英语释义

• a base found in DNA and RNA and derived from pyrimidine; pairs with guanine

片语

specific cytosine特异性胞嘧啶

Bromide cytosine溴胞嘧啶

cytosine monophosphate一磷酸胞嘧啶

Cytosine base胞嘧啶库

guanine cytosine鸟嘌呤胞嘧啶

methylated cytosine甲基化的胞嘧啶

guanidine cytosine胞嘧啶胍

cytosine deaminase胞嘧啶脱氨酶

arabinosyl cytosine阿拉伯糖胞嘧啶

英汉例句

• 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 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堿基，即腺嘌呤（a）、鸟嘌呤（g）、胞嘧啶（c）、胸腺嘧啶（t）构成的dna里。

• 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。

• 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。

• 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。

• 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 construct a recombinant adenovirus containing cytosine deaminase( cd ) gene and thymidine kinase( tk ) fusion gene for the gene therapy research of malignant tumors.

  目的：制备含胞嘧啶脱氨酶（cd）基因、胸苷激酶（tk ）基因的融合基因重组腺病毒，为恶性肿瘤的基因治疗研究作準备。

• 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。

• 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堿基-dna四个组成成分之一。

• 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。

• currently, the most active area of research involves introducing one of the cytosine genes into the cancer cell.

  目前，最活跃的研究领域涉及引进一个胞嘧啶基因进入肿瘤细胞。

• esr parameters and the structure of the free radicals produced from the reduction of cytosine in nonaqueous solutions were studied by means of an electrochemical method in conjunction with esr.

  本文采用电化学方法-esr检测联用装置，研究了胞嘧啶在阴极上还原产生自由基的esr参数及其结构；

• objective: to explore the molecular mechanisms of antitumor effect of yunnanmycin which is a novel cytosine nucleoside antibiotic.

  目的：研究具有新型结构的胞嘧啶核苷二肽类抗生素云南霉素的抗肿瘤作用的分子机理。

• objective to study the value of adenovirus mediated expression of the escherichia coli cytosine deaminase (cd) gene with 5 fluorocytosine (5 fc) in the gene therapy of ovarian cancer cells.

  目的研究胞嘧啶脱氨酶（cd）基因转移及其与5 -氟胞嘧啶（5 -fc）联合应用对卵巢癌细胞株生长的影响。

• mammals appear to have taken advantage of the possibilities afforded by cytosine methylation to provide a heritable mechanism for altering dna-protein interactions to assist in such silencing.

  哺乳动物似乎具有利用胞嘧啶甲基化提供一个可继承的机制，用来改变dna-蛋白质相互作用，辅助这个沉默。

• 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。

• they expanded the number of mesenchymal stem cells in the laboratory and then used a retrovirus vector to insert the gene cytosine deaminase into the cell.

  他们在实验室内扩增间充质干细胞数量，然后利用逆转录病毒载体将胞嘧啶脱氨酶基因插入细胞基因组中。

• cytosine methylation is required for mammalian development and is often perturbed in human cancer.

  胞嘧啶甲基化是哺乳动物的发展和需要经常在人类癌癥的扰动。

• methylation of cytosine in the 5 position of the pyrimidine ring is a major modification of the dna in most organisms.

  嘧啶环5位的胞嘧啶甲基化是大部分生物体中一个主要的dna甲基化修饰。

• 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堿基。

• methylation of cytosine bases in dna provides a layer of epigenetic control in many eukaryotes that has important implications for normal biology and disease.

  在dna甲基化的胞嘧啶堿基在许多真核生物的表观遗传调控提供了一层正常的生物学和疾病有着重要的意义。

• 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。