胚胎发育

It provides a reliable basis for further functional researchment of silkworm genes. Based on the work, 2 maternal genes vasa and mago nashi, a group of silkworm specific homeobox genes and one homeotic gene AbdB were cloned, and their expression pattern and functions were investigated.

而分析所鉴定的参与家蚕胚胎发育调控级联的同源基因以及homeobox同源基因为进一步的功能研究提供了可靠的数据和信息。

Hox gene plays a key role in gastrointestinal tract development and differentiation of vertebrates.

Hox基因在脊椎动物消化道胚胎发育及分化形成中具有重要作用。

The functional target of the microRNA appears to be the HOXD10 gene, one of the Hox gene family involved in directing embryo development.

微RNA的功能目标似乎是HoxD10基因，它是参与引导胚胎发育的Hox基因家族的一个成员。

During embryonic development, Hox proteins can interact with different cofactors and regulate downstream gene expression in a tissue specific manner.

在胚胎发育过程中，Hox蛋白实现时间特异性及组织特异性基因表达调控功能的机制之一是与不同的辅助因子相结合。

The hybrid between Brachymystax lenok and Hueho taimen were not a live in the past 2 years. However, the fertility and eyed rate of BH were significantly higher than that of HH and BB (P.05), while the hatching rate were significantly lower (P.05). The larvae died within 1 to 2 hours after hatching. It was observed that the tail of yolk-sac larve couldn't stretch around the yolk, and there were hyperemia in the middle and posterior segment of the tail. The reason why the hybrid between Brachymystax lenok and Hucho taimen couldn't snrvive might was the karyoplasms of the gametes from Brachymystax lerwk and Hucho taimen by distant hybridization were not compatible.

细鳞鲤×哲罗鱿的杂交经过2年多批次实验均未得到成活杂交子代，但在胚胎发育阶段BH的杂交受精率、发眼率均显著高于双亲自繁对照组(P.05)，但其孵化率显著低于双亲对照组(P.05)，BH杂交子代在破膜后1~2h内即死亡，刚破膜的仔鱼尾干中后段至尾鳍部分盘绕于卵黄囊表面不能伸展，且所有破膜仔鱼的尾干中后段均存在充血点，本研究认为，这种反交［细鳞鲑×哲罗鲑］子代不能成活的原因可能是由远缘杂交受精卵核质不相容所导致。

The use of retrovirus-mediated insertional mutagenesis in zebrafish has led to the mutation and rapid identification of hundreds of genes required for embryonic development and cell growth.

运用反转录病毒介导的插入突变技术，在脊椎动物斑马鱼中已经获得了许多影响胚胎发育和细胞生长过程的突变体，并找到了对应的基因。

Malrotation is defined as an anomaly of rotation and fixation of the midgut.

肠回转不全，是指肠腔在胚胎发育阶段，肠的旋转和固定发生异常。

According to our knowledge, there have been a few reports on this field, but none was related to use meiotic inhibited agents for promoting oocyte developmental competence.

有关这方面的研究报道还不多，尤其在以核成熟抑制剂对卵母细胞产生抑制，并观察其后的胚胎发育活性方面。

The in vitro meiotic process and developmental competence of buffalo oocytes from different size follicles was investigated.

探讨了不同大小水牛卵泡卵母细胞体外成熟过程中的减数分裂进程及其胚胎发育潜能。

The results indicated that meiotic inhibition in vitro could be used as a tool in the study of the mechanisms involved in acquisition of meiotic and embryonic competence.

因此，卵母细胞成熟的可逆性抑制可用于研究卵母细胞成熟及其胚胎发育活性的机制。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。