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mutation frequency造句

"mutation frequency"是什么意思   

例句與造句

  1. Effect of combined treatment of caffeine benzamide and 137cs - ray on mutation frequency in soybean
    射線復(fù)合處理提高大豆突變頻率的研究
  2. An expression vector with fragment 9 in antisense orientation was constructed to block the expression of the relevant gene ( fragment 9 related gene , fnr gene ) in vero cells . interestingly , we found that the nontargeted mutation frequency induced by mnng was increased significantly , implicating that the product of the blocked gene may be involved in the inhibition of nontargeted mutation
    利用反義核酸技術(shù)構(gòu)建含反向插入9號(hào)片段的真核細(xì)胞表達(dá)重組體并轉(zhuǎn)染細(xì)胞,以獲得反義rna阻斷vero細(xì)胞中相應(yīng)基因的表達(dá),發(fā)現(xiàn)mn ’ ng誘發(fā)的非定標(biāo)性突變頻率顯著增高,提示被阻斷的相關(guān)基因的表達(dá)產(chǎn)物可能參與抑制非定標(biāo)性突變的發(fā)生。
  3. In our laboratory , a unique mutation detection system using a shuttle vector plasmid has been established to demonstrate that a low concentration of mnng ( 0 . 2 m ) can induce nontargeted mutation in mammalian cells : the mammalian cells were exposed to 0 . 2m mnng for 2 . 5h , then a shuttle plasmid pz189 carrying supf trna gene was transfected into cells after 24h culture . we found a 5 - fold higher mutation frequency of the plasmid replicated in pretreated cells than the spontaneous mutation frequency of the plasmid replicated in control cells . this kind of mutation did not occur immediately after mnng exposure
    我們實(shí)驗(yàn)室曾用一特殊的突變檢測(cè)系統(tǒng),直接證明dna損傷劑可在哺乳動(dòng)物細(xì)胞誘發(fā)非定標(biāo)性突變:首先用低濃度( 0 . 2 m )的短壽烷化劑mnng (半壽期為1 . 1hr )處理細(xì)胞2 . 5h后,繼續(xù)培養(yǎng)24h ,將重組有用作突變檢測(cè)的靶基因supftrna基因的穿梭質(zhì)粒pz189轉(zhuǎn)入細(xì)胞復(fù)制,發(fā)現(xiàn)在未受致癌物直接攻擊的穿梭質(zhì)粒中有較自發(fā)突變率高5倍以上的靶基因突變。
  4. It's difficult to find mutation frequency in a sentence. 用mutation frequency造句挺難的

相鄰詞匯

  1. "mutation detection"造句
  2. "mutation effect"造句
  3. "mutation equilibrium"造句
  4. "mutation event"造句
  5. "mutation factor"造句
  6. "mutation gene"造句
  7. "mutation history"造句
  8. "mutation hotspot"造句
  9. "mutation load"造句
  10. "mutation map"造句
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