胚胎发育

The reasons that result the seed setting low are different in different autotetraploid rice line.

所以，双受精异常、胚胎发育异常和胚乳发育异常也是结实率降低的原因。

The soluble protein content decreased during embryonic development. Vitellin was a main component of soluble proteins. Besides, there were other soluble protein subunits such as 243 ku, 181 ku, 67 ku, 54 ku and 31 ku proteins.

可溶蛋白的含量在胚胎发育过程中逐渐降低；在成熟卵细胞和胚胎期，可溶蛋白在组成上以89ku和100ku的卵黄磷蛋白(Vitellin， Vn)为主，同时还存在243ku、181ku、67ku、54ku和31ku等其他一些蛋白亚基。40ku蛋白亚基仅出现在成熟卵细胞中，推测可能参与执行了特定的生殖功能。

The results showed that the expression of calm3 and trm112l genes had no remarkable differences in oocytes and 8-cells stage embryos, but were significantly different in blastocysts. It was supposed that these two genes were possibly maternal genes, and they might be involved in oocyte maturation and zygotic genome activation.

结果显示，在卵母细胞和8细胞期胚胎，基因calm3和trm112l的表达量无显著性差异，而在囊胚期的表达量与前两个时期的表达量存在显著性差异，推测这两个基因在牛胚胎发育过程中的表达可能属于母型调控，提示该基因在卵母细胞成熟和合子基因激活中起一定作用。

Bicoid is one of the important Drosophila genes involved in the control of embryo polarity arid larvae segmentation. The protein encoded by bicoid is a homedomain-containing transcription factor, which organizes a group of polycomb genes expressed in early development of embryo and therefore named morphogen.

Bicoid是调控果蝇胚胎极性及以后分节发生过程的重要基因，这一基因编码的蛋白是一种转录调控因子，对一组早期胚胎发育过程中的多齿基因的表达具有调控作用，并被称为形态发生剂。

Geoffroy contended that embryonic development recapitulated transformations of organisms in past eras when the environment acted on embryos, and that animal structures were determined by a constant plan as demonstrated by homologies.

杰弗罗争辩说，胚胎发育重演了生物体在过去纪元的转化，在过去纪元里环境对胚胎起到了作用；而动物的结构是由一个不变的设计决定的，如同源相似所表明的那样。

Objective To investigate the change of epidermal growth factor concentration in serum and villi of early pregnant women and its possible effects by mifepristone.

目的 探讨表皮生长因子对早期胚胎发育的影响和米非司酮对胚胎生长及EGF的作用。

We biopsied 1-2 single blastomere from 6-8 cell cleavage stage intracytoplasmic sperm injection embryo, and using nested PCR amplified the high frequently mutation region G380R of FGFR3 gene of the single blastomere. The products of PCR were digested by restriction enzyme Bfm Ⅰ, then the digested products were detected by 10% PAGE to see whether the embryo inherted the mutation of the patient and to screen out normal embryo transfer.

活检经胞质内单精子注射(intracytoplasmic sperm injection，ICSI)授精的胚胎发育至6～8细胞期的1～2个单卵裂球，采用巢式PCR扩增单卵裂球的FGFR3基因的高发突变位点G380R区域，用限制性内切酶BfmⅠ消化巢式PCR的内扩增产物，再经10%聚丙烯酰胺凝胶电泳检测有无遗传患者的该种突变，从而筛选出正常胚胎移植。

The present study was conducted to investigate the effect of different culture systems, co-culture cells and their sequence culture on the in vitro development of porcine parthenogenetic embryos derived from in-vitro matured oocytes.

经体外成熟、孤雌激活和培养获得猪胚胎，研究了不同培养体系、共培养体细胞和序贯培养对猪孤雌激活胚胎发育的影响。

In this process, the effect of many outside environmental factors can lead to abnormal embryo development, embryo death and fetal malformation.

在此过程中，外界环境中多种因素的影响都可能导致胚胎发育异常、胚胎死亡及胎儿畸形。

Early cleavage rate,embryo quality,the rate of blastocyst,implantation and pregnant rates from these zygotes were observed,and the transferred embryos were selected according to the pronuclei orientation and early cleavage time.

根据受精卵原核构型的不同分为四组，结合构型类型及早期卵裂与否进行选择性移植，通过观察优质胚胎率、囊胚形成率、种植率和怀孕率，来评估合子原核构型和早期卵裂与胚胎发育潜力的关系。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失