It is the third veto of his presidency and the second involving embryonic stem cell research.

What? s more important here is the stem cell technology that? s been used to treat these mice.

这项研究中更为重要的是此次研究中用来治疗这些老鼠的干细胞技术.

The use of stem cells in research a number of important questions.

干细胞在科研中的使用引发了许多意义重大的问题.

We now show a direct connection between hormones and breast stem cells.

我们现在显示了在乳腺癌与干细胞之间直接的关系.

Normal stem cells in the marrow form three main cell types.

在骨髓中正常干细胞分化成三类主要的细胞.

Results Marrow stem cells were spindle-shaped and active proliferation capacity in vitro.

结果细胞呈梭形或星形,4-5代内具有良好的增殖能力.

Unlike normal cells, stem cells can divide in two different ways.

与普通细胞不同, 干细胞分裂有两种途径.

The world has heard much of stem cells recently.

最近,干细胞这个词人们已经听得多了.

Objective To study the feasibility of Spermatogonial stem cells allotransplantation.

目的研究同种生精干细胞移植的后的形态学变化.

Stem cells can grow into any kind of tissue in the body.

干细胞可以生长成身体任何组织.

Stem cells have the ability to grow into other cells.

干细胞具备在其他细胞中生长的能力.

Interestingly, the team's success came from stem cells with XY ( male ) chromosomes.

有趣的是, 这个研究小组只培育成功自带XY ( 男性 ) 染色体的干细胞.

A lot of problems stem from the limitation of rules.

许多问题是源于对规则的限制.

Your patience and tolerance stem from your self-reliance .

你的耐性和容忍起源于你的 自立.

Boredom of workers may stem from continuously having to perform a simple task.

感到厌倦的工人是由于持续地操作一项单一的工作.

Good decisions stem from good judgments.

明智的决定来源于准确的判断.

All my problems stem from drink.

我所有的问题都源于酗酒。

But this grief does not stem from the child's autism in itself.

但是这种悲痛并非源于孩子的孤独症本身.

The systematic items stem from the walker's talk about the chalk.

这些体系的条款起源于步行者关于粉笔的谈话.

Indeed, they stem from the spirit of innovation and initiative.

这是创新与进取精神.

However, it is by no means certain that tougher penalties will stem the tide.

然而, 越发严峻的刑罚并不意味着肯定能遏止绑架浪潮.