因子

It has been found that ectogenic GDNF has nervous protective effec,but ectogenic GDNF cannot enter blood brain barrier.

传统观点认为，星形胶质细胞是神经系统的支持细胞，构成神经组织的网架而起支持作用，与神经元的解剖位置关系紧密，参与中枢神经系统的免疫反应，参与构成血脑屏障，目前研究发现，脑缺血时星形胶质细胞异常活跃，通过合成多种蛋白质、细胞因子和神经营养因子等对神经元起保护作用，对缺血性脑损伤的发展和转归具有重要意义。

ABSTRACT Hairy and Enhancer-of-split-type protein 1 (Hes1) is a main effecter of the Notch pathway and acts as a differentiation repressor and/or as a pro-expansion factor during the pancreatic development.

由于人们尚未找到胰腺干细胞的特异性标志，因而给胰腺干细胞的分离纯化及其特性的研究带来了极大的困难。来自hes1-/-敲除小鼠的研究提示，Hes1作为Notch信号通路的一个关键分子，在胰腺发育过程中扮演着扩增促进因子或分化抑制因子的角色，因而有可能用作胰腺干细胞的备选标志分子，但这一推论缺乏直接的证据。

Bone morphogenetic proteins , a group of polypeptides within the transforming growth factor superfamily, were originally identified by their ability to induce endochondral bone formation in ectopic extraskeletal sites in vivo. BMPs family contains at least 20 members.

骨形态发生蛋白作为骨的生长因子属于转化生长因子-β超家族的一个成员，它的一个重要功能就是在非骨组织如肌肉中诱导新的软骨和骨形成。

Part I Clinical study on serum leptin and IGF-1 levels in patientswith polycystic ovary syndromeObjective To determine whether PCOS is related to leptin, IGF-1 and IGFBP-1 dysregulation and to investigate the relationship between endocritic and metabolic disorders.

国内关于瘦素、胰岛素样生长因子-Ⅰ对生殖功能影响的研究极少，对于二甲双胍治疗PCOS后，瘦素及其它相关因子的研究未见报道。

Many factors, such as vascular endothelia growth factor and fibroblast growth factor, can stimulate the formation of new vessels.

血管内皮生长因子、成纤维细胞生长因子等许多因素均可刺激新生血管的形成。

Objective To further inquire into the effect mechanism of the cytokine tumor necrosis fact or α induced by enterogenous endotoxemia on the genesis and development of hepatic fibrosis.

目的 探讨肠源性内毒素血症所诱发的细胞因子肿瘤坏死因子-α在肝纤维化发生发展中的作用机制。

MATERIALS: Six adult New Zealand clean rabbits of either gender were included in the present study.METHODS: Tendon sheath fibroblasts, epitenon tenocytes, and endotenon tenocytes were isolated from rabbit flexor tendon and cultured.

目的：探讨兔屈趾肌腱腱鞘、腱外膜和腱内膜细胞增殖、胶原产生和乳酸对细胞的增殖、胶原产生和对转化生长因子β1，基础纤维母细胞生长因子，白细胞介素8分泌的影响。

Its sensitivity has a great influence on the global climate system. The large-scale rough estimate with the remote sensing data will contribute to the global carbon storage, carbon cycle and the global balance changes. In this study, the NDVI data of the NOAA/AVHRR acquired on 1995 and 2000 were used besides the relevant ground weather data and the eradiate data.

本文计算了1995和2000年的我国陆地NPP，并在此基础上分析探讨了NPP的时间变化以及空间分布特征，并对森林、草原和农作物NPP的数量和时间变化特征进行了统计分析，对引起这种变化的主控因子进行了初步探讨，以增进对我国陆地生态系统NPP的时空格局变化及其控制因子的了解。

Many pathogens of animal and plant, such as Erwinia cawtovora pv.carotovora and Pseudomonas aeruginosa, producing some kinds of virulence factors before attacking the host, and most of those virulence factors was modulated by the quorum-sensing system which relys on the secret of some small quorum sensing signals.

很多动植物的病原细菌，包括胡萝卜软腐欧文氏菌和铜绿假单胞菌等在侵染动植物有机体的过程中，首先利用细菌的群体感应机制诱导致病因子的表达，在致病因子的作用下侵染宿主。

The advantageous one mainly included different measures of vegetation restoration such as fencing, rehabilitated fields, abandoned land etc. and polices or laws about desertification debating. The disadvantageous influences included illegal grazing, estrepement, firewood cutting and so on.

有利因子如退耕还草、人工封育、撂荒等草地植被恢复及荒漠化防治措施以及相关的荒漠化防治政策法规的实施，不利因子如偷牧、滥垦、滥樵等。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。