查询词典 stem cells

Now it is generally accepted that CD34〓 cells represent stem cells and progenitor cells. CD34〓 cells are better target cells for studying regulation of hemopoiesis, as they are relatively homogenous, compared with mononuclear cells seperated from bone marrow or blood.

目前普遍认为CD34〓细胞代表造血干细胞和祖细胞，因为与骨髓或血中分离的单个核细胞比较，具有相对的均一性，在造血调控的研究中是一个较好的靶细胞。

We found that 1 mutant EG4 cells showed typical characteristics of pluripotent stem cells which had no obvious difference with wild cells; 2 When induced by 10〓 M retinoic acid , mutant EG4 cells differentiated into adipocytes with high frequency compared with mutant cells, suggested that EGFR plays a role in adipocyte differentiation; 3 when injected into nude mice, mutant teratocarcinomas contained a large amount of connective tissues as well as skeletal muscle, while wild EG4 cells produced frequently cartilage, keratinocyte and neuroepithelium.

我们建立了稳定表达胞内区功能缺失的外源EGFR cDNA片段的EG4细胞，分析其生长分化特性，发现 1）突变型细胞可在未分化状态下维持长时间的增殖，表明EGFR对EG多能干细胞表型无明显影响；2）〓 M的维甲酸A(retinoid acid A，RA)诱导后，大部分对照组细胞分化为脂肪细胞，而突变型细胞分化为脂肪细胞的比例明显较少，表明EGFR在脂肪细胞的发育分化中具有一定的调节作用；3）畸胎瘤切片分析显示，突变型瘤组织分布有大量的未分化细胞和结缔组织，分化细胞以肌肉细胞为主；对照组瘤组织含丰富的角质上皮、软骨、神经管等依赖EGFR的分化组织。

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。

RESULTS:① Morphological observation of bone marrow-derived mensenchymal stem cells: Primary rabbit bone marrow-derived mesenchymal stem cells could cover the Petri dish fully in 7 or8 days and could passage stably.

主要观察指标：①骨髓间充质干细胞的形态学观察。

We sought to determine the relationship between the persistence of iron-dependent MRI signals and cell survival 3 weeks after injection of syngeneic or xenogeneic ferumoxides-labeled stem cells (cardiac-derived stem cells) in rats.

本研究试图明确铁依赖的MRI信号和ferumoxides 标记的同种/异种大鼠心脏干细胞注射后3周产生的MRI信号之间的相关性。

Treatment designed to reduce rejection also included pre-transplant injection of a stem cell inducer, a drug that depletes T cells given after transplantation, and immune system irradiation before chimeric stem cells were reinfused.

减少免疫排斥的治疗方法不仅还包括在器官移植前注入干细胞的诱导剂，这是一种在器官移植之后去除T细胞的药物，且在嵌合体干细胞再次注入时可以诱发免疫系统的反应。

Laura Grabel, a professor of biology at Wesleyan, whose $800,000 research project focuses on epilepsy, has done some similar work using stem cells in mice, and said that using human stem cells would take the research one step closer to an ability to apply it in patients.

Laura Grabel是卫理公会派一名生物学教授，他的80万研究计划是有关惊厥，已经用鼠干细胞做了一些类似的工作，并且说：运用人干细胞将使该研究被用于人类的能力更进一步。

Another stem cell source that is being pursued, and that may in fact be closer to the goal of producing a variety of bone fide spinal cord cells, is stem cells from the spinal cord itself.

另外一个可以被利用的细胞来源，也可以说是最可能产生各种不同类型的脊髓细胞的细胞来源，应该是脊髓本身来源的干细胞。

In summary, we established a new model for investigating the functional reconstruction capability with dental pulp stem cells transplantation in vivo. We also revealed dental pulp stem cells from one deciduous tooth can be expanded in vitro which possibly can be utilized for teeth replacement therapy in the future.

总括来说，本研究建立了一个新的研究牙髓干细胞应用於牙齿再生治疗的模式，我们发现从乳牙中可以分离出牙髓干细胞，未来并可进一步应用来修复牙齿的缺损。

Several years ago, Lorenza Lazzari, of the Maggiore Foundation Hospital in Milan, Italy, and her colleagues detected low levels of Oct4 expression in adult stem cells, but their negative controls, which did not contain stem cells, yielded the same result.

早在几年前，意大利米兰的Maggiore基金会医院的Lorenza Lazzari及她的同事就发现，成熟干细胞中Oct4蛋白的表达水平低，但是不含干细胞的阴性对照也有相同结果。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。