mutagen造句

• The first chemical mutagens to be discovered were the mustard gases used in world war i .
  最初发现的诱变剂是第一次世界大战所用的芥子气。
• New variants of some plant viruses have been produced artificially in the laboratory by treating pure virus strains with mutagens .
  用亚硝酸之类的诱变处理纯病毒株系，能在实验室内人为地使有些植物病毒产生新变种。
• Mutagtnic effect of some new mutagens on rice
  几种新的诱变因素对水稻的诱变效应
• Methods for disposing mutagens , teratogens and carcinogens
  致突变物致畸物和致癌物的处理方法
• Methods for disposing mutagens , teratogens and carcinogens
  致突变物,致畸物和致癌物的处理方法
• Study on removing dietary mutagen by antimutagenic lactic acid bacteria
  抗突变活性乳酸菌对膳食中诱变剂去除作用研究进展
• The application and studies of micronucleus assays with fish to screen mutagen in water
  鱼微核试验筛检水体诱变物的应用与研究
• Similarly , the cellular response to the environmental mutagens is not always initiated by dna damage
  同样地，环境诱变剂诱发的细胞应答反应也不只是单纯地由dna损伤所触发的。
• Environmental mutagens can also induce mutations at undamaged sites and result in the so - called nontargeted mutation
  环境诱变剂引起的突变也可发生在非dna损伤部位，我们称之为非定标性突变( nontargetedmutagenesis ) 。
• 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( nontargetedmutagenesis ) 。
• Many constituents are mutagens and carcinogenic such as alkenes , nitrosamines , polynuclear aromatic and heterocyclic hydrocarbons , amines
  烟草的很多成分都会引起有机体突变以及致癌,如烯烃化合物,亚硝胺,多核芳香烃以及多环碳氢化合物和铵
• Insertional mutagenesis is a method for identifying genes by using the integration of dna as the mutagen , thereby facilitating the cloning of the mutated gene
  插入突变是一种通过外源dna整合的方式来获得突变体，并克隆得到对应突变基因的方法。
• The paper mainly deals with the chromosome doubling method and mutagen types for medicinal plants and other factors affecting chromosome doubling
  本文着重介绍了当前药用植物染色体加倍所采用的方法、诱变剂类型以及其它一些影响植物染色体加倍的因素。
• Through a series of mutagen tests , a mutant strain of monascus spp ( m 12 - 69 ) from ml2 was acquired , which can produce much higher monacolin k than m12 , and almost same citrinin level as m12
  以之为出发菌株，通过诱变筛选，获得一株monacolink产率有明显提高而桔霉素产率仅为0 . 13ng g ( elisa )的突变株，编号为m12 - 69 。
• Streptomyces tenebrarius a04 , the producer ( with a titer of 2874u / ml ) of single component of nebramycin ? apramycin was studied in this paper . after treatment of spore suspension and mycelia shivered by supersonic with mutagen , combined with the application of screening models , some stable high yield apramycin - producing strains ( with a fermentation titer of 4800 - 5200u / ml by shaking flask ) such as a2 - 23 , a2 - 30 , asm6 and al - 16 were obtained
  本文以尼拉霉素单一组分?安普霉素产生菌s . tenebrariusa04 (发酵单位为2847u ml )为出发菌株，通过对单孢子悬液和超声波破碎菌体的诱变处理并复合筛选模型，获得了遗传特性稳定的单组分高产菌株： a2 - 23 、 a2 - 30 、 asm6 、 a1 - 16 ，摇瓶发酵单位达4800 - 5200u ml 。
• The paper adopted the common breeding way by series of mutagen treating to the yeast ' s cell and spheroplast . finally , the excellent mutant 75l 3555 was obtained . its nature of the production was determined and it can product ethanol on the condition of 40 and have high fermentative speed and stable production . on the other hand , the test was made that the best fermentative condition was found . in the malt juice , adding 0 . 02 % k + or 0 . 03 % a13 + can increase the production strikingly and adding some degree concentration trahalose can increase the production too and cut short the time of taming . in the study of using molasses producting ethanol , we can obtain high productivity contained the following composition : nitrogen source 1 . 5 % maize and 0 . 075 % ( nh4 ) 2so4
  本实验以常规的育种方法，通过对酵母细胞悬液和原生质体进行一系列诱变，经过大量的筛选，最终选育出一株耐高温高产菌株75l _ ( 3566 ) ，并对其进行了生产性能的测定。 75l _ ( 3566 )在40条件下，浓度为20 bx的麦芽汁发酵液中，产酒率高达11 . 5 ，而且发酵速度快，发酵周期可缩短12h ，其生产性能稳定，可以适应大部分以淀粉质为原料的生产厂家的需要。同时本实验对75l _ ( 3566 )进行了发酵条件优化的初步研究。
• Studies of genes related to heart development in drosophila contribute to reveal the mechanisms of human heart development and the congenital heart diseases . to clone and identify new genes that control the heart development , by a way of chemical mutagen , ems , we have established 1 , 200 balanced - lethal lines on chromosome 2 and 3 . with the screening the 330 stocks with immunochemical method using heart - specific antibody , mab . no . 3 , we detected 60 lethal lines showing heart mutant phynotype
  为了克隆和鉴定控制心脏发育的新基因，本研究利用化学诱变剂甲磺酸乙酯大规模地诱变果蝇，并且建立了1200个第二和第三染色体的平衡致死系，利用心脏组织特异抗体mab . no . 3对其中330个品系进行免疫化学方法筛选，观察到有60个致死系表现出心脏突变表型， 20个品系的心脏突变表型有待进一步证实。
• Monofunctional alkylating agent n - methyl - n ' - nitro - n - nitrosoguanidine ( mnng ) is a widely spread environmental mutagen and carcinogen that targets dna and proteins to generate adducts . among the adducts , o6 - alkyl guanine is the predominant mutagenic lesion because of its mispairing properties , which can eventually lead to chromosomal aberrations , point mutations , and cell death . this lesion also appears to be involved in tumor initiation , particularly in gastric carcinogenesis
  单功能烷化剂n -甲基- n -硝基- n -亚硝基胍( mnng )是一种在环境中广泛存在的化学诱变剂和致癌剂，它能和dna及蛋白质等生物大分子形成加合物( adduct ) ，其引起的与突变有关的主要dna损伤类型是o ~ 6 -甲基鸟嘌呤，这种损伤与肿瘤尤其是胃癌的发生密切相关。