原细胞

Both chrysotile and crocidolite at given dose could stimulate type Ⅰ and type Ⅲ collagen gene expression by 2ES cell, suggesting that asbestos fibre itself may also contribute to collagen gene expression in asbestotic lung 〓.

一定剂量的温石棉和青石棉都可以刺激2BS细胞Ⅰ、Ⅲ型胶原基因的表达，表明石棉纤维本身也是引起石棉肺病变中胶原基因表达增加的重要原因。

But when passing the age of 20~25, the productive rate of making collagen by main cells in derma will decrease. Consequently, the skin will turn loose and wrinkles will show out when the collagen produced is less than it lost.

但自20～25岁后，真皮层中制造胶原蛋白的纤维母细胞制造能力会逐渐降低，当胶原蛋白的制造赶不上流失的速度时，肌肤就开始出现松垮或皱纹现象。

The collagen is main component in dermis, it is about 70% net weight of dermis .

成人皮肤中的胶原纤维主要是Ⅰ型和Ⅲ型胶原蛋白组成，这些均由成纤维细胞分泌。

METHODS: Human umbilical cords were processes within 6 hours with explantation technique, collagenase digestion and enzymes combination digestion after harvested, and followed by counted colony numbers. A colony contains more than 50 cells.

脐带采集后在6 h内分别用植块法、胶原酶消化法、胶原酶与胰酶联合消化法进行分离培养，于培养第14天计数集落数，超过50个细胞计为集落。

Gracilis were applied to investigate the effect of proplastid on adaptability, in which such structure was found to be important to the competitiveness during heterotrophic growth in the dark; 2 a new procedure for differential display technology was developed and used to study the influence of plastid on nuclear gene expression, with which it was shown that the loss of plastid could cause remarkable changes in expression of certain nuclear genes.

本文主要有两点突出之处：1）应用裸藻褪色突变株与野生型的生长竞争实验探讨了原质体对于裸藻的适应意义，发现在黑暗环境和异养生长条件下原质体对于细胞的生存竞争有重要作用；2）改进了一种差异显示技术并利用该技术来研究质体的有无对基因表达的影响，证明质体丢失可导致某些核基因表达的显著变化。

The gene expression of chimeric virus could be detected in 293T cells transfected by SHIV proviral DNA.

用此 SHIV 原病毒 DNA 转染 293T 细胞，细胞中能够检测到嵌合病毒基因的转录与翻译；在细胞培养液上清中亦可检测到装配出的病毒颗粒。

Methods Th multi-epitope peptide was made up of 5 Th epitopes(heat shock protein 65 of Mycobacterium tuberculosis p1-20,E2 protein of Rubella virus p54-65,engineering epitope PADRE,heat shock protein 60 of Chlamydia trachomatis p35-48,and tetanus toxin p830-843),and its gene sequence including of 219bp.

方法复合T辅助细胞表位由5个T辅助细胞表位组成(结核杆菌热休克蛋白65p120、风疹蛋白E2-4p5465、人工合成T辅助细胞表位PADRE、沙眼衣原体热休克蛋白60p3548、破伤风类毒素p830843)，其基因序列由219个核苷酸组成。

A multi-epitope antigen gene pcx was assembled by five highly conserved B-and/or T-cell epitopes, which were selected from C (1-16aa, 132-141aa), E1 (126-135aa), NS3 (139-147aa) and NS5B (768-775aa) protein, as well as a T-cell epitope of tetanus toxin, which was added to enhance T-cell immunity.

针对HCV的高度变异性及免疫特点，在HCV基因产物中优选了5个具有良好免疫原性的高度保守B／T细胞表位，组合成一个多表位抗原基因pcx，这些表位分别来自核心蛋白(1～16aa，132～141aa)，E1(126～135aa)，NS3(139～147aa)及NS5B(768～775aa)，以及破伤风毒素的T细胞表位用以增强T细胞免疫。

Objective To investigate the effects of IL-1β on the proliferation and the changes in the cell cycle of primary cultured astrocytes.

目的 研究IL-1β对体外原代培养的星形胶质细胞中的激活及增殖作用，并探讨IL-1β对星形胶质细胞细胞周期的影响。

To study the different reactivities of PDL cells to EMP5 we established the PDL cells culture model by tissue explant in vitro.

PDL细胞的原代培养及鉴定为研究EMPs对人PDL细胞的作用，采用组织块法成功地建立了人PDL细胞的模型。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。