卵细胞

The mature egg cell was an inactive cell with only a few polysomes. At the early zygote stage, a large number of ribosomal precursors were produced by the nucleolus, and many polysomes appeared in the cytoplasm, which suggests a high level of metabolism. Zygote at the dormancy stage had a small nucleolus and marked decrease in ribosomes, as shown by a few polysomes, which suggests decreased metabolism. Zygotes in the prophase of mitosis and two-celled proembryo became active again in metabolism, for a prominent nucleolus, high density of ribosomes and increased number of polysomes in the cytoplasm.

结果如下：在成熟卵细胞中多聚核糖体数量不多，且细胞代谢活性较弱；初期合子内，核仁大量合成核糖体前体物质，胞质中多聚核糖体数目众多，细胞代谢活性较强；休眠期合子的核仁变小，胞质中核糖体数量急剧减少，仅有少量多聚核糖体，细胞代谢活性较弱；合子分裂前期和二细胞原胚期，核仁显著，胞质中核糖体的密度增加，出现大量多聚核糖体，细胞代谢活性较强。

To establish a mouse microinsemination model, Intracytoplasmic sperm injection and subzonal sperm injection were studied use mouse gamets.

我们用小鼠卵细胞胞质内精子注射和透明带下精子注射的方法，对显微授精过程进行了初步探讨，对配子的采集和准备、精子的优化及显微注射的操作等作了阐述。

As the first attempt, it was designed to reveal the general pattern of lectin receptor distribution on the surface of female cells, namely egg cells, central cells and synergids of Torenia fournieri and, especially, toensure the possible effects of cell isolation procedure on the distribution of lectin receptors by four different systems.

在烟草活体的中央细胞及卵细胞表面发现了伴刀豆凝集素受体的极性分布或者称之为&镶嵌性分布&。在大部分的中央细胞膜表面，该凝集素受体主要分布在靠近核的部位，而在相对侧的荧光要弱或缺失。

So a fertilized egg is an example of totipotency.

受精卵细胞就是一种全能干细胞。

So instead, researchers led by Hananel Holzer remoed unmatured egg cells from the woman's oaries and used hormones to coax them to maturity in the laboratory.

所以，由Hananel Holzer领衔的研究者们从这名女性的卵巢内取走未成熟的卵细胞，并在实验室中利用激素来促进它们的成熟。

The word "evolution," in fact, originally meant the unrolling development of an egg cell into an embryonic creature.

实际上，&进化&这个词，最初只是用来表示一个卵细胞分裂扩展成一个胚胎生物的过程。

The word "evolution," in fact, originally meant the unrolling development of an egg cell into an embryonic creature.

实际上，&进化&这个词，最初只是用来表示一个卵细胞分裂增殖扩展成一个胚胎生物的过程。

The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so.

摘要樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合，进行受精作用，其后，受精卵进行游离核分裂，形成8个子核时，开始形成细胞壁。

In the middle of last century,biologists put a somatic cell nucleus of a frog into an enucleated egg cell,then created a clone tadpole.

在上个世纪中期，生物学家把青蛙的体细胞核放入青蛙的去核卵细胞里，结果制造出了克隆蝌蚪。

Howeer, at least one group has made it to the first step--creating a human blastocyst by inserting the nucleus of an adult skin cell into an enucleated oocyte Science, 28 April, p.

然而，至少有一个研究小组已经走出了第一步，通过将一枚**皮肤细胞的细胞核植入一枚去核的卵细胞培育了一个人类胚泡（科学，4月28日，516页）。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。