細菌突變 的英文怎麼說
中文拼音 [xìjūntūbiàn]
細菌突變
英文
bacterial mutation- 細 : 形容詞1 (條狀物橫剖面小) thin; slender 2 (顆粒小) in small particles; fine 3 (音量小) thin ...
- 菌 : 菌名詞1. (蕈) mushroom2. (姓氏) a surname
- 突 : Ⅰ動詞1 (猛沖) dash forward; shoot out 2 (高於周圍) protrude; bulgeⅡ副詞(突然) abruptly; sud...
- 細菌 : germ; bacterium (pl. bacteria); fungus (pl. fungi)
- 突變 : 1 (突然急劇的變化) sudden change; change suddenly; transilience; accident; saltation; revulsion...
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The bacilliform cell penetrate into interior of the fibre to degrade the cellulose strongly and produced a mass of sticky polysaccharides. after cultured 48 hours, the bacilliform cell ' s surface of sporocytophaga have a great change. at this stage the bacilliform produce a lot of sticky polysaccharides. these sticky polysaccharides associated with the sites where the filter paper was decomposed intensively and form thorns on the surface of the bacillium. at the same time, the filter - paper weight loss is the greatest and decomposing rate is the fastest, so we think that the sticky polysaccharides are produced during the cellulose degradation
培養48小時,桿狀細胞的表面結構發生很大的變化,此時的菌體表面已產生大量的粘性多糖,這些粘性多糖因菌體在纖維素表面滑動而在菌體表面形成突起,即在纖維素被旺盛降解部位的菌體表面產生了大量突起;而產生突起的菌體深入到纖維素分子內部,纖維素表面可以清晰地看到由於菌體嵌入纖維素分子內部而留下的凹陷。The aglycone, steviol, exhibited greater acute toxicity than stevioside in hamsters but not in rats. steviol was clearly genotoxic after metabolic activation, inducing forward mutations in bacteria and gene mutations and chromosomal aberrations in lung fibroblasts of chinese hamsters
甜菊醇經過代謝活化后,基因毒性明顯,可引致細菌產生正向突變,以及使中國倉鼠的肺纖維原細胞產生基因突變和染色體變異。The strategy of bacterial genetic mutation and its application
細菌基因突變的策略及應用An ser - to - ala substitution at position 94 was detected in 2 isolates showing low level isoniazid resistant, an ile - to - thr substitution at posotion 21 was found in 2 isolates showing high level isoniazid resistant, and small deletion was identified in 1 isolates showing high level isoniazid resistant
94位氨基酸突變的2株細菌低度耐藥, 21位氨基酸突變的2株細菌高度耐藥,堿基缺失的細菌高度耐藥。 43株異煙肼敏感株中沒有檢測到inha基因突變。Objectie. to inestigate the claim of culpability of bacteria in causing the local inflammatory process seen in patients with disc herniation and radiculopathy
目的.評估一種關于細菌培養可能性的說法。這種說法認為,這種通過引起椎間盤突出和影像學改變病人局部炎癥反應的細菌可以被培養出來。A few mutants were found on the plate containing nitrobenzene selective medium. their colony appearances have some difference from the wild strain. some evidences show that their growth characteristics on the selective medium are related to the plasmids harbored in their cells
對菌株的自發突變株的研究表明,這些菌株在硝基苯選擇培養基上的生長特性是與它們細胞中所含質粒的特性相關的。Dna and rna dot blotting revealed that the f gene was transcribed into mrna in the vero cells. there was expression of the f protein as shown by indirect immunofluorescent assay. the expression began at 48h post - infection and increased thereafter, as indicated by elisa
將真核表達質粒pcdna3 - f高壓電轉化dam和phop基因雙突變的減毒鼠傷寒沙門氏菌zj111株( zj111 / pcdan3 - f ) ,並直接轉染vero細胞,分別提取細胞總dna和總rna , dig標記探針均可檢測到陽性雜交信號。Over - expression of yggg retarded the cell cycle, on the point after dna partition, resulting in accumulation of diploid as bacteria stop division and sequentially went to death. this appearance is similar to that of the era mutants, including the partially defective in era gtpase activity or the reduced in the synthesis of wild - type era which bacteria become arrested in the cycle at the predivisional two - cell stage
在熒光顯微鏡下細菌形態的變化,以及dapi染色和透射電子顯微鏡觀察, yggg的表達與era突變(使era功能降低時)對細菌分裂的影響有類似之處,即細菌dna合成,子代dna分離后;分裂停滯,形成細菌繁殖受阻時, 2 - 4倍體的出現。As iron bacteria have been paid more attention, their application has changed greatly
摘要隨著人們對鐵細菌認識的突破,其應用也發生了巨大的變化。For example, as a direct toxic effect, periodontal iruses and bacteria and their products ( endotoxins or enzymes, for example ) are toxic to surrounding cells and may directly induce mutations in tumor suppressor genes and proto - oncogenes or alter signaling pathways that affect cell proliferation or surial of epithelial cells
例如,作為直接毒性作用,牙周病毒和細菌及在細胞周圍其產生的毒性物質(例如,類毒素或酶類)可直接誘導腫瘤抑制基因和原癌基因突變或者改變細胞信號傳導通路從而影響上皮細胞增殖或存活。For example, as a direct toxic effect, periodontal viruses and bacteria and their products ( endotoxins or enzymes, for example ) are toxic to surrounding cells and may directly induce mutations in tumor suppressor genes and proto - oncogenes or alter signaling pathways that affect cell proliferation or survival of epithelial cells
例如,作為直接毒性作用,牙周病毒和細菌及在細胞周圍其產生的毒性物質(例如,類毒素或酶類)可直接誘導腫瘤抑制基因和原癌基因突變或者改變細胞信號傳導通路從而影響上皮細胞增殖或存活。On the contrary, biology has catalogued many traits produced by point mutations ( changes at precise positions in an organism ' s dna ) ? bacterial resistance to antibiotics, for example
實情恰恰相反。在生物的dna上,某個特定位址發生的變化叫作點突變。生物學家已經發現許多點突變製造的性狀,例如細菌對抗生素的耐受本領。Bacterial mutagenicity test
細菌致突變試驗An optimizing medium was obtained via orthogonal experiment. the optimized concentration : cornsteep 2g / l, corn starch 90g / l and soybean cakepowder 10g / l
發酵培養基優化后使突變株zi38的阿細菌素產量達到了4200ug ml左右。分享友人