胚胎形成的

The top of neural tube forms basic encenphalic shape,namely endbrain, interbrain, midbrain and afterbrain. The abnormal closure of neural tube will result in neural tube detects. Encephalocoele is a common congenital malformation whose mechanism was no known. NO participates in the physiologic process of brain.

胚胎脑发育的早期阶段主要是神经板隆起、弯曲、闭合形成神经管，神经管的头部从前向后依次发育形成脑的基本组织形态，即端脑、间脑、中脑、后脑，在神经管闭合过程中出现异常就会导致NTD。

We found that TN-C was abundant in the early heart development of rats, it was suggested that TN-C reference to the early heart morphogenesis; TN-X was poorly expressed in epicardium in hearts of ED11.5, implied it may have something to do with the formation of the coronary artery.

TN-C在大鼠胚胎心脏发育早期表达丰富，对心脏的早期发育有一定关系；而TN-X在ED11.5于形成血管的心外膜细胞周围表达，提示TN-X可能与心脏早期冠脉等血管的形成有关。

The main content includes the metabolism and energy balance; the ontogenesis of biological rhythms; the development of nervous system and endocrinological regulating mechanisms; the factors affecting the fetal development and growth; the relationships of fetal development to the reproductive and reproductive abilities of adult animals.

主要内容包括胎儿的新陈代谢与能量平衡；生物节律的形成；胚胎期神经系统和主要内分泌器官的发生和调节机制的建立；影响胚胎发生发育的主要因素以及动物的发生发育与成年动物生产与生殖能力的关系。

Generally we think muscular histogenesis has many steps of biology, including foetal mesoderm merotomy; myoblast shapes in arthromera; myoblast can form muscular tissue to move to limbs; the proliferation of sarcoblast can increase cells\'quatity.

一般认为，肌组织发生是一多步骤的生物学过程，包括胚胎中胚层的分节；成肌细胞在体节形成；成肌细胞向四肢迁移形成肌组织；成肌细胞增殖以增加细胞数量。

Each of the four cells of the uppermost tier (that is, the tier farthest form the micropylar end of the ovule) begins to form an embryo.

每个在四个细胞中最上列(哪一是，列最远形成 ovule 的 micropylar 结束)开始形成一个胚胎。

This experiment aimed to systematically investigate and analyze the ethanol activated rates of mouse oocytes, affected factors of oocytes activation, types and development of parthenotes, and the organization and roles of the cytoskeleton during pronuclear formation and migration and early embryo cleavage by ethanol activation of oocytes, embryo culture in vitro and immunofluorescence cyto-chemistry. The results:(1) The ethanol activation of mouse oocytes showed that the activated and developmental rates of oocytes increased significantly with the increase of ethanol concentration and extension of exposure time, but over concentration and exposure time would result in increased fragment rates significantly. 7% ethanol treated oocytes for 7min was the optimum activated condition.

本实验主要利用卵母细胞的乙醇激活、胚胎体外培养和免疫荧光细胞化学方法对小鼠卵母细胞乙醇激活效率、影响因素、孤雌胚类型、发育、原核形成、迁移及早期胚胎卵裂过程中细胞骨架的组装、作用等进行了系统的研究和分析，结果显示：(1)小鼠卵母细胞的乙醇激活结果表明，随着乙醇浓度的升高和作用时间的延长，卵母细胞激活率和发育率都显著提高，但乙醇浓度过高和作用时间过长会导致卵母细胞碎裂率的显著增加，7%乙醇作用卵母细胞7min 为最佳激活条件。

During the early stage of Yanshan Movement in the Mesozoic Era, when the North China Plate had completed joining the Yangtze Plate to become a new united Craton massif, the tectonic movement turned to intracontinental orogenic stage, resulting in widespread magmatic activity and migmatization so that Tianzhu granitic batholith intruded the area on a large scale to form an embryo of the granite peak forest in the Tianzhu mountain area and ultrahigh pressure metamorphic zone further retraced its way, and consequently outcropped on the crust surface.

中生代燕山早期，华北、扬子板块已完成对接拼合，形成了新的统一的克拉通地块，构造运动已转入陆内造山阶段，引起广泛的岩浆作用和混合岩化作用，天柱山花岗质岩基大规模侵入，形成了区内天柱山花岗岩峰林胚胎，并导致超高压变质带进一步折返，并最终出露地表。

After transplanted in nude mouse for 8 weeks, DAC-MSCs can regenerate cementum-like structures and dentin-like structures. At the same time, we used limiting dilution assay to screen monoclonal cells from DAC-MSCs and discovered two kinds of phenotype cells: one is osteogenesis type, and the other is fibro singtype.

结果显示：牙根发育期根尖复合体来源间充质干细胞为异质性；具有显著的&胚胎性&组织特征：表现出极高的增殖活性、克隆形成能力和体外多向分化能力；在体内可以异位形成类牙骨质和类牙本质样矿化结构。

At the prehatching stage, jaw teeth, goblet cells and taste buds appeared, the stomach was differentiated. Longitudinal folds of the stomach epithelium could be seen, which gradually became more and more prominent. The intestinal convolution and the pancreas also appeared.

胚胎发育至孵化前期时，颌齿、杯状细胞和味蕾出现，胃已分化形成，胃粘膜层具较浅的纵行褶皱，肠管已形成一个回曲环，胰脏出现。

During embryogenesis,the axial skeleton is formed by a process called somitogenesis, which produces transient segmental tissue known as somites.Disruptions in somitogenesis have been shown to result in vertebral malformations,including segmentation failure and formation failure.

在脊柱发育的胚胎期，形成一种重要的过渡性组织-体节，体节决定中轴骨的形成，已经证明体节发育受影响可导致脊椎畸形，包括脊椎形成障碍和脊椎分节不良。

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