上核

A malignant transformant line 3T3 (T24) was obtained by transfection of mouse fibroblast NIH3T3 cells with pMAMneo-T24-ras plasmid. 3T3 (T24) cells were cultured continuously in the presence of benzamide , an NAD site inhibitor of poly polymerase .

将12位密码子突变的活化ras癌基因全cDNA序列克隆到真核表达载体pSV2neo和pMAMneo上，获得了相应的重组质粒pSV2neo-T24-ras和pMAMneo-T24-ras，将pMAMneo-T24-ras质粒利用基因转移方法导入小鼠成纤维细胞NIH3T3中，活化的ras癌基因可使受体细胞发生恶性转化。

Reaction coordinate calculations show that for all of these phosphodiesters the alkaline hydrolysis follows a one-step bimolecular mechanism initialized by the attack of hydroxide ion at the phosphorous atom of the ester.

反应坐标计算表明所有这些磷酸酯的碱性水解均遵循一步历程双分子反应机理，磷酸酯的水解由氢氧根对酯上的磷原子的亲核进攻开始。

Reaction .coordinate calculations show that for all of these phosphodiesters the alkaline hydrolysis follows a one-step bimolecular mechanism initialized by the attack of hydroxide ion at thephosphorous atom of the ester.

反应坐标计算表明所有这些磷酸酯的碱性水解均遵循一步历程双分子反应机理，磷酸酯的水解由氢氧根对酯上的磷原子的亲核进攻开始。

The adjacent La(1) on the chain connect lanthanide binuclear polymer with opposite direction.

一维螺旋链上相邻的La(1)沿着相反方向连接双核单元形成Z字形的层。

Compound (3) and (4) are isostructural compounds containing lanthanide binuclear dimer and 1-D lanthanide helical chain.

化合物(3)包括两种基本结构单元，由配体pydc上μ3-O桥连起来的镧双核单元和1-Dn螺旋链。

Binucleated granulocytes appear in benign and malignant blood diseases and can substantiate content in morphology. It is helpful for differential diagnosis among some blood diseases.

双核粒细胞在良、恶性血液病症中均可出现，对它进行观察，既有粒系形态学上的意义，又有助于一些血液病的鉴别诊断。

A small fraction of bacterial chromosomes (such as those in Streptomyces and Borrelia) is linear and possess telomeres, which are very different from those of the eukaryotic chromosomes in structure and functions.

一小部分细菌的染色体（如链霉菌属和疏螺旋体属细菌的染色体）是线性的并且具有端粒，但是它们的端粒与其他的真核生物的端粒在结构和功能上有很大的区别。

Hyperstriatum ventrale pars caudal nucleus ; Vocal centre ; Fiber connection ; HRP tracing method ; Carduelis spinus

上纹状体腹侧尾核；发声中枢；纤维联系； HRP追踪法；黄雀

The efferent and afferent projections of the hyperstriatum ventrale, pars caudal nucleus in carduelis spinus were investigated using anterograde and retrograde HRP tracing techniques.

用HRP顺、逆行追踪方法，研究了鸣禽黄雀端脑上纹状体腹侧尾核的传出投射。

It has been found that the activities of GSH peroxidase in nuclear opaque lenses induced by sodium selenite are twice as high as that in the normal lenses, but decreases in the advanced cataractous lenses.

结果表明，核浊浑期晶状体中GSH-Px的活性比正常晶状体的高一倍，但在整个晶状体浑浊时降低，GSSG-R的活性变化与GSH-PX相似，这两种酶在代谢上是相关的。

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。