Dna methylation is atracting more and more attention in the research of tumor and its diagnosis and cure Dna甲基化在肿瘤发生发展机制的研究及肿瘤的诊断与治疗中越来越受到重视。
" this suggests that the presence of dna methylation in normal tissue adjacent to tumors is more prealent that preiously thought . “这表明瘤旁组织的dna甲基化比我们原先想的要普遍。 ”
The level of 5 - metylcytosine in dna of plant decreased 14 . 52 % compared to control after treatment with ga of 300mg / l 300mg l赤霉素处理后，植株茎尖的dna甲基化水平比对照下降了14 . 52 。
By measuring surface tension , adsorptive content and potential of the superplasticizer solution , the mechanism was studied 4 。而添加磺甲基化产物的砂浆因较长时间的缓凝，强度有所下降。
Researchers looked for - and found - a chemical change called dna methylation in healthy tissue adjacent to breast tumors 研究者寻找并发现了靠近肿瘤组织的健康组织中有“ dna甲基化”这种化学改变。
In addition , the study identified three other genes that were abnormally methylated in both tumor and normal tissues 另外，这个研究还发现了三个另外的基因，他们在肿瘤和正常的组织中均不正常的甲基化。
The group now aims to map the methylation patterns in 200 samples representing the entire human genome and all the major human tissues 小组现在打算在代表整个的人类基因组和所有的主要人类组织的200个样本中,来描绘映射甲基化型态。
Scientists have already found out how the methyl groups are attached . the reverse process of demethylation , however , has been poorly understood so far 科学家们已经发现甲基团是如何被黏附的了，但是对逆转的去甲基化过程却知之甚少。
This silencing also affects the function of many tumor suppressor genes , which , in their unmethylated state , put the brakes on uncontrolled cell growth 这种沉默也影响许多抑癌基因的功能，这些基因在非甲基化状态下可以阻止不受控制的细胞生长。
The chloromethylation of acetanilide and its derivatives in a polyformaldehyde - hc1 system gave n - substituted products as the major product 摘要?察了乙酰苯胺及其衍生物在多聚甲醛盐酸体系下的氯甲基化反应，结果表明， n -氯甲基化反应的产物是主要产物。
