查询词典 chain reaction

The reaction of acetone with chlorine gas is a rapid chain reaction.

丙酮与氯气反应制取一氯丙酮，是一个快速的连锁反应。

DNA were abstracted by means of phenol chloroform, amplification and cataphoresis test of polymerase chain reaction of target DNA,primer sequence of gene segment amplification of 5-hydroxytryptamine (5-HT) 2A receptor gene T102C: 5'-TCT GCT ACA AGT TCT GGC TT-3', 5 '-CTG CAG CTT TTT CTC TAG GG-3'; Reaction system of 50 μL, DNA 0.5 μg,Primer 50 pmol,TagDNA enzyme 2U were added with dNTP to the final concentration of 200 μmol/L.

应用常规苯酚氯仿法抽提DNA，目的DNA的聚合酶链反应扩增及电泳检测，5-羟色胺2A受体基因T102C基因片断扩增的引物序列：5'-TCT GCT ACA AGT TCT GGC TT-3'。5'-CTG CAG CTY TTT CTC TAGGG-3'；采用50 μL反应体系，DNA 0.5 μg，引物50 pmol，TagDNA酶2U加dNTP至终浓度200μmol/L。

Especially of fissionable material able to sustain a chain reaction in such a manner that the rate of reaction increases.

能够以反应速度不断增加的方式继续连锁反应。

Since respiratory tract infections, including IB, are critical in the poultry industry, a multiplex reverse transcription-polymerase chain reaction assay that detects avian viral respiratory pathogens in the same reaction was developed for the economic and clinical needs. Four sets of specific oligonucleotide primers for infectious laryngotracheitis virus, IBV, Newcastle disease virus, and avian influenza virus were used in this study.

由於呼吸道疾病对於家禽产业有很大的影响，因此基於经济与应用在临床上区别诊断的考量，本实验室发展多引子反转录聚合酶链锁反应，一共使用四组针对传染性喉头气管炎病毒、传染性支气管炎病毒、新城病病毒、以及家禽流行性感冒病毒的特异性引子来进行测试。

It is a super natural antioxidant, and can quench monomorphous oxygen, remove free radicals, and eliminate peroxide chain reaction, thus protect cells against the damage of oxidation reaction.

它可以淬灭单形态氧，清除自由基以及有效的过氧化链式反应，从而保护细胞免受氧化反应的伤害。

In contrast, exposure to ectopically expressed noncanonical Wnt11 markedly decreased the expression of Oct-4 and Nanog and induced mRNA expression (quantitative real-time reverse-transcription polymerase chain reaction) of cardiac-specific genes (Nkx2.5, GATA-4, atrial natriuretic peptide,- and -myosin heavy chain, and cardiac troponin T) by day 3 with subsequent progression to a pattern characteristic of the cardiac fetal gene program.

对比之下，接触到非典型wnt11能明显降低Oct-4 和 Nanog表达和在第3天出现诱导心脏特异性基因（Nkx2.5，GATA - 4，心房利钠肽，- and -肌球蛋白重链，肌钙蛋白T）mRNA的表达（应用反转录聚合酶链式反应实时定量），随后逐渐表达为心脏胎儿基因。

Using six-color flow cytometry (with antibodies CD45, CD19, CD5, CD10, kappa, and lambda) and immunoglobulin heavy-chain gene rearrangement by reverse-transcriptase-polymerase-chain-reaction assay, we determined the association between MBL and subsequent CLL and characterized the immunoglobulin gene repertoire of the prediagnostic B-cell clones.

使用六色流式细胞术（使用CD45、CD19、CD5、CD10抗体、Ig κ和Igλ）和逆转录聚合酶链反应试验的免疫球蛋白重链基因重排，我们确定了MBL和随后的CLL之间的关系，明确了诊断前B细胞克隆的免疫球蛋白基因库。

Methods After treated with a specific demethylating agent,Aza and acetylating agent, TSA, the status of 5'CpC island methylation of ING1b gene in HT29 human colon cancer cell line was analyzed using methylation specific polymerase chain reaction,and the level of histone acetylation was analyzed by chromatin immunoprecipitation,and reverse transcription polymerase chain reactionwas used to examine ING1b mRNA expression.

应用特异性DNA甲基转移酶抑制剂5-氮-2'-脱氧胞苷（5-Aza-2'-dc，以下简称Aza）及组蛋白去乙酰化酶抑制剂曲古抑菌素A作用人结肠癌细胞株HT29后，用甲基化特异性PCR检测该ING1b基因核心启动子区域CpG岛甲基化情况，用染色质免疫沉淀检测其乙酰化组蛋白绑定的DNA情况，并用逆转录聚合酶链反应检测ING1bmRNA表达。

As a fat-soluble vitamins, vitamin E is a broken chain anti-oxidants, primary role is to block the lipid oxidation chain reaction is the body's first line of defense against oxidation.

作为一种脂溶性维生素，维生素E属断链抗氧化剂，主要作用是阻断脂肪氧化的反应链，是体内抗氧化的第一道防线。

The long specific DNA probes were synthesized by polymerase chain reaction in the highly specific gene sequences of above 10 bacteria. The species-specific probes synthesized were inoculated on a nitrocellulose filter and hybridized with template DNA labeled with long-arm photosensitive biotin. The signal of hybridization reaction was observed to detect which bacteria infected. The sensitivity and specificity of the method were studied.

在这10种病原菌高度特异的基因序列内利用聚合酶链反应合成上述10种细菌特异的长链DNA探针，并将合成的特异探针固定在硝酸纤维素膜上，与用长臂光敏生物素标记后的模板DNA进行斑点杂交反应，通过观察杂交信号判断存在何种细菌感染，同时研究该方法的敏感性和特异性。2。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。