Adenine and guanine are purines and cytosine and thymine are pyrimidines.
腺嘌呤和鸟嘌呤是嘌呤和胞嘧啶和胸腺嘧啶是嘧啶。
Researchers at purdue university used synthetic forms of guanine and cytosine.
美国普渡大学的研究人员使用的是合成的鸟嘌呤与胞嘧啶。
The other two, thymine and cytosine, are single ring structures called pyrimidines.
另两个为胸腺嘧啶和胞嘧啶，即称为嘧啶的单环结构。
To make Z-DNA typically requires a stretch of alternating cytosine and guanine bases.
形成Z-DNA通常需要一段交替出现的胞嘧啶与鸟嘌呤碱基。
Methods Cidofovir was synthesized via 6-step reactions with cytosine as the starting material.
方法以胞嘧啶为起始原料，经六步反应合成西多福韦。
The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.
工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。
A white, crystalline nucleoside, C9H13N3O5, composed of one molecule each of cytosine and ribose.
胞苷一种白色的晶状核苷，c9h13n3o5，由每个。
The methyl groups are attached only to specific cytosine bases - one of the four building blocks of DNA.
这些甲基团只粘附于特定胞嘧啶碱基- DNA四个组成成分之一。
The most abundant bases are cytosine, thiamine, and uracil (pyrimidines) and adenine and guanine (purines).
最丰富的碱基是胞嘧啶，胸腺嘧啶，尿嘧啶，腺嘌呤和鸟嘌呤。
Objective:To study the stability and influential factors of cytosine arabinoside hydrochloride with infusion.
目的：研究盐酸阿糖胞苷在输液中的稳定性及影响因素。
These can attach themselves to cytosine , one of the four chemical bases that form the "letters" of the genetic code.
它们可以附在胞核嘧啶上，胞核嘧啶是组成基因代码的“字母”的四种碱基数之一，帮助调控转录的过程。
The binding interaction between cytosine and the gold electrode was weakened when the potential was negatively moved.
胞嘧啶的环呼吸振动频率随着电位负移而红移，这意味着它与金电极的成键作用减弱。
In certain bacteriophages, 5 - methylol cytosines have substituted for the cytosine. In the late 40s, looks up Garv e.
在某些噬菌体中，5-羟甲基胞嘧啶取代了胞嘧啶。40年代后期，查加夫。
Two potential Wells are found. One corresponds to the normal cytosine, while the other corresponds to its imino tautomer.
发现有两个势阱：其中一个对应正常的胞嘧啶，而另一个则对应它的顺式亚胺式互变异构体。
Cytosine methylation silences transposable elements in plants, vertebrates, and fungi but also regulates gene expression.
胞嘧啶的甲基化能够沉默植物、脊椎动物和真菌的转座元件，同时也能调控基因的表达。
Whether cytosine methylation is the explanation for this difference has yet to be tested, but something is clearly happening.
胞嘧啶甲基化是否能够解释这种差异还有待考察，但是的确是有些什么东西存在着。
Much is known about the "fifth base, " 5-methylcytosine, which arises when a chemical tag or methyl group is tacked onto a cytosine.
此前，科学家们已对第5种碱基有所了解——当一个化学标签或甲基被固定到一个胞嘧啶上时，第5种碱基就会出现。
This article's examples use DNA, which consists of two strands of adenine (A), cytosine (C), thymine (T), and guanine (G) nucleotides.
本文的示例使用DNA，DNA由腺嘌呤（A）、胞嘧啶（C）、胸腺嘧啶（T）和鸟嘌呤（G）组成的核苷酸双螺旋组成。
RNA could intensify the inhibitory effect of homoharringtonine and low-dose of arabinsyl cytosine on the cell proliferation of K562 cells.
RNA能增强高三尖杉酯碱联合小剂量阿糖胞苷对K562细胞增殖的抑制作用。
What relative proportions of adenine, guanine, thymine, and cytosine would you expect to find in the two DNA samples? What assumptions have you made?
在这两个DNA样品中腺嘌呤、鸟嘌呤、胞嘧啶、胸腺嘧啶之间的相互比例存在怎样的关系？
We also found that a previously used method to detect cytosine deaminated DNA, termed 3DPCR, overestimates the amount and frequency of edited HBV DNA.
研究还发现，以前用来检测DNA胞嘧啶脱氨基的被称为3D-PCR 的方法高估了编辑HBV DNA的数量和频率。
The genetic information of all living cells is stored in the DNA composed of the four canonical bases adenine (a), cytosine (c), guanine (g) and thymine (t).
所有活细胞的基因信息都储存在由四种碱基，即腺嘌呤(A)、鸟嘌呤(G)、胞嘧啶(C)、胸腺嘧啶(T)构成的DNA里。
Nucleotide N9705 produced by a strain of Streptomyces is a ramification of peptide acyl cytosine nucleotides that has a wide range of antibiotic activities.
由一株链霉菌产生的核苷N970 5是肽酰胞嘧啶核苷衍生物，具有广谱抗生活性。
He USES zeroes and ones to represent the very first chemical building blocks of life (most likely compounds based on adenine, thymine, guanine, cytosine or uracil).
他用许多0和1来表示最早期时生命的化学成分(很可能是由腺嘌呤、胸腺嘧啶、鸟嘌呤、胞嘧啶和尿嘧啶组成的化合物)。
Objective to study antitumor effect of calcium folinate (CF) and 5 fluorocytosine (5 FU) on rectal carcinoma cells transfected with cytosine deaminase (CD) gene.
目的：探讨亚叶酸钙(CF)联合5氟胞嘧啶(5FU)对转染胞嘧啶脱氨酶(CD)基因的直肠癌细胞的杀伤作用。
The extent and pattern of cytosine methylation in 24 navel orange cultivars, genomes were assessed by using the technique of methylation-sensitive amplified polymorphism (MSAP).
应用甲基化敏感扩增多态性(MSAP)技术对24个脐橙品种胞嘧啶甲基化模式和程度进行评估。
It relies upon the selective deamination of unmethylated cytosine to uracil after treatment with sodium bisulphite, usually followed by PCR amplification of the chosen target region.
它依赖于用亚硫酸氢钠处理后，非甲基化的 胞嘧啶选择性的去氨基为 尿嘧啶，通常接着所选的靶向区域的PCR扩增。
This attaches methyl groups (a carbon atom and three hydrogens) to either adenine or cytosine, two of the four chemical bases that form the alphabet of DNA, depending on the gene involved.
腺嘌呤和胞嘧啶是DNA四大成分其中之二，而到底附着于哪一个则取决于具体的基因。
This paper is the first time to analyse cytosine methylation in navel oranges using MSAP, indicating MSAP technique is efficient for detection of cytosine methylation in navel orange genomes.
本文首次运用MSAP技术对脐橙品种进行胞嘧啶甲基化分析表明，使用MSAP检测脐橙品种多态性非常有效。
This paper is the first time to analyse cytosine methylation in navel oranges using MSAP, indicating MSAP technique is efficient for detection of cytosine methylation in navel orange genomes.
本文首次运用MSAP技术对脐橙品种进行胞嘧啶甲基化分析表明，使用MSAP检测脐橙品种多态性非常有效。
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