胚胎

The embryological characters of Castanopsis and Castanea are very similar, thus offer embryological evidence to the sister group relationship previously proposed by molecular study on Fagaceae.

栲属和栗属的胚胎发育是最相似，为壳斗科分子系统学中栲属和栗属是姐妹群的结论提供了胚胎学证据。

The variation to vitellin polypeptide was studied by SDS-PAGE during embryogenic and postembryonic development to Chrysopa septempunctata. The results indicated that vitellin was degradated constantly during embryonic development, and the bands of vitellin couldn't be detected in the 4th day of ovum development.

用SDS-PAGE研究了大草蛉胚胎发育和胚后发育过程中卵黄蛋白多肽的变化动态，结果表明，卵黄蛋白在胚胎发育过程中被不断降解，在卵发育的第4天已经基本上看不到卵黄蛋白的条带。

In the normal rats on gestational days 15 URS fuses with cloacal membrane, and on gestational days 16 anal membrane ruptures and rectum exposes to the outside.

①正常大鼠胚胎15天时尿直肠隔与泄殖腔膜融合。胚胎16天肛膜完全破裂，直肠与外界相通。

Chicken and quail intergeneric hybridization is a classic distant hybridization in fowl. In fowl science, chicken and quail belong to Aves, Galliformes, Phasiamidae, Gallus and Coturnix, and this hybridization combination has become the example of researching the incompatibility of different germ cell and sterile of distant hybridization.

鸡与鹌鹑杂交是属间杂交，其杂交种胚胎早期出现大量的死亡，并且杂交种出壳以前雌性胚胎全部死亡，这使鸡与鹌鹑杂交成为研究异种生殖细胞不亲和性和杂交种不育的典型。

Based on history retrospective study and modern research, the paper expounded that the developing course of embryo toxicity of traditional Chinese medicine is from cyesis abstinence to inheritance toxicity and reproductive development toxicity, and overviewed the research of active components of traditional Chinese medicine in the domains of inheritance toxicity and reproductive development toxicity.

笔者通过对胚胎毒性中药的历史回顾和研究现状分析，阐述了中药胚胎毒性由妊娠禁忌到遗传毒性和生殖发育毒性的衍变发展过程以及中药有效成分在遗传和生殖发育毒性中的研究概况。

And 1993 . In this thesis, we, for the first time, successfully isolated the full-length cDNA for the ECP 63, an embryogenic cell protein, from carrot (Daucus carota L.).

为实验材料，首次成功地分离了ECP63 cDNA全长，并以此cDNA为探针对其在体细胞胚胎发生和合子胚胎发生过程中的基因表达进行了深入的研究。

To expand through demonstrater to hybrid cattles.To expand through provicing fine embrgo and transplanting technology to breeding.

杂交牛规模化快速育肥技术通过生产示范进行辐射推广，繁育技术通过提供优秀母牛胚胎和胚胎移植技术服务进行辐射。

Furthermore, knockdown of Hspa5 rescues ventralized phenotypes induced by overexpression of Bmp2b; on the other hand, dorsalized phenotypes caused by Hspa5 knockdown disappear when Bmp2b mRNA is coinjected. It is likely that involvement of Hspa5 in dorsoventral patterning is associated with Bmp signals.

进一步研究发现，抑制Hspa5的表达能够挽救Bmp2b过量表达所导致的胚胎腹部化，Bmp2b的过量表达可使阻断Hspa5表达所引起的背部化表型减弱，提示Hspa5在胚胎背腹分化方面的作用可能与Bmp信号相关。

Mouse embryonic stem cells can give rise to ectodermal derivatives in culture and can be further induced into neurons and glia for cell-replacement therapies in the central nervous system and for use in drug discovery.

小鼠胚胎干细胞定向分化为神经细胞的研究进展小鼠胚胎干细胞（embryonic stem cell ， ES cell）体外培养可以分化成为外胚层组织，并进一步分化为神经元和神经胶质细胞。

Mouse embryonic stem cells can give rise to ectodermal derivatives in culture and can be further induced into neurons and glia for cell-replacement therapies in the central nervous system and for use in drug discovery.

小鼠胚胎干细胞定向分化为神经细胞的研究进展论文小鼠胚胎干细胞（embryonic stem cell ， ES cell）体外培养可以分化成为外胚层组织，并进一步分化为神经元和神经胶质细胞。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。