定向的

Objective:To investigate the process of differentiation of adult rat mesenchymal stem cells into neuron-like cells in vitro and the following death.

目的：探索大鼠骨髓间充质干细胞(mesenchymal stem cell，MSCs)在体外定向分化为神经元样细胞的方法并研究其死亡的影响因素。

Methods HBV DNA was extracted from the serum of patient with hepatitis B. The X gene was amplified by PCR using the primers with EcoRI and HindⅢ digestion sites, and then cloned into pronucleus expression vector pMAL-C2X, which was detected by EcoRI and HindⅢ digestion and sequence.

从乙肝病人血清中提取HBV DNA；以带有EcoRI和HindⅢ酶切位点的引物，用PCR方法扩增X基因；而后定向克隆到原核表达载体pMAL-C2X上，经酶切鉴定和序列分析；以IPTG诱导X融合蛋白的表达。

Now targeted disruption of the Jhdm2a gene in mice shows that the enzyme is involved in spermatogenesis and regulation of transition nuclear protein and protamine genes.

现在对小鼠Jhdm2a基因的定向破坏表明，这种酶涉及精子生成和转换核蛋白及鱼精蛋白基因的调控。

At last, b-oriented Silicalite-1 zeolite films are synthesized on glass and quartz glass withseed method.

采用TPABr为模板剂合成定向Silicalite-1沸石膜是一种相对廉价的制作高品质沸石膜的方法，更有工业应用前景和价值。

The DPSK signal's influences on the performance of airborne radio compass including bandwidth, direction finding and beacon recognition, were analyzed in detail.

分析了DPSK调制对现有机载无线电罗盘的工作带宽、定向及台识别等性能指标的影响。

Objective To evaluate the curative effect of stereotactic gamma knife radiosurgery on brain arteriovenous malformations.

目的评估伽玛刀立体定向放射手术治疗脑动静脉畸形的疗效；探讨脑AVM的γ-刀治疗定位方法。

SA may change your Internet settings to redirect your homepage to another site.

SA可能会改变您的互联网设置您的主页重定向到另一个网站。

Daonol may change your Internet settings to redirect your homepage to another site.

Daonol可能会改变您的互联网设置您的主页重定向到另一个网站。

Lujer may change your Internet settings to redirect your homepage to another site.

Lujer可能会改变您的互联网设置您的主页重定向到另一个网站。

Downadup.B may change your Internet settings to redirect your homepage to another site.

Downadup.B可能会改变您的互联网设置您的主页重定向到另一个网站。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。