脱氧核糖核酸分子是由许多更小的分子组成的。
DNA（脱氧核糖核酸）链通过后代得到复制。
Strands of DNA are reproduced through succeeding generations.
该病毒是一种单链核糖核酸（RNA）病毒，属于沙粒病毒科。
The virus is a single-stranded RNA virus belonging to the virus family Arenaviridae.
用脱氧核糖核酸末端转移酶介导的缺口末端标记技术（TUNEL）检测细胞凋亡。
Terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) technique were applied to deterimine the apoptotic cells.
染色体来基因库，核糖核酸生命源。
早期研究发现小分子核糖核酸还可以促进干细胞的产生。
Early studies suggest that microRNAs can also boost the production of stem cells in culture.
这一信息决定某段核糖核酸(RNA)是否被剪断。
That information determined whether or not a string of RNA was snipped.
生命起源研究的许多团体都集中在核糖核酸，它相信已先于活细胞。
Many groups studying the origins of life have focused on RNA, which is believed to have pre-dated living cells.
了解脱氧核糖核酸的分子结构开辟了一个研究的新领域。
Understanding the D-N-A molecule has opened up new areas of research.
其他研究显示，核糖核酸基因调控中起着其他细胞的功能和重要作用。
Other studies revealed that RNA plays a major role in gene regulation and other cellular functions.
简言之，脱氧核糖核酸产生了信使核糖核酸，信使核糖核酸又产生了蛋白质。
In short, DNA makes messenger RNA, and messenger RNA makes proteins.
使用丙肝病毒重组免疫印迹分析技术和丙肝病毒核糖核酸检测对丙肝病毒感染进行确诊。
HCV recombinant immunoblot assay (RIBA) and HCV RNA testing are used to confirm the diagnosis of HCV infection.
DNA（脱氧核糖核酸）的分子是一种双螺旋结构，酷似一架沿纵向扭曲的梯子。
The DNA molecule is a double helix, resembling a ladder that's been twisted along its length.
哈佛大学的德里克·罗斯进行了相似的研究，他使用合成核糖核酸信使分子模仿病变基因的活动。
Derrick Rossi of Harvard University has performed a similar trick using synthetic RNA messenger molecules to mimic the activity of the genes in question.
对分离的基因来说，它可被定义成一组需要用来产生蛋白质的脱氧核糖核酸序列，即外子。
Given the occurrence of split genes, it might be re-defined as the set of DNA sequences (exons) that are required to produce a single polypeptide.
研究人员在20年前就已经发现了吉姆萨阴性细菌，例如大肠杆菌，可以降解并重新利用其核糖核酸。
Researchers have known for more than 20 years how so-called gram-negative bacteria like Escherichia coli degrade and recycle their RNA.
科学家认为，女性更健康的原因可能在于微rna(核糖核酸)，它是染色体上RNA编码的短片段。
The reason why women are more robust appears to be microRNAs - short strands of RNA encoded on the chromosome, scientists believe.
小分子核糖核酸可以用来封闭人体细胞，使之免受致病病毒的侵扰，或者使病毒丧失侵入细胞的能力。
MicroRNAs could be used to seal off human cells from disease-causing viruses, or to disable viruses that gain entry.
在20世纪90年代初，研究人员在研究一种虫子的基因时发现了一种很短却又与众不同的核糖核酸。
In the early 1990s, researchers studying a species of worm discovered genes for a very short and very unusual piece of RNA.
这种小核糖核酸分子没有参与合成蛋白质，而是附着在信使核糖核酸上(如图)，来消灭它们。
Instead of synthesizing proteins, this tiny RNA molecule latched onto messenger RNAs (chart), causing their destruction.
核糖核酸干扰(RNAi)会攻击恶性组织细胞里的专门基因，让其丧失功能并且最终将其杀死。
RNAi (Ribonucleic acid interference) is a technique that attacks specific genes in malign cells, disabling functions inside and killing them.
此外，因为小分子核糖核酸的构造既小又简单，所以可以制造核糖核酸，把它当作研究工具来使用。
Moreover, because microRNAs are so small and simple in structure, they can be manufactured for use as research tools.
构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。
Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.
构成生命体的许多关键分子都有一个特定的导向，或者说是旋向性：脱氧核糖核酸右旋，氨基酸左旋。
Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left.
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