胚胎发育

This model imitates the whole procedure of early embryonic vascular development and can be used to investigate chemotactic influences of different growth factors on VSMCs.

该模型能够模拟胚胎血管发育早期全过程，可用于研究不同生长因子对VSMCs趋化的影响。

In resent year, several in vitro models for committed differentiation of ES cells have been described which give rise to a variety of cell types, including hematopoietic, neuronal, chondroitic, osteocytic, endothelial, myogenic, cardiac and smoothes muscle cells, but the committed differentiation into epidermal stem cells have not been reported.

ES细胞为研究基因功能、胚胎发生和个体发育，及组织细胞分化机理提供了理想的模型。近年来的研究表明，适当条件下，ES细胞可定向分化为三个胚层的各种类型的细胞，其中包括向神经元、造血细胞、成骨细胞、心肌细胞、血管内皮、软骨细胞、平滑肌特方向的定向分化。

There were 2 peaks of starch accumulation in the process of somatic embryogenesis,the first time was at the stage of embryogenic callus,the second time was at the stage of globular embryoids;and a small raise appeared at the stage of torpedo-shaped embryoids,and the content of starch was slightly higher than those of heart-shaped embryoids and cotyledonary embryoids.With the development of embryos,the tendency of the changes of the content of DNA,RNA and the total nucleic acids was approximately similar,and the peak values were all at the stage of cotyledonary embryoids,and the change of the content of RNA was more remarkable than those of DNA and the total nucleic acids.The tendency of change of the content of proteins almost took on the S-shaped curve.

结果表明：龙眼胚性愈伤组织体胚发生过程中淀粉有2个累积峰值，第1次出现在胚性愈伤组织阶段，第2次出现在球形胚阶段，在鱼雷形胚阶段又有一个小回升，这时淀粉积累较心形胚和子叶形胚阶段高一些；随着胚胎的发育，DNA、RNA、总核酸含量的变化趋势大致相同，最高点均出现在心形胚阶段，其中RNA含量的变化较DNA、总核酸含量明显，蛋白质含量的变化曲线呈&S&形。

Embryologically, the abnormality most likely develops at gestational weeks four to eight. It is hypothesized that impaired venous outflow, caused by loss of normal connections between cortical veins and dural and calvarial circulation, results in persistent, primitive vascular plexus.

胚胎学上，发育异常最可能发生在孕期的第4-8周，其发病机制被认为是静脉流出受损，这是由于皮层静脉与硬膜及颅盖静脉循环之间的正常连接出现障碍，导致原始血管持续存在。

The study suggests that chronic embryonal effects of microwave pulse on embryo for the functional development of nervous system can be conducted by change of NMDA-activated channel property.

非热及微热功率微波的慢性胚胎效应对神经系统功能发育的影响可以通过NMDA受体通道特性的改变而实现。

We mainly to cured on the mechanism of kidney development, inducing of embryonal kidney development in vivo as well as the status in quo of using stem cells in kidney diseases therapy.

包括：体外诱导胚肾组织发育；体外诱导干细胞向肾脏细胞的分化；骨髓、成体肾和胚胎肾来源的干细胞用于肾脏疾患治疗的研究。

Embryonal retina could survive and remain its original growth and development rule after intracerebral transplantation, which has same structural characters as normal retina.

胚胎视网膜脑内移植后能存活且保持原有的生长发育规律，具有正常视网膜一样的组织结构特征。

The water concentration declined during the incubation in the four types of embryonated eggs, especially in the 14 to 18 days.

鸡胚蛋随着胚胎的发育和成熟，其水分含量几乎呈直线下降。

Clone the embryonated egg and is used for measuring various hereditary diseases, the fetus of the development among embryo and uterus that clone

将受精卵克隆用于检测各种遗传疾病，克隆的胚胎与子宫中发育的胎儿遗传特征完全相同。

Embryonated eggs are edible eggs during incubated period. It is gift of food, nutrition and curative by its fresh taste and great efficacy.

鸡胚蛋就是受精鸡蛋经特殊孵化工艺，胚胎不断生长发育，可食用的具有生命力的鸡蛋。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。