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However, the roles of estrogen receptorsα andβ in EPC biology are largely unknown.

然而，EPC上的雌激素受体α、β的作用目前尚不清楚。

The aim of this paper is to examine the social roles of the news sites in the epidemic.

这篇论文的目的，是研究在疫症肆虐期间，新闻网站扮演的社会角色。

Based on literatures and our laboratory diagnosis for many samples from different chicken flocks with different symptoms and lesions from different areas nationwidely during the last 4 years,this article analyzed the roles of multiple immunosuppressive viral infections in pathogenesis and epizootiology in chicks flocks.

根据近几年各地大型鸡场不同类型病鸡的实验室鉴别诊断结果，结合国内外的研究进展，本文对不同免疫抑制性病毒多重感染在鸡群疫病发生和流行中的作用做了全面的分析和探索。

During the two critical periods—gametogenesis and preimplantation development, there are genome-wide epigenetic reprogramming in gametes and embryos, which plays important roles in the erasion or creation of imprinting, gene silencing and tissue-specific gene expression.

其中关键时期是配子形成期和胚胎植入前期，最主要内容是全基因组DNA"CpG岛"甲基化和染色质组蛋白乙酰化的有规律变化，结果是配子遗传印记的消除与重建、植入前胚胎大范围基因的静默和组织特异性基因表达的确定。

Based philosophically on the role theory of sociology, especially the Symbolic Interaction Theory, namely Role Play by Miller, Impression Management and Drama-imitating Theory by Erving Goffman, as well as the author's long-time teaching expriences and observation through the method of cross-disciplinary research on the previous foreign and domestic research results, the thesis demonstrates and analyzes pedagogically, psychologically and administratively the main roles of teachers' in teaching and the regulation of their behaviors.

这一论文在哲学意义上一方面基于作者长期的教学经验和通过对之前国内外研究结果的跨学科研究，另一方面基于社会学的角色理论，亦即Miller的角色扮演理论，Erving Goffman的印象整理和印象模仿理论，其在教育学、心理学及管理学意义上论证和分析了教师在教导和规范他们行为方面的主要作用。1。几个社会学的名词不敢肯定，有了解这几个专有术语通常译法的达人吗？请帮忙哦。

Based philosophically on the role theory of sociology, especially the Symbolic Interaction Theory, namely Role Play by Miller, Impression Management and Drama-imitating Theory by Erving Goffman, as well as the author's long-time teaching expriences and observation through the method of cross-disciplinary research on the previous foreign and domestic research results, the thesis demonstrates and analyzes pedagogically, psychologically and administratively the main roles of teachers' in teaching and the regulation of their behaviors

从哲学的角度来说，它是以社会学角色理论为基础的，尤其是以象征性相互作用理论为基础，即以米勒角色扮演理论，印象管理法和Erving Goffman戏剧模拟式理论以及作者长期以来的教学经验为基础，同样还有以作者通过对以前国内外的研究成果所做的交叉学科性研究而获得的研究评论为基础，该论文从教育法上，心理学上以及管理学上对教师在教学和行为规范上的主要作用作出了明确的阐述和分析

Based philosophically on the role theory of sociology,especially the Symbolica Interaction Theory,namely Role Play by Miller,Impression Management and Drama-imitating Theory by Erving Goffman,as well as the author's long-time teaching experinces and observation through the method of cross-disciplinary research on the previous foreign and domestic research results,the thesis demostrates and analyzes pedagogically,psychologically and administratively the main roles of teachers' in teaching and the regulation of their behaviors.

本次调查通过对流浪儿童的流浪原因，流浪区域，生存状态，成长需求的调查，了解流浪儿童的心智，行为以及长期漂泊形成的复杂的社会关系对其影响等情况，在研究中提出切合实际和可操作性的对策和建议，为政府智能部门指定行之有效的对政策措施提供可靠的依据，推动政府加大救助工作的粒度，为流浪儿童提供法律援助，经济援助，寻找亲人援助，提供受教育援助，不再受到歧视和各种侵害，虐待等，促使其健康成长。

Erythrocyte plays very important roles in metabolism and substance transportation for human body.

红细胞在人体新陈代谢和物质运输方面起着非常重要的作用。

Recently, roles for Notch signaling in lymphopoiesis and myelopoiesis have been evaluated, but in erythropoiesis are not clear.

关於Notch在lymphopoiesis 和myelopoiesis中的功能，近年来也有初步的研究，但目前对於红血球生成方面的功能则不是很清楚。

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。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。