nucleolar protein, Lyar which has been reported to be highly expressed in mouse early development and certain leukemia cells, plays an important role in proliferation of ES cells.

本课题研究了一种在小鼠发育早期高表达的核仁蛋白，Lyar，对小鼠胚胎干细胞的增殖作用及其机制。

In order to understand these differences on gene transcript level, even to get the genes and their expression related to cell culture, we researched the differences of total mRNA of these tissues by RAPD-PCR, the result showed that the difference between embryo and head of nymphae was much closer than embyo with others, which was accorded to the time order of insect upgrown, and the tissue which is more different from embryo on transcript level ismore diiBcult to be cultured in vitro.

四种组织的培养难易程度和分离出的细胞形态的不同，说明存在着组织表达的差异，为了从转录水平上来认识它们的差异，甚而获得与细胞培养难易相关的基因及其表达产物，本实验还采用了RAPD分析的方法进行了这四种组织：中后期虫卵胚胎、若虫头部组织、成虫的精巢和卵巢的mRNA表达差异研究，结果表明：从发育方向上看，四种组织的表达差异有分化越大差异系数越大的趋势，而在相同条件下则越难培养。

The students are required to study and understand the main physiological features of fetuses and the ontogenesis of the most important regulating axises during the fetal development .

中文简介：通过本课程的学习使学生在学习动物胚胎学以及相关课程的基础上，进一步认识动物主要器官或系统的发生发育过程，相关的调控机理；以及动物主要调节轴系的发生和建立。

These findings are consistent with the previous knowledge that IGF-2 is mainly expressed during the embryonic phase, IGF-1 is mainly expressed during the postnatal period, which could promote cell proliferation and ontogenesis.

这与IGF-2主要在胚胎期发挥作用，而IGF-1则主要在动物个体出生后才发挥促进细胞增殖和个体发育功能的特点相符。

Ooplasmic transfer increases the fertilizability of the aged oocytes and the early embryonic viability, it has led to the birth of health babies, and become a hotspot in the realm of human assisted reproduction biotechnology and animal clone.

卵胞质转移技术能有效改善老龄卵母细胞的受精能力和早期胚胎的发育能力，在人类已有健康后代出生，它已成为人类辅助生殖生物技术和动物克隆研究的新热点。

Results 68 cases in the treatment group continued pregnancy to deliver, 2 patients' embryo didn't develop. 41 cases in the control-group continued pregnancy, 28 cases developed to inevitable abortion, and 1 case was oviductal pregnancy.

结果 治疗组中68例继续妊娠至分娩，2例胚胎未发育；对照组中41例继续妊娠，28例发展为难免流产，1例输卵管妊娠。

Methods PESC lines were derived from parthenogenetically activated blastocyst inner cell mass of different mice strains and cultured in different systems.

将小鼠MⅡ期卵子孤雌激活发育至囊胚，然后从囊胚内细胞团分离孤雌胚胎干细胞。

Neurogenesis and development of the central nervous system in the embryo stage of swimming crabs, Portunus trituberculatus, were studied by the histological method.

应用组织学方法研究三疣梭子蟹胚胎期中枢神经系统的发生和发育，光学显微镜下镜检切片，在第二期卵内无节幼体阶段开始观察到脑；第二期卵内状幼体阶段，前脑由视神经层、侧原脑和中央原脑组成，与位于食道两侧的中脑和后脑形成完整的脑。

So the ability to purify, culture, and manipulate these postembryonic stem cells would provide investigators with an invaluable cell source to study cell and organ development.

因此，对于研究发育生物学而言，能够分离纯化、培养和有效利用胚胎后亚全能干细胞，无疑具有非常重要的意义。

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。