胚胎

Isolation, cultivation and identification of human embryonic NSC from cerebral cortex of 7-12 week abortus. By using flow cytometry and MTT assay, the effects of various concentration of TSPG and TSPG cooperating with cytokines in NSC culture media for 3 days on proliferation of human embryonic NSC has studied. By employing immunocytochemistry assay of the expression of tyrosine hydroxylase, the effect of different dilution of TSPG and TSPG cooperating with IL-1 on induced differentiation of human embryonic NSC into dopaminergic neuron has researched.

从7～12周人工流产胚胎脑组织中分离培养人胚胎NSC，免疫细胞化学鉴定NSC特异性nestin抗原表达，在NSC的培养体系中加入TSPG，采用流式细胞术和MTT法检测不同浓度TSPG以及TSPG与EGF，bFGF联合应用对人胚胎NSC增殖的影响；经免疫细胞化学检测培养细胞酪氨酸羟化酶表达，分析不同浓度TSPG以及TSPG与IL-1联合应用对NSC定向诱导为DA能神经元的影响。

Cleavage velocity and fragment amount of embryo were related to chromosome 21 aneuploidy.

胚胎卵裂的速度和胚胎碎片的多少与胚胎内部染色体的非整倍性存在着相关性。

BACKGROUND: Presently, the method of establishing human embryonic stem cells mainly contains blastula method, nuclear transplantation method and embryo blastomere method.

背景：目前人胚胎干细胞建系的技术路线主要有囊胚法、核移植法和胚胎单卵裂球法，但由于破坏胚胎，涉及诸多伦理问题。

From the difference of cleavage rate, rate of 4~8-cell embryo and rate of embryo of more than 8-cell, a best kind of semen for getting early embryonic blastomere cells in the lab could be screened out.

通过比较不同类型精液(鲜精、附睾精液和冷冻—解冻精液)IVF的卵裂率、4～8-细胞胚胎率以及8-细胞以上胚胎率差异，筛选出适合本实验室获得早期胚胎细胞来源的精液。

The blastula formation whose embryos were from different sources was compared and the blastomere number, quality classification and the relationship between the parity of the blastomere number and the blastula formation at d 3 were studied.

比较不同来源胚胎囊胚形成情况和d3胚胎的卵裂球数、质量分级等；并利用废弃胚胎囊胚形成情况对体外受精妊娠结局进行预测。

By statistic analysis, there were significant differences with the average cell number of each morulae, early blastula and blastula between in vivo and in vitro, there were no differences with the hatching of blastula between in vivo and in vitro.

经统计分析体内桑椹胚、早期囊胚、囊胚的每一胚胎平均细胞数与体外桑椹胚、早期囊胚、囊胚的每一胚胎平均细胞数有显著差异；扩张囊胚的体内，体外每一胚胎平均细胞数没有显著差异。

In addition, using RT-PCR to detect expression of centrin homogene during Urechis unicinctus spermatid deferentiation and early embryonic development. The result revealed that (1) expression of HsCEN1 homogene is present during spermatid defferentiation including spermtid and sperm, but not in adult tissues including body wall tissue,intestinal mucous memberane cells and cell in coelom succus;(2) expression of HsCEN1 homogene is not present in unfertilized oocytes but present in that of released polar bodies after fertilization and parthenogenesis oocytes treated with A23187;(3) expression of HsCEN1 homogene is present during early embryonic development including two-cell stage,multicell stage,gastrula to trochophora.

我们还用RT-PCR方法检测了Centrin同源基因在单环刺螠精子分化过程和早期胚胎发育过程的表达，结果显示：在单环刺螠精子发生过程中的精细胞、精子团、精子中都有表达，而在成体的体壁组织、消化道组织、体腔球中则没有表达；在未受精卵中没有表达，而在受精后释放极体的受精卵和经A23187孤雌激活的卵中则有表达；在单环刺螠的早期发育过程——二细胞胚胎、多细胞胚胎、原肠胚、早期担轮幼虫——中都有表达。

This review described the advancement of embryo implantation and molecular mechanisms of interaction between the conceptus and the uterine epithelial surface.It will provide theoretic bases for improving pregnancy rate,preventing early abortion of fetus and even developing convenient contraception methods in the future.

本文综述近年来在人类及相关动物胚胎着床的研究进展，并重点阐述在胚胎着床中存在于胚胎滋养层表面与母体子宫内膜上皮表面作用的相关信号联系及分子调控机制，以期对提高妊娠率、防止胎儿早期流产以及开发简便高效的临床避孕措施的研究提供理论依据和借鉴。

AIM: To detect the expressions of insulinlike growth factorⅠ in villus and IGFII in decidua and the levels in mother serum, and to explore their relationship with the embryogenesis of early pregnancy.

目的：探讨胰岛素样生长因子I和II在正常胚胎发育及早期胚胎发育终止绒毛及蜕膜组织中的表达及其在母体血中水平的改变与胚胎发育的关系。

The Institute for Stem Cell Research is primarily dedicated to research and education in stem cell including developmental immunology, embryonic patterning, developmental epigenetics, cardiovascular stem cell, embryo stem cell neurogenesis, developmental haematopoiesis, embryo stem cell biology, genome engineering, bioinformatics, early embryo development, etc.

爱丁堡大学干细胞研究所主要致力于干细胞的研究和教学，其学科领域包括发育免疫学，胚胎模式，发育遗传学，心脏血管干细胞，胚胎干细胞神经发生，发育造血作用，胚胎干细胞生物学，基因组工程，生物信息学，早期胚胎发育等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。