与水生和海洋生物不同，陆生植物不能总是依靠水流来携带它们的生殖细胞和分散它们的受精卵。
Unlike aquatic and marine forms, land plants cannot always rely on water currents to carry their sex cells and disperse their fertilized eggs.
发生此类现象是因为一个嵌合双胞胎会产生于没有得到雄性动物施精的卵, 但它会在某些皮肤细胞中含有该雄性动物的遗传基因.
This couldhappen because a chimeric twin that grew from an egg which his sperm did notfertilise would nonetheless have some skin cells containing his genes.
在某些卵里基因物质在随意位点与染色体整合而成为老鼠细胞的遗传物质。
In some of the eggs, the genetic material integrates at a random site on a chromosome and so becomes part of the mouse cell's genetic material.
伍德乐夫说，这项发现能使研究员们了解营养细胞（颗粒细胞），也就是支撑和环绕逐渐成熟的卵的细胞，如何与卵细胞联系。
The discovery, Woodruff said, will enable researchers to understand how nurse cells (granulosa cells), the cells that support and surround the maturing egg, communicate with the egg.
威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。
Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.
用琼脂糖凝胶电泳检测两类卵的颗粒细胞凋亡。
Granulosa cell apoptosis was detected by agarose gel electrophoresis.
任何一种动物，每个细胞都包含着来源于受精卵的完全相同的DNA。
In any animal, every cell contains exactly the same DNA, and that DNA comes from the zygote.
她说，使一个未受精卵开始发育的想法并不是新的，但是这些研究者通过提取干细胞使这种想法向前迈了一步。
The idea of starting embryonic development without fertilization isn't new, she said, but these researchers have taken it a step further by generating stem cells.
成熟胚囊包含卵器(由两个助细胞、一个卵细胞组成)，中央细胞及三个反足细胞。
A mature embryo sac is composed of egg apparatuses (two synergids and one egg cell), central cells and three antipodal cells.
卵细胞成熟时，有卵外膜，结构复杂。
The mature ootid has the outer membrane with complex structure.
成熟胚囊为蓼型胚囊，它包括卵器，一个中央细胞和三个反足细胞。
The mature embryo sac contains an egg apparatus, a central cell and three antipodal cells.
研究人员首次招募女性捐卵者进行干细胞实验研究。
Female egg donors are to be recruited by researchers for stem cell experiments for the first time.
结果卵圆细胞在培养过程中倍增时间逐渐缩短，非整倍体染色体数目增加，在软琼脂中生长的克隆增多。
Results During long term cultivation, the population doubling time of the cells became shorter and the percentage of aneuploidy chromosomes and colonies grown in soft AGAR increased.
成熟胚囊被珠被绒毡县包围，由卵器、具次生核的中央细胞以及数目为1至6个反足细胞组成。
The mature embryo sac is surrounded by en lothelium tapetum. It is composed or an egg apparatus, one central cell with secondary nucleus, and 1—6 antipodal cells.
综合上述结果可以看出，6 -DMAP对小鼠卵母细胞的激活作用时间窗口具有卵龄依赖性但与起始刺激后的时间关系不大。
From the above results, we concluded that the temporal window for action of 6-dmap on the oocytes depended on the egg age of oocytes but independent of the starting time of the treatment with ethanol.
当肝脏发生严重损伤且肝细胞再生障碍时，卵圆细胞被激活并大量增殖，参与肝脏损伤的修复与重建。
Oval cells are activated to proliferate and regenerate liver tissue when the liver damage is extensive and chronic, or if proliferation of hepatocytes is inhibited.
目的：观察小鼠哮喘模型气道卜皮内肥大细胞的数量，进一步阐明肥大细胞在鸡卵清蛋白（OVA）诱导的小鼠哮喘模型中的作用。
Objective:To investigate the number of mast cells and clarify the possible role of mast cells in the development of ovalbumin(OVA)-induced asthma model in vivo.
目的探讨卵圆细胞在进行性肝损伤过程中的分布及迁移规律。
Objective To explore the distribution and migration of oval cells in progressive hepatic injury.
此三型卵圆细胞均有细胞内张力微丝和细胞间连接结构。
Intracellular tonofilaments and intercellular junctions were seen in all three types of oval cells.
卵丘细胞对卵母细胞内的谷胱甘肽合成起重要作用。
Cumulus cells play an important role in the intracellular GSH synthesis in oocyte.
对照组卵丘细胞重构囊胚中9个囊胚中分离出es细胞样集落，5个ES细胞样集落可稳定传代。
In control group es cell -like colonies were harvested from 9 blastocysts, in which 5 es cell-like colonies could be passaged successfully.
动物性极：与包含细胞核和多数细胞质的植物性极相对的卵的部分。
Animal pole: the portion of an egg opposite the vegetal pole that contains the nucleus and MOST of the cytoplasm.
卵室内含有不同发育阶段的卵母细胞。
The egg Chambers contain the oocyte at different development phases.
电镜下观察可见：甲醛的中、高剂量组卵母细胞崩解液化，周边的卵丘细胞内线粒体肿胀及空泡变；
The mitochondria of oocytes and cumulus cells in high and medial dose groups swelling and vacuolar degeneration, but rough surfaced endoplasmic reticulum (RER) were normal and abundance.
MSC在肝内可演变为卵圆细胞、肝细胞及胆管细胞。
MSC can differentiate into oval cells, hepatocytes and biliary hepatocytes.
目的：探讨卵丘细胞在玻璃化冷冻中对小鼠卵母细胞发育潜能及细胞骨架的影响。
Objective: Study the effects of cumulus cells on the developmental potential and cytoskeleton of mouse vitrified-thawed oocytes.
高浓度雌二醇对卵黄发生前期卵母细胞卵径增大也有明显刺激作用（P＜0．01）；
High concentration of oestradiol had a significant stimulation (P<0. 01) on oocyte diameter increase at the previtellogenesis stage.
结论通过卵细胞第一极体形态可预测受精卵及卵裂期胚胎质量。
Conclusion Zygotes and embryo quality can be predicted by morphology of the first polar body.
然而，结果却是具有替代细胞核的卵至少有时可以正常发育。
It turns out, however, thAT an egg with a replacement nucleus can, AT least sometimes, develop normally.
然而，结果却是具有替代细胞核的卵至少有时可以正常发育。
It turns out, however, thAT an egg with a replacement nucleus can, AT least sometimes, develop normally.
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