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In most SIVs, they found, one role of nef is to remove a protein called TCR-CD3 from the surfaces of the cells that host the virus.

他们发现，在大多数猿免疫缺陷病毒中，nef基因的一个功能就是从其寄生的细胞表面去除一种称作TCR-CD3的蛋白质。

It can be in the form of spurious signals If the amplitude of these spurious signals is outside agency-reference-recommendation value, they could cause undue disturbances to other users by entering the receiver systems of other RF bands The generation of spurious signals from a transmitter could be the result of imposed varying antenna loads, noisy voltage-supply lines to the stages of the transmitter, or noncontinuous battery-voltage supply to RF energy from the host.

传输器的不稳定是指传输器产生的伪真信号，这种不稳定性的伪真信号的形成出现，如果它们的振幅超过代理服务器允许值就会进入其它波段的接收系统，干扰使用者，强制性的天线改装，伴有嗓音的电压，断续的供电都会产生为伪真信号，有些电池装配线可接收并解调这种能量，并生成嗓音，然后由经供电线路进入主传输器。

In addition, the propagation of sexual contain other genes are also two types of fungus emerged, which show that Nosema may be a genetic control of reproductive cycle, and may be infected when the host started sexual reproduction.

另外，有性繁殖所包含的其他基因也在这两类真菌中出现，这表明，微孢子虫可能有一个遗传控制生殖周期，并且可能在感染宿主时开始进行有性繁殖。

Because of the high optical functions as fluorides and the ease in fabrications and high chemical stability as oxide glasses, oxyfluoride glass ceramics, as an special kinds of materials different from crystals and glasses, became a promising host materials for rare earth ions.

玻璃陶瓷作为一种不同于玻璃和晶体的特殊形态的上转换材料，由于兼具氟化物材料的好的光学性质和氧化物材料的稳定性及易于制作，可加工成各种形态的优点而可能成为一种有优良的上转换发光材料。

For example, it is a pathogenic bacterium and has endotoxins; it secretes protein into the periplasm and often into inclusion bodies. Bacillus subtilis is an attractive host for the production of heterologous secretory proteins. Many genes has succeed expressed in Bacillus subtilis, and the plasmid vectors for Bacillus subtilis are now taken from other genus bacterium, such as Staphylococcus aureus or lactococcus lactis and so on. As it is clear to known that these plasmids are far from optimal for Bacillus subtilis, because of low efficiencies of cloning and high levels of replicating instability.

枯草芽胞杆菌是目前原核表达系统中分泌表达外源蛋白较理想的宿主，近几年已在枯草芽胞杆菌中成功表达了多种基因，但大多都应用来源于金黄色葡萄球菌、乳酸杆菌等的载体来表达外源基因，由于其在枯草芽胞杆菌中存在分离复制的不稳定及外源基因的克隆表达效率低的现象，故都不是枯草芽胞杆菌的最佳选择，还有待改进。

Interspecific hybridization offers a special opportunity to understand the genetic basis of host plant specialization in phytophagous insects and the biological causes of Haldane's rule.

种间杂交是研究植食性昆虫食性专化的遗传机制和霍尔丹定律生物学基础的主要途径。

We find a close conceptual connection between our theory that the diversification of phytophagous insects has been driven by oscillations in host range, and our personal interpretation of the most efficient way in which West-Eberhard's theory could account for plasticity-driven speciation.

作者找到一个作者的理论(植食性昆虫多样化是由寄主范围波动驱使)与作者对West-Eberhard的理论所作最有效率的解释，两者之间紧密的概念连结。

Liriomyza trifolii is a highly polyphagous and cosmopolitan pest. According to the investigation, the host range of L. trifolii has extensive embraced more than 400 species in 25 families. Females of L.

非洲菊斑潜蝇是一种高度多食性且为世界性分布的重要农业害虫，根据统计，其寄主植物囊括了 25 科，共超过 400 种以上的记录，是潜蝇科中非常少数特殊的多食性种类。

In this paper, twenty novel meso-substituted porphyrins of four series were designed and synthesized by increasing the conjugation of porphyrins or introducing substituents with high fluorescence quantum yield into the meso-position of porphine, and then red OLEDs were fabricated by doping porphyrins into a suitable host using ten porphyrins compounds and their electrolumin -escence properties were tested. The main contents and results were generalized as follows:Three meso-tetrakisporphyrins 4a-c and three conjugations of porphine-triarylamine linked by styrene 10a-c were synthesized and characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.

本文通过增大卟啉分子的共轭结构或将具有高荧光量子产率的基团连接到卟吩环的中位得到了四类共20个新型的卟啉化合物，并选取其中10个化合物制备有机发光器件来考察材料的电致发光性能，具体内容包括以下几个部分：设计合成了3个中位直接被三芳胺取代的卟啉化合物4a-c和3个通过苯乙烯连接的卟吩-三芳胺共轭体10a-c，通过核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了新化合物的结构。

Stimulus of 15°C, while newly hatched larvae were. The results indicate that the mental course of S. ratti larvae external to the host is determined at a relatively early stage before the first molt.

而且通常在15℃是属於比较没有刺激性且可以激化孵化能力的低温度，此实验主要是利用在不同温度下，对於一开始幼虫孵化的较早阶段，是否造成后来的感染力有所不同。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了