回复突变

结果：nHAC的浸提液各剂量组对鼠伤寒沙门菌的致突变比值均小于2，nHAC不会引起鼠伤寒沙门菌的回复突变数增加。

Results : The mutagenesis rates of murine typhoid salmonella in the experimental groups of all dosage levers were less then 2 , and nHAC would not cause the increase of the back mutation in murine typhoid salmonella .

此结果表明，抗性克隆不是源于玉米黑粉菌敏感细胞的回复突变。

The result showed that the resistant clones were not originated from back mutation of sensitive cell of Ustilago maydis .

E区基因序列与野毒株差异的8个氨基酸没有一个发生回复突变。

Gene sequencing of E protein showed no reverse mutation in the 8 amino acids different from those of wild strain .

应用营养缺陷型回复突变的方法筛选枯草杆菌（Bacillussubtilis）α-淀粉酶的高产菌株

Selection of high α - amylase yeilding strains of Bacillus subtilis by auxotrophic reversion technique

鼠伤寒沙门氏菌回复突变试验（Ames试验）：采用平板渗入法。

Salmonella Typhimurium Reverse Mutation Assay ( Ames test ): it adopts plate permeating method .

GLP体制下细菌回复突变试验的实施

Performance of bacterial reverse mutation test in GLP system

目的对应用表面化学着色工艺研制的彩色正畸不锈钢弓丝进行鼠伤寒沙门氏菌回复突变试验（Ames试验），研究材料是否具有遗传危害和潜在的致癌作用。

Objective To study the potential mutagenicity of colored stainless steel applying chemical coloration technology for orthodontic wire by Ames test .

用吖啶橙消除质粒试验及亚硝基胍回复突变试验，初步证明抗生素抗性基因在质粒上，而决定多粘菌素E生物合成的基因可能在染色体上。

The elimination of plasmid by acridine orange and the reversion test by NTG indicated preliminarily that the gene of biosynthesis of polymyxin E is located on the chromosome , but those antibiotic resistance genes are located on the plasmid .

方法：应用鼠伤寒沙门菌回复突变实验（Ames实验）、哺乳动物培养细胞染色体畸变（ChromosomeAberration，CA）实验、小鼠微核（Micronucleus，MN）实验和哺乳动物骨髓细胞CA实验。

Method : salmonella typhimurium mutagenicity test ( Ames test ), chromosome aberration ( CA ) test of cultivated cells of mammalian , micronucleus test in mice and mammalian bone marrow CA test were used .

采用鼠伤寒沙门氏菌回复突变试验（Ames试验）、小鼠骨髓多染红细胞微核试验、小鼠睾丸精母细胞染色体畸变试验、V79细胞基因突变试验来检测有无致突变作用。

The Ames test , Erythrocyte micronucleus assay , Spermatogonial chromosomal aberrations test and In vitro mammalian cell gene mutation test were used .

对互隔交链孢霉毒素&交链孢酚单甲醚（AlternariolMonomethylEther，AME）和交链孢酚（Alternariol.AOH）的合成物进行了细菌回复突变试验.检测其诱变性。

Mutagenicity of synthetical and extractive AME ( alternariol monomethyl ether ) and AOH ( al-ternariol ) of Alternaria alternata was studied with reverse mutation test of bacteria .

结果Ames试验中各菌株（加与不加S9）回复突变菌落数均小于阴性对照组2倍，呈阴性；

Results Number of bacteria colony of reverse mutation in various strains with or without S9 was less than that in negative controls , showing a negative Ames test .

利用亚硝基胍（NTG）对红霉素链霉菌（S.erythreusUV80）活性菌株进行回复突变，获得了红霉素高产量变株。

The higher yielding strain was obtained through the reverse mutant of a zero producer of Streptomyces erythreus UV 80 by NTG treatment .

对正定霉素和甲基甲烷磺酸酯所诱发的TA98和TA100菌株的回复突变，具有抗突变作用；

It had the anti-mutation function that can inhibit mutagenicity of Daunomycin and Methane Sulfonate in strains TA98 and TA100 .

结果：指状青霉提取物：①可明显地诱导ND-160菌株回复突变；

RESULTS : ① The extract from penicillium digitatum significantly induced the reverse mutation of E. coli ND - 160 ;

方法将复方丹参滴丸不同剂量诱导处理后的大鼠肝S9作为代谢活化系统进行Ames试验，比较加入S9前后2AAF对鼠伤寒沙门氏菌的回复突变率。

Methods Ames test was conducted with rat liver S9 metabolic activation system ( S9-mix ) induced by Compound Danshen Dripping Pills at different doses , and the amounts of reverse mutation induced by 2-AAF were compared between groups with different S9-mix .

工业区大气颗粒物质和有机提取物致沙门氏菌TA98和TA100回复突变率高于其他各区采样点（P<0.05或P<0.01）。

Mutagenic activities of PM and its extracted organic matters ( EOM ) were significantly higher in the industrial area than those in the other sampling area ( P < 0.05 or P < 0.01 ) .

用细菌回复突变试验检测两种高效光诱导剂的致突变性

Mutagenicity of Two Highly Effective Photoinitiators Using Bacterial Reverse Mutation Assay

溴化乙锭诱导发光细菌暗变株回复突变的研究

Study on Genie Mutation Induced by Ethidium Bromide in Dark Variant of Luminous Bacteria

发生回复突变的时间一般约需1年。

It is thought to take about a year for this mutation to happen .

同时，复合材料的生理盐水浸取液不引起鼠伤寒沙门氏菌回复突变数增加。

The material does not increase the number of reversion mutation in Ames test .

但这些菌苗减毒的遗传背景不清楚，存在回复突变的可能性。

However there is possibility of re-version to virulence because the attenuated genetic back-ground is unclear .

聚（β-羟基丁酸酯）材料的鼠伤寒沙门氏菌回复突变试验

Salmonella typhimurium Ames test for poly-beta-hydroxybutyrate

西瓜倍性回复突变研究

Studies on Watermelon Ploidy Revertant

志贺氏菌链霉素依赖菌株回复突变的研究&Ⅱ.回复突变株的致病力

Study of the reverse mutation of the streptomycin-dependent Shigella strains ⅱ . the pathogenecity of the revertants

目的与方法：本文研究乙酰氨基己酸锌对小鼠的急性毒性作用以及用鼠伤寒沙门氏菌突变株的回复突变性检测乙酰氨基己酸锌是否具有致突变性。

Objective and Methods : The acute toxicity of mice and mutagenesis ( Ames assay ) of ZAC were evaluated .

对诱变糯质突变基因的遗传、等位性、基因的剂量效应以及基因的回复突变进行了研究；

For genetic analysis , allelic relationship , dosage efficiency as well as mutation reversion of induced waxy gene had been studied .

糯质基因突变系与糯质基因回复突变系和野生型亲本间除千粒重差异显著外，其他性状差异均不显著。

Except for1000-grain weight , no significant difference in other traits was found among the induced waxy mutants , the waxy mutants reversion and the wilds .

营养缺陷型菌株原生质体回复突变率小于10￣（－6）。

Then at the 6 point will lead to a higher pregnancy rate . The reverse mutation frequency of the protoplast of the auxotrophic mutants was less than 10 ￣( - 6 ) .

然而，如果人群中有很多人未接种疫苗，他们就可传播此病毒，直到其回复突变为致病形式的病毒，这如同尼日利亚发生的一样。

However , if there are lots of unvaccinated people in the population , they can pass on this strain until it happens to mutate back into a disease-causing form , as happened in Nigeria .