查询词典 stem

As controersial as embryonic stem cell research can be, cloning embryos to produce those stem cells is een thornier. Much of the world became familiar with cloning in 1997, when scientists announced they'd cloned a sheep named Dolly.

和颇有争议的胚胎干细胞研究一样，利用克隆胚胎来生产干细胞是更为棘手的。1997年，科学家们宣布他们克隆了一只取名叫&多利&的绵羊，人们对&克隆&开始熟悉起来。

This investigation was to establish a simplified culture system to isolate and passage brain tumor stem cells from human medulloblastoma, observe their proliferation and differentiation, and determine the expression of normal neural stem cell antigens, CD133 and Nestin, in BTSCs. METHODS: Eleven specimens of medulloblastoma were acutely dissociated and triturated into single cells without trypsin digestion.

本研究旨在利用简化的无血清培养基和悬浮培养方法，从人髓母细胞瘤中分离培养脑肿瘤干细胞，观察其在体外的增殖、分化，鉴定其特异性标志物CD133和Nestin的表达，验证肿瘤组织切片中CD133阳性细胞的存在，为脑肿瘤干细胞的进一步研究打下基础。

The stem factor used to convert thrust to torque is a function of the acme thread characteristics of the valve stem and drive nut.

用来将推力转换成扭矩的阀杆系数是阀杆和驱动螺母上的梯形螺纹的函数。

The result showed that the ethylene content in upper organ of ramie plant is higher than in lower organ. The ethylene content in leaf and stem apex is higher than flower bud. The ethylene content in ramie plant with female flower is higher than ramie plant with androgynary in stem apex, leaf and flower.

结果表明：乙烯在苎麻体内分布总趋势是自上而下依次减少，上中部器官乙烯含量大于下部器官，其中茎尖和叶片乙烯含量大于花芽，性别表现为雌性的苎麻在茎尖、叶和花芽中的乙烯含量都大于性别表现为两性的苎麻。

9 cases of cholesteatoma manifested by MRI and CT, among them, 8 cases located ventral side of brain stem, 1 case in left side of brain stem.

方法经磁共振成像和计算机体层摄影及手术证实的胆脂瘤9例，位于脑干腹侧面8例，脑干左侧1例。

Conventional CT images of the three additional integrated technologies, for lunwen114the diagnosis of 103 cases of cerebral infarction, accounting for 89.65%(103/116), of which 27 cases of basal ganglia are treated by the discovery of three small lesions, brain stem cavity 84 Cases, accounting for 81.55 percent of the brain stem (84/103), in line with the positive diagnosis rate was significantly higher than plain check.

常规平扫图像加三种综合技术，诊断脑梗塞为103例，占到89.65%（103/116），其中27例均为基底节区经三种处理后发现的微小病灶，脑腔梗为 84例，占脑梗的81.55%（84/103），诊断阳性符合率明显高于平扫检查。

Objective To know if MCF-7 breast cancer cell line has breast cancer stem cell,and change of stem cell pool in diverse incubation circumstance.

以及在不同的培养条件下，干细胞池的变化情况。

The effects of bur cucumber as rootstock on the mass of the first fruit, the number of female flowers on the main stem in 20 nodes, plant height, area of the biggest leaf, number of leaves, stem diameter, number of nodes were in the middle of the effects of black seed pumpkin as rootstock and self-rooted cucumber.

结果表明，棘瓜嫁接可使'中农21号'黄瓜的第1雌花开放期和始收期提前，对根瓜质量、20节内的雌花数、株高、最大叶面积、叶片数、茎粗和节数的影响小于'黑籽南瓜'嫁接处理；前者的抗寒能力、净光合速率强于后者和自根苗；棘瓜嫁接对黄瓜具有增产、抗枯萎病、抗根结线虫的作用，并且果实品质显著优于以黑籽南瓜嫁接的。

The overall aim of the neural stem cell lab is to understand, at a molecular and cellular level, how endogenous mammalian neural stem cells are generated during development, and how their actions are regulated in the adult CNS, both under normal conditions and following disease or degeneration.

该神经干细胞实验室的总体目标是针对正常条件下和疾病或退化情况下，在分子和细胞水平阐述内源性哺乳动物神经干细胞在发育过程中的产生，以及这些神经干细胞在成人中枢神经系统中活动的调控。

This made Notch ligand Delta a potential ideal candidates for the self-renewal and expansion of stem cells. The tentative plan was firstly applied in hematopoietic stem cells, and obtained encouraging results.

最近有人提出利用Notch信号的这种&分化抑制作用&，对干细胞的增殖和分化进行调控的设想，并在造血干细胞研究方面取得了一些令人鼓舞的结果。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷