查询词典 stem

There is an emerging understanding of the importance of the vascular system within stem cell niches. Here, we examine whether neural stem cells in the adult subventricular zone lie close to blood vessels, using three-dimensional whole mounts, confocal microscopy, and automated computer-based image quantification. We found that the SVZ contains a rich plexus of blood vessels that snake along and within neuroblast chains.

在另一篇来自美国和中国台湾科学家的文章中，作者研究了成年SVZ中神经干细胞是否紧密的位于血管周围，利用多种技术，科学家发现SVZ中成神经细胞链内以及周围含有丰富的血管丛。

Background--Biological pacemaking has been performed with iral ectors, human embryonic stem cells, and adult human mesenchymal stem cells as deliery systems.

研究背景：人们已经应用病毒噬菌体、人类间充质干细胞、和人胚胎干细胞作为载体系统构建生物起搏器。

EMF of 50 Hz frequency and 0.8 mT intensity can change intracellular free calcium ion concentration of bone marrow mesenchymal stem cells, and the change play a key role in the cellular proliferation and play a partial role in the differentiation of bone marrow mesenchymal stem cells into osteoblasts.

在50 Hz、0.8 mT电磁场作用下，骨髓间充质干细胞Ca2+内流发生变化，且该变化在骨髓间充质干细胞向成骨方向分化过程中产生部分抑制作用，在促其增殖过程中起主导作用。

The cowpea number per pod, weight per pod, length per pod, number of inflorescence; and the height of main stem, number of branches and node of main stem at seedling-pulling at each single plant were investigated for the yield-calculating, and meanwhile, the analysis of relevant factor and path analysis of the component of yield/plant was conducted.

方法］定株调查每株美国无架豇豆的豆英数、英重、英长、花序数，拉秧时测定主茎高、分枝数及主茎节数，并计算单株产量，进行单株产量构成因素的相关分析和通径分析。

Continuous joint stem is the direction of paulownia stem form selection.

连续接干是泡桐干形选择的方向。

Days later, BrdU-labelled neural stem cells and VEGF-secreting neural stem cells were transplanted into the penumbra zones respectively.

移植后1周免疫荧光染色观察转基因神经干细胞在脑内的基因表达情况。

Renee Reijo Pera, a biologist at Stanford's Institute for Stem Cell Biology and Regenerative Medicine, points out that earlier attempts to create offspring with sperm from embryonic stem cells resulted in short-lived mouse pups that were either giants or midgets.

斯坦福干细胞生物与再生医学研究所的生物学家雷妮·雷霍·派拉指出，以前曾尝试用胚胎干细胞培育的精子来繁殖后代，结果所产生的幼鼠寿命短暂，而且体形不是特大就是特小。

Corm An organ of perennation and vegetative reproduction, consisting of a short erect fleshy swollen underground stem, usually broader than high and covered with membranous scales. It stores food material in the stem and bears buds in the axils of the scalelike leaf remains of the previous years ' growth.

球茎：球形或扁球形短而肥大的地下茎，节和节间明显，节上有退化的鳞片状叶和腋芽，顶端有一个显著的顶芽，茎内储藏着大量的营养物质，有繁殖作用。

Adult stem cells and cornea stem cells are two other possible sources for generating immature photoreceptor cells.

成人的干细胞和角膜干细胞是两个其他可能产生未成熟感光细胞的来源。

They first organize and analyze a set of data with the stem-and-leaf diagram. They point out that the diagram is used for a small number of data and the original data can be retained in the diagram. To compare two different set of data of the same nature, they propose the use of a back to back stem-and-leaf diagram.

导师首先做一组数据的处理和分析，干叶图可以用作表达小量的数据，同时原来的数据仍会保留在干叶图中；背靠背干叶图是用作比较两组数据之用，且所有数据仍会保留在背靠背干叶图中。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。