mutation frequency造句
例句與造句
- 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 - 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。 - 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。 - It's difficult to find mutation frequency in a sentence. 用mutation frequency造句挺難的