查询词典 embryo

Based on the experience and methods summed up by other researchers, the technique of cell culture was employed to study bovine follicular oocytes maturation, fertilization and the development of earlier embryo in vitro. The objective of this research is to upbuild and perfect a set of high-and-new-tech systems to obtain high-yield and high-quality bovine embryo, to provide technical operational regulations and ways and means to embryo engineering in practical production, to accumulate data for theoretical research.

本研究在总结前人研究的基础上，应用体外培养技术对牛卵母细胞体外成熟、体外受精及早期胚胎体外发育作了进一步研究，旨在建立健全一套完整的体外生产高产优质牛胚胎的高新技术体系，为胚胎工程和生产实践提供技术操作规程和方法，为理论研究积累资料。

The results were showed that embryogenic calli were induced from young leaves, which were cultured on MS medium supplemented with 2,4-D 2mg/L and KT 0.2mg/L. For the proliferation of embryogenic calli, the suitable culture medium was MS+BA 8mg/L +NAA 1mg/L. The development and maturation of somatic embryo could be much improved by using the medium of MS+ZT 2mg/L or BA 5mg/L +IAA 0.2mg/L. For the induction of secondary somatic embryo from integral somatic embryo, the suitable culture medium was MS+KT 0.1mg/L+NAA 0.01 mg/L or MS+ZT 0.1mg/L+NAA 0.01 mg/L, the proliferation frequency is 214%, 256% respectively. The cotyledonary generated from somatic embryos of Aesculus hippocastanum L.

本文就欧洲七叶树的组织培养和体细胞胚发生以及植株再生进行了系统研究，主要结果如下：以植物细胞具有全能性的理论为依据，以欧洲七叶树幼嫩叶片为外植体，进行体细胞胚胎发生研究，研究结果表明，诱导愈伤组织的适宜培养基是MS+2，4-D 2mg／L+KT0.2mg／L，MS+BA 8mg／L+NAA 1mg／L有利于胚性愈伤组织的诱导和增殖，添加ZT 2mg／L或BA 5mg／L和IAA 0.2mg／L的MS培养基有利于体细胞胚发育和成熟，体细胞胚可直接诱导次生胚发生，MS+KT 0.1mg／L+NAA 0.01 mg／L或MS+ZT 0.1mg／L+NAA 0.01 mg／L培养基诱导效果最好，增殖频率分别为214％、256％。

According to the mechanism of block of development in vitro culture on early embryo of mammal and in vivo surroundings of early embryo, the paper states that requirement and utilization of nutrients during each cell stage of early embryo of mammal in vitro culture in order to search for in vitro culture condition and method to improve the development rate of blastosphere.

摘要从哺乳动物早期胚胎体外培养发育阻断机理和早期胚胎的体内环境入手，阐述了胚胎体外培养各细胞阶段胚胎对营养物质的需求，寻求合理的体外培养条件和方法，以便提高体外胚胎早期的囊胚发育率。

The researchs on isozymes indicated that some varieties of isozyme loci present during the embryo development. There are 7 esterase loci and 5 acid phosphatase loci during the periods between nucellar filament and early globular embryo; both of Est and Acp appeared the most diversity in the stage of 8-nucleate embryo sac.

用聚丙烯酰胺凝胶电泳的方法研究鹤顶兰从指状突起出现到早期球形胚形成的全过程中酯酶、酸性磷酸酶的变化发现：这一过程中酯酶表达有7个同工酶位点，酸性磷酸酶有5个同工酶位点，两者均在八核胚囊时期变化最显著。

AIM: To explore the relations of the strains of embryo and pseudopregnant recipient to live birth rate of embryo transfer and the feasibility of mixed transfer of different embryo strains.

目的： 探讨不同受体鼠和供体鼠品系对胚胎移植成功率的影响以及不同品系胚胎混合移植的可行性。

To explore the relations of the strains of embryo and pseudopregnant recipient to live birth rate of embryo transfer and the feasibility of mixed transfer of different embryo strains.

探讨不同受体鼠和供体鼠品系对胚胎移植成功率的影响以及不同品系胚胎混合移植的可行性。

Except on the testis tissues,the expression of ZFY gene were found on the kidney tissues of human embryo or rat, brain vesicles〔rat embryo 13 days〕,and sclerotome cells〔rat embryo 13 days〕 It is possible that because kidney and genital system come from same origin,ZFY gene expressed on the kidney tissues too, the expressive function of ZFY gene on the embryonic brain vesicles and sclerotome cells is not yet clear.

除了在睾丸组织上表达外，ZFY基因还在肾脏组织及鼠胚脑泡(胚胎13天)，生骨节细胞(胚胎13天)上表达。在肾组织上表达可能是肾脏与生殖系统起源相同有关。在胚脑泡及生骨节细胞上表达其作用不清楚。

These results suggested that higher concentration of NaCl could cause the seed dormancy and accelerate the germination of ungerminated seeds. Perhaps there was a mechanism that the seed coat or embryo could prevent Na~+ from entering into the embryo so as to keep higher K~+ and lower Na~+/K~+ in the embryo. And it might be one of the physical mechanisms that the seed of Hibiscus hamabo Sieb.et Zucc. could resist high salinity stress. In addition, the annual seedlings of Hibiscus hamabo Sieb.et Zucc.

上述结果表明：高浓度的盐可以诱导海滨木槿种子休眠并促进盐胁迫解除后种子的萌发，这种机制可以使之避开不良的萌发条件，等到降雨使土壤溶液浓度降低再萌发，这是盐生植物的种子适应盐渍生境的一种有效方式；海滨木槿的种皮有阻挡Na~+进入胚的作用或胚具有某种拒Na~+的机制，使胚保持较高含量的K~+和较低的Na~+/K~+，这可能是海滨木槿种子耐盐的主要生理原因之一。

But embryo got through 2-cell block after H2O2 treatment occurred compensatory growth in later development, there were no differences with the embryo cell number and the cleavage index compared with normal developmental embryo.

但是经H_2O_2处理之后渡过2-细胞期阻滞的胚胎能在以后的发育中发生补偿性生长，其胚细胞数和分裂指数都和体外正常发育的胚胎没有差异。

Tetraploid embryo can be used as a power tool on life science such as on the research of mechanism in the inchoate embryo development which regulatory the cell volume, mumber and cleavage rate. Tetraploid embryo can also be used to change the ratio of genome of parents on the progeny; More importantly we can obtain completely ES cell-derived mice through tetraploid embryos complementation and the ES mice is significance in analysis of gene function and built disease mouse modle.

在生命科学研究中，四倍体胚胎可以作为研究机体发育的有力工具，例如，用它来研究早期胎儿发育过程中调节细胞体积、数目以及分裂速率的机制，也可以用它来改变双亲基因组在子代中的分配比例；更为重要的用途是通过四倍体补偿作用获得完全由ES细胞发育而来的个体，ES小鼠的获得对基因功能的分析、疾病动物模型的建立有十分重要的意义。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。