查询词典 mutagens

The reversion frequency is increased by the addition of mutagens.

逆转的频率靠加入诱发变因素而增加。

It was known that many mutagens also exert the effect of carcinogenesis.

许多证据显示，致基因突变与致癌反应之间有著密不可分的关系。

A search for some common characteristics of the effects of chemical mutagens in Drosophila［J］.

邻苯二甲酸二丁酯对F1代仔鼠睾丸损害的可逆性恢复特性［J］。

Chromosome mutations can occur naturally but their frequency is increased by the effect of x-rays and chemical mutagens.

染色体的突变是自然发生的，但通过 X 射线或化学诱变剂可以增加突变的频率。

Little has been reported on its application in assessing effects of mutagens on earthworms in the soil ecosystem.

比较而言，如何利用该技术来检验土壤无脊椎动物活体基因损伤的报道则很少。

OBJECTIVE: To evaluate anti-mutative effects of chitosam nano-suspension on various strong positive mutagens.

目的：系统评价壳聚糖纳米混悬剂对多种强阳性诱变剂的抗突变效应。

However, environmental mutagens can also induce mutations at undamaged sites and result in the so-called nontargeted mutagenesis.

但是环境诱变剂引起的突变也可发生在非DNA损伤部位，它被称之为非定标性突变。

This paper reports the antimutagenesis effect of three different preparations of five kinds of Chongqing green tea on four direct and indirect mutagens with Ames test.

本文采用沙门氏菌回复突变试验研究了五种重庆绿茶的三种样品制备形式对四种直接和间接致突变剂体外致突变性的抑制作用。

Low energy nitrogen ion beam implantation and ultraviolet light were chosen as mutagens to treat strains.

为了提高多糖产量，以低能N+注入和紫外线辐射作为诱变手段对实验菌株进行了诱变育种。

Most of them are mutagens and carcinogens,and can induce malformation of embryo.Therefore, special attention has been focused on the environmental chemical behaviors of PAHs.

由于PAHs在环境中普遍存在、难降解、持久性强和具有较强的&三致&作用，而使其在环境中的环境化学行为备受关注。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。