查询词典 stem

BACKGROUND: Embryonic stem cell is a kind of highly undifferentiated totipotent cell. It can proliferate and maintain its totipotency in the system cultured in vitro. It is one of most promising stem cells in thetreatment of central nerve injury.

背景：胚胎干细胞是一种高度未分化的全能细胞，在体外培养系统中可扩增并可维持其全能性，是治疗中枢神经损伤最具有前途的干细胞之一。

So, if a mouse is born from a stem cell injected into a tetraploid blastocyst, that stem cell must have been totipotent.

所以如果一只老鼠诞生自注射过干细胞的四倍体晶泡，那么干细胞就是全能的。

AIM To study the isolation and in vitro culture of rabbit s bone mesenchymal stem cells and adipose stromal stem cells and the use of both BMSCs and ASSCs cells in nuclear transfer to produce totipotent blastocysts.

目的 研究非休眠期成年兔骨髓基质干细胞和脂肪基质干细胞作为供体，以体外成熟去核兔卵母细胞作为受体进行核移植构建重组胚胎的可行性及囊胚形成率。

Results The segmental bronchial ramifications of the left upper lobe were classified into three types mainly: common stem of apical and posterior segmental bronchi (64%, 130/200), trifurcation (23%,45/200), common stem of apical and anterior segmental bronchi (10%, 21/200), and they could be identified in two typical slices of transverse thin-section CT.

左肺上叶3种主要分支类型可以通过薄层CT横断面图像2个典型层面辨认；左肺下叶依据基底干支气管分支的不同分为2种主要类型，Ⅰ型163例(75%)：基底干支气管两分支，即内前底段支气管、外后底段支气管；Ⅱ型39例(18%)：基底干支气管3分支，即内前底段、外侧底段、后底段支气管。

An umbel is a type of inflorescened in which the stem axis is not elongated and individually stalked flowers appear to arise from same point on the stem.

伞形花序是一类花轴不伸长，小花柄着生在茎的同一个部位的花序。

But in 2007, scientists made a revolutionary breakthrough. Three different groups simultaneously announced that they had converted unipotent, mature skin cells back into an undifferentiated state. In other words, they had created cells that behaved like embryonic stem cells without using any embryo derived materials. These new cells, dubbed "induced pluripotent stem cells" or IPS's could then be converted into a variety of different cell types, such as pancreas, muscle or brain cells. The IPS's were created by inserting certain genes into the DNA of the adult cells.

不过，在2007年，科学家已经取得了重大突破，三个不同组织同时发表声明称：已经能将成熟皮细胞转化回心肌细胞，也就是说不通过胚胎组织就能让细胞具有胚胎干细胞的属性，能够让多种不同类型的细胞细胞如胰腺细胞，肌肉细胞或脑细胞重新转化为人造胚胎干细胞，将某种组织注入成体细胞DNA中便能产生IPS'S。

To explore the possibility that the androgen may facilitate differentiation of hair follicle stem cells into sebocytes, we carried out experiments to test this hypothesis. The concrete steps to carry out this research were as follow: Firstly, observed the expression of AR and examined the expression of AR mRNA of rat vibrissa follicle stem cells in vivo in three defined phases of a hair follicle cycle, including anagen, catagen and telogen. Secondly, cultured HFSC deprived from vibrissa follicle bulge region in culture flasks and observed the expression of AR, ketertin 15 (K15), cluster of differentiation 34 (CD34) andβ1-integrin of those cells.

为了探索雄激素对毛囊干细胞定向分化为皮脂腺细胞的过程是否具有促进功能，我们进行了如下的实验来进行研究：第一步，检测了在毛囊周期的三个不同时期(生长期、退化期和静止期)中大鼠触须毛囊干细胞中AR、ARmRNA的表达以及检测原代培养的毛囊干细胞中AR的表达并探讨意义，为进一步研究打下基础。

Objective To study the method of isolation and cultivation of neural stem cells from newborn rat spinal cords and identification of its differentiation,to establish cytological foundation for vicariousness therapy of peripheral nerveous system diseases by using spinal stem cells.

目的：探讨分离、培养新生大鼠脊髓源性神经干细胞的方法并对其进行分化鉴定，为临床应用脊髓神经干细胞进行周围神经系统疾病的替代治疗奠定细胞学基础。

Ping teachers arms tightly to my shoulder, very hard to send a lower body forward, arms around my own level teachers waist slim, flat hand with the teachers abundant buttocks plump, stem strength in her Daoli pulls out inserts , flat-teacher fold it tightly with the inner wall of the Road, sets of line with my stems, small lips wreathe my stem tightly.

平老师紧紧搂着我的肩膀，用力向前挺送着下体，我一手搂着平老师苗条的腰肢，一手抱着平老师肥美的丰臀，茎用力在她的道里抽插，平老师那紧紧的带有褶皱的道内壁套撸着我的茎，小唇紧紧裹住我的茎。

Analysis indicated that the ratios of the Cd forms extracted by ethanol and by deionized water in root, and the ratios of soluble Cd in root cell showed accordancy with the ratio of Cd transported from root to aboveground parts, and also the ratios of the Cd forms extracted by ethanol and by deionized water in stem, and the ratios of soluble Cd in stem cell showed accordancy with the ratio of Cd translocated from rice straw to grain.

分析表明，两供试品种根组织中乙醇提取态和去离子水提取态Cd的比例及根细胞中可溶性Cd的比例与根系吸收的Cd向地上部的分配比例存在一致性；茎组织中乙醇提取态和去离子水提取态Cd的比例及茎细胞中可溶性Cd的比例与植株地上部积累的Cd向籽粒分配的比例间存在一致性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。