胚胎形成的

During early pregnancy, the endometrial cells can form atemporal permeability barrier around the embryo to protect it from the maternal harmfulenvironment.

在妊娠早期过程中，为了保护胚胎免受母体不利环境的侵害，子宫内膜细胞在胚胎的周围形成了一个短暂的渗透屏障。

Embryology: Study of the formation and development of an embryo and fetus.

胚胎学：研究胚胎和胎儿的形成和发育的学科。

The increase of ganglion volume mainly lied in growth of neurons and increasing of nerve fibers and neuroglia cells, but not lied in marked increase of neurons in number.

山羊胎儿脊神经节于胚胎第6周就已形成，但此时节内神经元形态不清晰，至第8周，节内神经元形态逐渐清晰，节内神经纤维数量少；随着胚胎发育，节内神经元数量并不显著增加，而是节细胞之间神经纤维及胶质细胞的增多和神经元个体的增长，从而使神经节的体积逐渐增大。

The functions of HIF during the processes of embryo implantation, placentation, embryogenesis and male reproduction in mammals will be reviewed in this article.

本文综述了HIF在哺乳动物的胚胎著床、胎盘形成、胚胎发生以及雄性生殖等过程中的作用。

On the other hand, in spite of the severely distorted axis, the FoxD5-overexpressed embryos displayed neither somite nor muscle defects. Based on these results, we speculate that FoxD5 plays different roles in axis and somite formation. During somitogenesis, FoxD5 functions in the maintenance of the anteroposterior polarity of somites, and in turn plays roles in proper formation of somites.

另一方面，观察过量表现FoxD5的胚胎，发现体节及肌肉发育没有明显异常，但体轴发育则产生严重畸形的性状；根据上述观察结果，推测FoxD5可能在体节及体轴发育上扮演不同角色：在体轴发育时，FoxD5则可能参与於胚胎轴向决定；而在体节中，FoxD5具有维持体节前后极性进而促使体节正常形成之功能。

The ability of melanoblasts in the Silkie embryos to migrate ventrally is correlated with a lack of peanut agglutinin binding barrier tissues, which are present in the Lightbrown Leghorn embryos.

丝羽乌骨鸡的黑色素母细胞之所以可以移动至腹部是由於其缺少了神经阻碍物分子，而此神经阻碍物分子在棕色来航鸡的胚胎发育过程中，会明显地形成一道障壁以抑制神经嵴细胞和黑色素母细胞入侵胚胎腹部。

Based on the pathological findings and the sequence of embryonic development, we speculated that the sequestrated extrapulmonary lung, which occurred in the development of the fetus, might have occupied the site of the pleuroperitoneal canal and hindered its complete closure, hence forming the diaphragmatic hernia.

根据病理发现及胚胎发展，我们推测也许肺叶外游离肺在胚胎发育时占据了肋腹膜间的通道且阻碍它完全的关闭，而形成横隔膜疝气。

The reseach on activity changes of SOD, POD and CAT during the somatic embryogenesis of Y35 showed:(1) The activty of SOD was from 52.98 to 133.20 U·g-1·h-1, and remained a rising trend after early single embryo forming, this revealed that SOD might be positively correlated to the differentiation of embryogenic cell and the development of somatic embryo.(2) The activty of POD was from 0.05 to 0.50 U·mg-1·min-1, ascended firstly and desceded later, and was highest in embryogenic callus and lowest in late single embryo , this revealed that POD might be positively correlated to the division and differentiation of proembryo mass, while negatively correlated to the development of PEMⅢto late single embryo.(3) The activty of CAT was from 0.86 to 2.81 U·mg-1·min-1, showed an up-down-up trend, reaching to the highest peak at the time of early embryo formating and decreasing to the lowest at the time of early cotyledonary embryo formating, this revealed that CAT might be positively correlated to the development of early single embryo, while negatively correlated to the formation of middle single embryo and early cotyledonary embryo.The changes in activty of SOD, POD and CAT indicated these three antioxidant enzymes coregulated the differentiation and development of embryogenic cells during Larix somatic embryogenesis.4. Differentially expressed cDNA libraries of the stages of proembryo mass and somatic embryo maturation were successfully constructed by suppression subtractive hybridization.

对Y35体细胞胚胎发生过程中抗氧化酶活性变化的研究显示：(1)SOD活性在52.98~133.20 U·g-1·h-1之间，并在早期单胚形成后一直保持上升的趋势，表明其与胚性细胞的分化及体细胞胚的发育均具呈正相关；(2)POD活性在0.05~0.50 U·mg-1·min-1之间，呈现出先下降后升高的趋势，在胚性愈伤组织中最高，而在后期单胚形成时降至最低，表明其与原胚团的分裂和分化呈正相关，但与PEMⅢ向后期单胚的发育呈负相关；(3)CAT活性在0.86~2.81 U·mg-1·min-1之间，表现出升-降-升的变化趋势，在早期单胚形成时升至最高，在早期子叶胚形成时降至最低，表明其与早期单胚的发育呈正相关，而与中期单胚和早期子叶胚的发育呈负相关。

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。

Lab.of Genetics and Breeding of Crop,South China Agr.

本文以单胚水稻IR36作为对照，系统观察了多胚水稻品系APⅣ的胚胎发生过程，包括胚囊的形成、发育、受精及其胚胎发育；。。。

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