胚胎

As far as it is known from the history of embryo logy, little was known about the staging and classification of human embryo s until the twentieth century.

就胚胎学的历史而言，在20世纪之前，人们对人类胚胎的发育阶段和分类都知知甚少。

In this plan 84.8% Sparus macrocephalus embryos are able to keep forms comparative normal, however, revival has not been found so far.

三者配合虽然没有得到复活胚胎，但能得到84.8%胚体、卵膜、卵黄囊和油球等形态都基本正常的胚胎。

Embryonic Stem cellscan be derived from the early stage em bryos of mammiferous animals.

从哺乳动物早期发育阶段的胚胎中可以得到胚胎干细胞。

This process, called vasculogenesis ,involves the de novo differentiation of endothelial cell from mesodermal precursor to form the primitive blood vessel network.

血管生成是指在胚胎发生和器官形成过程中，从中胚层内皮细胞中分化出新的内皮细胞以形成原始血管网的过程，仅见于胚胎发生的早期，出生后即停止。

Monozygotic mouse twins were produced by micromanipulation of 2cell stage embryos and factors affecting the embryonic development were examined.

通过2—细胞期胚胎的显微操作产生了同卵双生小鼠，检验了一些影响胚胎发育的因素。

They are determination factors in skeletal muscle myogenesis. They consist of MyoD, myf5, myogenin and MRF4. They play an important role in embryonic muscle development. They can activate the expression of muscle specific gene. They express in a temporal and spatial pattern in muscle development.

成肌调节因子是一组转录因子，它们是胚胎时期骨骼肌发生的决定因子，该家族主要有4个成员：MyoD、Myf5、Myogenin和MRF4，它们在胚胎时期肌肉发生中起着重要的调控作用，能激活肌肉特异性基因的表达。

Human embryonic stem cells can differentiate into neuroepithelial progenitor cells in both feeder containing and feeder free systems,yet feeder free system has a relatively lower inductive efficiency with part of undifferentiated embryonic stem cells.

人胚胎干细胞在有饲养层和无饲养层体系中均可诱导分化形成神经上皮祖细胞，但无饲养层体系的效率相对较低，且有未分化胚胎干细胞残余。

Specificity of esiRNA-mediated RNAi in the neuroepithelium of postimplantation mouse embryos developing in whole-embryo culture. Figure 2 of Calegari, F., et al.

以esiRNA为媒介的RNAi在后期植入的鼠胚胎发育为完整胚胎过程中的神经上皮堜猁穛{的特异性。

Specificity of esiRNA-mediated RNAi in the neuroepithelium of postimplantation mouse embryos developing in whole-embryo culture. Figure 2 of Calegari, F., et al.

以esiRNA为媒介的RNAi在后期植入的鼠胚胎发育为完整胚胎过程中的神经上皮里所表现的特异性。

Vagina sponge bolt and CLO was used in oestrous synchronization of donors and acceptances , the rates of estrus was100.0% and 83.0%. 6mg FSH and CLO was used in superovulation of Hexi Fine wool goat,115 embryos were acquire totally and average14.4 embryos,100 useful embryos, average 12.5 embryos.The surgical operation used in embryos transplant, the rate of Gestation was 82.4%, 47 lambs was birth,and the birthrate of lamb was 167.9%.

采用阴道海绵栓结合氯前列稀醇法对供、受体进行同期发情处理，处理结果的发情率分别为100.0%和83.0%；采用 FSH剂量6m g/只结合氯前列稀醇对河西绒山羊超数排卵，共回收胚胎115枚，头均14.4枚，可用胚胎100枚，头均12.5枚；采用手术法对杂种河西绒山羊受体移植后，妊娠率82.4%，产羔47只，产羔率为167.9%。

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！