查询词典 defense mechanism

Compared with classical cytotoxic T lymphocytes , NK cells are superior in the following aspects: NK cells are among the first cell types to be activated after intracellular pathogen stimuli, the activity of NK cells peaked between 1 to 3 days, retained during the first 7-10 days, and the T cells response emerged only after 7 days when the NK cell responses begin to decline; though comprising of only 10％-15％ of peripheral lymphocytes, NK cells mobilize most of the cell populations in a strong and high level response to different invasions, and act as key factors at early defense before a specific immune response could mount, while only certain clones were involved in T cell response; NK cells kill virus-infected or malignant transformed cells without pre-sensitization and without restriction by major histocompatibility antigen, which is usually a mechanism of immune escape to T cell recognition by virus-infected or tumor cells, thus NK cell in complementary with T cells play crucial roles in tumor and virus eradication.

NK细胞以其强大的细胞毒活性为特征，与细胞毒性T细胞相比，NK细胞具有如下特点：NK细胞虽然只占外周血淋巴细胞的10-15％，但是对刺激性因素产生应答的过程十分迅速，一次可以调动大多数细胞共同参与，而不是几个克隆的活化，免疫应答的强度高；病毒感染或恶性转化细胞的一个主要特征是细胞表达的MHCⅠ类分子下降或消失，并借助这一机制逃避特异性T细胞应答的识别，NK细胞介导的杀伤活性无需抗原刺激，不受MHCⅠ分子表达的限制，从而与T细胞应答互为补充发挥免疫防御的功能；NK细胞的免疫活性可以被多种细胞因子上调，其中IFNα，IL-2，IL-12，IL-15和IL-18具备更强的作用；NK细胞具有强大的细胞因子分泌功能，对于启动T细胞特异性应答必不可少。

Fast development of molecular biology made it possible that utilizing the plant denfense system improved plant resistance to fungous disease after the plant defense system was studied and its mechanism was uncovered.

分子生物学的快速发展，使得通过研究植物机体内在防御系统并有目的地利用其机体防御机制来提高植物对真菌病害的抗性成为可能。

In this paper, the ability and mechanism of antibacterial and immune defense ofChinese shrimp was studied using cytological, biochemical, molecular biological andproteomic methods. A sensitive and stable antibacterial and lysozyme assay methodswere selected. The effect of Vibrio anguillarum and laminarin (a kind of beta-1,3-glucan) on the immune ability of haemolymph of Chinese shrimp was analyzed.The changes of total haemocyte counts, antibacterial ability, lysozyme activity andlysosome membrane stability were detected.

本文采用细胞学，生物化学，分子生物学和蛋白质组学等技术，对对虾的抗菌能力和免疫防御机制进行研究，筛选了灵敏稳定的抑菌和溶菌检测方法；并对灭活鳗弧菌和海带多糖(laminarin，一种B-1， 3 葡聚糖)免疫诱导后的中国明对虾血细胞数目，血淋巴的抑菌活力，溶菌能力，溶酶体膜的稳定性进行分析；对两种重要免疫因子溶菌酶和精氨酸激酶进行克隆和表达分析。

This research used the brand-new way to carry on the fusion to the multiple source information, have certain effect on network forewarned. Finally, a new model for treat assessment based on fuzzy matrix game theory are presented in this paper. By analyzing the fuzzy matrix game theory and threat assessment mechanism,and combine the fuzzy concept and gambling model, and will obtain the successful application in the network security active defense system.

该研究采用了全新的途径对多源信息进行融合，对网络预警起到一定作用；最后，提出基于模糊矩阵博弈的网络安全威胁评估，在分析博弈论中矩阵博弈原理和网络空间威胁评估机理的基础上，将模糊概念引入博弈模型，并在网络安全积极防御系统中获得成功应用。

One of the most exciting aspects is the mechanism of its immune defense as a multivalent pattern recognition receptor.

最新研究表明，卵黄蛋白原还参与动物的免疫防御过程，是一种典型的模式识别分子。

Due to the Anpo mechanism, there emerges a contradiction between the Article 9 of its constitution and the new security treaty, giving rise to an internal dispute on the unconstitutionality and the concern over the validity of the Self Defense Forces and causing an argument over the priority of the constitution and the Anpo Treaty.

第二次世界大战后，日本接受战败事实，由盟军进行占领，先后完成日本国宪法、签订旧金山和平条约及日美安全保障条约，并在盟军退出、恢复主权之后，即构成维护日本的主要安全保障体制，使日本在无后顾之忧的有利条件下，维持了六十余年的和平，全力发展经济，成为经济大国。

Due to the Anpo mechanism, there emerges a contradiction between the Article 9 of its constitution and the new security treaty, giving rise to an internal dispute on the unconstitutionality and the concern over the validity of the Self Defense Forces and causing an argument over the priority of the constitution and the Anpo Treaty. Although Japan is planning to resort to constitutional amendments to solve the problem, due to lack of internal consensus, it remains a long way to go before the controversy could be finally removed.What needs Taiwan's close attention is that how to respond if Japan successfully solves the contradiction of the Article 9, improves its military buildup and change its measures towards the territorial and sovereignty dispute.

但随著国际情势发展，日本极欲走出经济大国、政治小国的窘境，却因为在安保体制下，日本宪法第九条与日美安保条约规范内容形成法与政治对立，引发违宪争议及自卫队合法性等问题，致使国内存在宪法与条约何者为优位争论；其后更影响日本自卫队参与联合国维和行动之规模与形式，无法获得国际社会及日本民众的多数认同，尤其是日本民众普遍赞成自卫队参与国际救灾及人道救援等行动，但对於其他更积极的维和行动则倾向於维持现行规模，不宜更积极参与，以免触及修宪及卷入战争等严肃议题。

To further investigate mechanism of BnMPK4 in Resistance to Sclerotinia Sclerotiorum, analysis of expression changes of defense-marker genes were carried out by quantitative RT-PCR.

为了研究BnMPK4转基因植株的抗菌核病机理，采用定量RT-PCR调查转基因植株中植物防卫标记基因的表达变化。

The simulation model of air defense fire oppugning effect was based on simulation design theory, simulation control mechanism, model internal structure and model algorithm.

从仿真设计原理、仿真控制机制、模型内部结构和模型算法三方面研究防空火力抗击效果的仿真模型。

The simulation model of air defense fire oppugning effect was based on simulation design theory, simulation control mechanism, model internal structure and model algorithm.

作者单位：（防空兵指挥学院研究生15队，河南郑州 450052）摘要：从仿真设计原理、仿真控制机制、模型内部结构和模型算法三方面研究防空火力抗击效果的仿真模型。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。