A new altered sites mutagenesis systems for the cloning DNA is described.

Mutagenic effects on TA 97, TA 98 , TA 100 , TA 102 were studied in Ames test.

应用Ames试验观察对测试菌株TA97,TA98,TA100, TA102的诱变作用.

Its advantages are high mutagenic ratio and optimized rate, and high reproduction speed.

该方法具有诱变率高,优选率高等优点, 并且能够迅速繁育苗木,缩短育种年限.

Conclusion Anti-mutagenic effect of SS was demonstrated in these two different in vitro genotoxicity assays.

结论SS在二项不同遗传终点的体外测试中,均显示出明确 抗 突变作用.

These results indicated that the waste water might have strong mutagenic action related to organic pollutant.

提示各厂排放的废水可能具有较强的致突变作用.

Objective To explore the potential mutagenic action of pullulan on mice.

目的研究普鲁兰多糖的潜在致突变性.

It had low toxicity no mutagenic effect.

性能稳定、低毒、无刺激性、无致突变作用.

Objective To investigate the mutagenicity of drinking water and water source in a certain region.

目的探讨某地区各类饮用水及水源水致突变性.

Objective To study general toxicity, hereditary toxicity and mutagenicity of quaternary ammonium compound detergent.

目的研究季氨化合物洗消剂的毒性 、 遗传毒性及致突变性.

Therefore, the sewage discharged from a certain ethylene plant is of significant mutagenicity to fish.

可见, 某乙烯工厂排放的污水对鱼类有明显的致突变作用.

Nitrated Polycyclic aromatic hydrocarbons are a class of important pollutants with direct mutagenicity.

硝基多环芳烃是一类重要的具有直接致突变性的环境污染物.

Objective : To investigate the current eutrophication status and mutagenicity of Liwan Lake water.

目的: 摸清广州市荔湾湖水质富营养化现状及其水质的致突变性.

In ths research , vitro tests of cytotoxicological method was used to evaluate mutagenicity of thallium.

作者用体外实验方法研究了铊的细胞诱变作用.

Objective : To study the effects of propolis against gene mutation induced by powerful mutagens in mice.

目的: 探讨蜂胶对环磷酰胺等强诱变剂诱发基因突变的抑制作用.

The method of vicia fabe micronucleus technique is applicable to detect environmental mutagens.

综述了国内外应用蚕豆根尖细胞微核技术检测环境突变物的研究.

In addition, expression of mutant forms of TRF 2 induced a growth arrest with characteristics of senescence.

此外, 突变体的表达形式的TRF2诱导生长抑制衰老与特点.

The mutant holds onto its leaves longer than the wild type.

突变体比野生型不易落叶.

Summarized study on salt tolerance of tomato about physiological, gene, salt mutant and transgenic tomato.

摘要对国内外番茄耐盐生理 、 与耐盐性相关的基因 、 耐盐突变体及其转基因耐盐番茄的研究进展进行了综述.

The super mutant walks to one side of the room, and lights up acigarette.

{300}{}{房间的一侧烟头已经被堆成了小山.

You spent your entire adolescence waiting for your mutant powers to appear.

你整个青春期都在等待变异能力的出现.

In the new study, the Utah biologists used mutant nematode worms lacking beta spectrin.

在这项新的研究中, 犹他的生物学家们使用了缺失β-血影蛋白的突变线虫.