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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。

Assignment of SRY as the testis-determining factor in eutherian mammals is supported by molecular analysis of cytogenetic sex reversal (i.e., XX males and XY females) and by complementary studies of transgenic murine models.

Sry转基因小鼠的产生和对包括XX男性及XY女性等多种性分化及发育异常患者的研究，都支持SRY基因是TDF基因及其在性别决定中的开关控制作用。

Month baby were exanthema rash when you can add a complementary and should eat what?

11个月的宝宝得小宝宝急疹时、还能添加辅食吗、应该吃些什么？

It comprises one CMOS complementary amplifier with negative resistance feedback,two resistive-load amplifiers and two CMOS inverters.

它包含一组具有负反馈电阻的CMOS互补放大器、两组电阻负载放大器和两组CMOS反相器。

In terms of complementary therapies, some people may find that relaxation techniques and herbal medicine such as feverfew (1) may help prevent migraine attacks.

在条款的辅助疗法，有些人可能会发现，放宽技术和中草药等菲沃菲（ 1 ）可能有助于防止偏头痛的袭击。

Wheat gliadins composition can be regarded as finger-print for varietal identification. The method of isolation and identification for wheat gliadin are SPAGE, RP-HPLC and CE techniques, three of them are complementary, CE is the most powerful tool.

小麦醇溶蛋白组成可以作为小麦品种鉴定的指纹图谱，其分离方法有酸性电泳、反相高压液相色谱和毛细管电泳等手段，3种方法相互补充，而CE分辨率最高。

It can greatly promote carcinogenesis. DNA diluted alkali firer proves N-nitroso compounds induce the crosslinking between complementary DNA base pairs and initiate cell cancerization.

DNA城稀释过滤法证明，N-亚硝基化合物含氮杂环化借诱发DNA互补碱对之间的交联而启动细胞的癌变。

FOD is a form of development that concentrates manufacturing and distribution businesses at a location where they benefit from efficient access to multiple modes of freight transportation, the presence of complementary businesses, and an available industrial workforce.

FOD的发展方法是将生产和配发业务集中于具备便捷的货运条件、补充性商务和工业生产力的地点。

This article also points out that"existence of squares","Out-In Complementary Principle","the principle of limit","Liu-Zu cross -section princeple","the area formula for rectangle and the volume formula for cuboid" determine the nature and lay the foundation of geometry in ancient China.

提出了我国古代论证几何所依据的原始命题，指出"存在正方形"连同"出入相补原理"、"极限原理"、"刘－祖截面原理"以及长方形面积公式和长方体体积公式确定了我国古代几何的性质，奠定了我国古代几何的基础。

The Four P's and the Four Utilities present slightly different but complementary ways of looking at the exchange between you and your customers.

四个P的和四个事业目前略有不同，但相辅相成的方式来交流你和顾客。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"