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The identification and study of the control factors that regulate gene expression at different stages are of great value to elucidate the mechanism of spermatogenesis and spermiogenesis. Such study can also provide foundation and cues to investigating the mechanism of infertility and immunological contraception.

作为体内高度分化的雄性生殖细胞，精子发生过程中经历了从形态到生化的复杂变化，在这一过程中有一系列的特定基因按严格的时空顺序转录和翻译，因此寻找和研究不同发育阶段的差异表达的基因，将有助于最终阐明精子发生的机理，并为控制生育和不育机理的探索提供新的线索。

Methods Acc o rding to the requirement for the network system which is of the high speed, the high reliability, high performance and flexibility, we elucidate the network sys tematic design standard and key factor, and follow from the topology frame of ho spital network, put forward the method of establishing network.

方法通过对网络系统的高速率、高可靠性、高性能和灵活性的要求，阐述了网络系统的设计的标准和关键因素，根据医院网络拓扑结构，提出了组建网络的方法。

Objective to elucidate ultrasonography characterizing and value in the diagnosis and follow-up for patients with subacute thyroditis.

目的 探讨超声检查亚急性甲状腺炎的声像图特征及对该病诊断和指导治疗的临床意义。

In this report, immunohistochemistry and in situ hybridization techniques were perfected to examine the expression of bFGF, fibroblast growth factor receptor-I and bFGFmRNA of cultured HEP-2 laryngo-tumor cell and 803 gastro-tumor cell and of the solid tumor tissue formed by implanting the cultured cells into subcutis of nude mice, intending to elucidate the correlation between the expression level and the tumor formation.

本研究建立了免疫组化和原位杂交的检测方法，通过对体外培养的HEP-2喉癌细胞和803胃癌细胞和这两株细胞在裸鼠皮下形成的实体瘤组织中bFGF，纤维细胞生长因子受体-1（fibroblast growth factor receptor-1，FGFR-1）和bFGFmRNA的检测试图揭示三者在体外和体内表达以及与肿瘤形成的关系，从而为这方面的研究提供更多的材料。

Objective To investigate the expression of tumor suppressor PTEN mRNA in glioma aswell as to elucidate its clinical significance.

目的 探讨抑癌基因PTEN在脑胶质瘤的表达情况及其临床意义。

The results contribute to further functional analysis of these SUT genes, and help elucidate the molecular mechanisms of sucrose transportation and its regulation in rubber tree.

本文为进一步研究橡胶树SUT基因的功能奠定了基础，并将有助于巴西橡胶树中不同库组织，尤其是乳管的蔗糖供给与调控分子机理的阐明。

Abstract］objective: effects of a single period of mechanical strain on gene expression patterns of two osteogenic transcription factors, ets1 and cbfa1, in rat calvarial sutural osteoblast-like cells were studied in this study to elucidate the molecular mechanism of suture distraction.

摘要］ 目的：探讨大鼠颅骨缝成骨细胞在张应力作用下ets1和cbfa1基因表达的变化，以揭示骨缝牵张成骨的分子机制。

Objective: Effects of a single period of mechanical strain on gene expression patterns of two osteogenic transcription factors, Ets1 and Cbfa1, in rat calvarial sutural osteoblast-like cells were studied in this study to elucidate the molecular mechanism of suture distraction.

结果：Ets1和Cbfa1的mRNA水平分别在机械张应力作用后6 h及12 h内显著增高，随后，mRNA水平逐渐恢复到对照组水平，Ets1先于Cbfa1表达，在加力后表达立即升高，并在0.5h达到最高水平，而Cbfa1则首先经历一个短暂的潜伏期，后表达逐渐升高，在6 h达到最高水平，Cbfa1的最高表达水平约为Ets1的2.58倍。

In order to further investigate the pathologic role of HOXD13 p.Q317R mutation during embryonic development and elucidate the molecular mechanism of typeⅤsyndactyly,we constructed mouse Hoxd13 Q50R replacement gene targeting vector,which will contribute to future generation of mouse model carrying the corresponding mutation.

为进一步研究HOXD13 p.Q317R突变体的功能及其导致V型并指的致病机制，我们成功构建了针对此点突变的小鼠Hoxd13 Q50R置换型基因打靶载体，为建立此点突变的小鼠模型奠定了基础。

To elucidate whether overexpression of Nolz-1 may negatively regulate cell proliferation and cell survival during neurogenesis, we performed immunohistochemistry analysis in the developing telencephalon with specific markers of cycling cells and apoptotic cells.

为了阐明过度表现 Nolz-1在神经发生过程中，是否会负向调控细胞增生及细胞生存，我们利用周期细胞和凋亡细胞专一性抗体，在发育端脑中进免疫组织染色分析。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。