exogenous dna 中文意思是什麼
exogenous dna
解釋
外原性脫氧核糖核酸-
Distribution of exogenous dna in upland cotton by pollen tube pathway
在棉花胚珠內的分佈 -
The env protein deduced from env gene encodes the hydrophilic surface protein ( su ) and the hydrophobic transmembrane domain ( tm ) that determine the specific interaction between virus particles and cell surface receptors during retroviral entry. the su of retroviruses is a highly variable genetic element, containing receptor binding sites and major antigenic determinants. exjsrv - specific dna probes were derived. by using these dna probes in tissue hybridization. we successfully identified jsrv mrna expression and proviruses dna in sheep lung tissues infected with jsrv and control group has no postive signals, validating the use of exogenous virus - specific dna probes in the analysis of oncogenic proviral integration sites and identification of integrated exogenous proviral sequences
用地高辛隨機引物法標記exjsrv特異的env片段，制備探針，原位雜交檢測spa肺組織中的rna及前病毒dna ，結果表明spa患羊肺組織內有jsrvenv基因mrna的表達，同時也檢測到了前病毒dna ，而相應的陰性對照卻無陽性信號，證實外源性病毒特異的dna探針在致瘤性前病毒的整合位點和整合的外源性前病毒的檢測中具有可信度。 -
Different amount of copies in different tissues attribute to the different density of positive signals. the result of the experiment suggested that the transgenic animals can be produced by spermatozoa - mediated gene transfer after the entrapment of liposome. and because the exogenous dna occurs losing the segments. partly integration, or existin g outside of genome dna, the rate of chimerism is relatively high
結果表明： （ 1 ）脂質體包裹外源基因轉染精子的方法，可將外源基因導入受精卵中，能夠獲得轉基因動物，並得到了較高的轉基因陽性率； （ 2 ）精子攜帶的外源dna的整合過程是隨機的，在受精過程和胚胎早期分化過程中可能發生了片段丟失、不完全整合或游離于基因組存在而產生嵌合體。 -
It is possible that exogenous dna fragment integerated into acceptor genome, changing gene base sequence or base deletion or base insertion, inducing to mutant at gene level
這可能是外源dna片段整合進受體的基因組中，改變基因的順序或者引起基因堿基的缺失、插入，從而在基因水平上發生突變。 -
To some degree, the inheritance and segregation of variant traits had a link with genetic relation between exogenous dna donor and receipt
轉化當代和後代產生了許多變異個體，變異性狀的遺傳與轉化當代外源dna供體的親緣關系有一定的相關性。 -
Green fluorescent protein has several good characters. under excitation of long uv light or blue light, it emits green fluorescence without requiring any exogenous substrates and cofactors. gfp gene expression can be used to monitor gene expression and protein localization in living cells and organisms. this is a development of revolutionary significance. the dna sequence of this gene can be re - engineered by mutagenesis and the gfp will get improved fluorescent properties. the applications of gfp will be wider and wider
綠色熒光蛋白具有優良的特性，在藍光或長紫外光的激發下，不需要任何外源底物或內源輔助因子的參入就能發出綠色熒光.綠色熒光蛋白基因的表達可用來監控活細胞或生物體中基因表達和蛋白質的定位.這是一個革命性的進展.而且，對基因dna序列的改造有可能使綠色熒光蛋白的發光特性更加優良，從而其應用范圍會更加廣泛 -
It was suggested that exogenous dna fragments ( mainly non - coding sequence ) had new mutagenetic mechanism as well as insertional mutagenesis. in t1 and t2, a number of mutants were obtained
對這種現象的分析表明，外源全dna片段（主要是非編碼序列）對轉化受體除了插入誘變的作用外，還可能存在一種新的誘變機制。 -
Analyses on the hereditary stability of protein content and quality variation in barley seeds by introducing exogenous soybean dna
導入引起大麥籽粒蛋白含量及氨基酸含量變異的遺傳穩定性分析 -
First, the fact that the phenotypic variation in t1 mainly resulted from transformation of exogenous dna rather than ion beam mutagenesis was verified by rapd - pcr amplification to mutants, exogenous dna - transferred plants and ion beam - implanted plants. second, an absent band, marked by sieg - isso, was found in the rapd - pct amplification to t - 6 and its progenies, which meant that the corresponding mutation was hereditary. this mutation was located between exon 1791 - 2691 and exonl - 395 of abc - transporter gene
T - 6和其t2代植株的rapd - pcr擴增結果中均存在缺失條帶s _ （ 168 - 1850 ， ）表明該缺失條帶對應的變異是可以遺傳的，該變異發生在abc鄭州大學博士論文摘要介即sporter基因exon1791一2691和exonl一395之間。 -
Finally, the variant line tc243 - 2, was analyzed by rapd - pcr amplification with 100 random primers. the results suggested that phenotypic variation came from exogenous dna transformation rather than exogenous pollen contamination. a mutation corre
用100條隨機引物對tc243一株系的rapd一pcr擴增結果表明該株系的變異不是來自外源花粉的污染，同時發現了特異條帶5270 _ 1600對應的變異在tz一ts代能連續穩定遺傳。 -
We concluded that excessive expression of exogenous htr gene may compete with the endogenous telomerase rna and prevent rna template from combining with telomeric dna, thus repressing the elongation of telomeric dna ( telomeres ) and causing cell aging and cell death. - 6 - 3. some modifications have been made to overcome the limitation of conventional telomeric repeat amplification protocol ( trap ) assay
分析其原因，可能是htr基因的過表達在數量和空間效應上同細胞內的端粒酶rna組分產生竟爭，一定程度上阻礙了端粒酶rna模板區與端粒dna的結合，從而抑制端粒dna的延伸，導致細胞凋亡。 -
Advances of exogenous dna injection to plant and its applications in crop breeding
導入植物技術的發展及其在作物育種中的應用 -
It has also been demonstrated that sos response dependent accumulation of mutation during replication of dna that has not been attacked by exogenous dna damaging factors can be seen in challenged cells, termed as sos untargeted mutation
而在出現sos反應的細胞中還觀察到了在復制過程中的產生的、發生在沒有外源損傷dna上的突變事件，被稱為sos非定標性突變。 -
Study on hydroxybenzene substance from exogenous dna transformation via ar ion beam
轉化彩棉中酚類物質的研究 -
The results of seed gliadin electrophoresis showed that there were difference in zymotype between lu22 and t220x, which verified that the injection of exogenous dna influenced the component of gliadin
種子醇溶蛋白電泳結果顯示，變異體t220x酶帶與受體魯麥22號相比，既有新的酶帶增加，也有酶帶缺失的情況。 -
These results indicated that it is practicable inducing exogenous dna into wheat through pollen tube pathway to obtain taget plant. there are great potential power to improve wheat quality by this way
本實驗結果表明：利用花粉管通道法將外源dna導入小麥中獲得目的性狀的植株，從而改良小麥品質，在實踐上是可行的，在生產中具有極大的潛力。 -
Using a set of primers shared by endogenous and exogenous alvs ( a > b > c, d, e ), gp85 gene was amplified by polymerase chain reaction ( pcr ) from dna extracted from common cef and exogenous alv positive samples
根據已經發表在ncbi的alv - a 、 b 、 e亞群的序列情況，分析多態性酶切位點，運用不同的限制酶bgl ， bamh ， ssp進行分型。 -
These studies demonstrates that not only we could make transgenic mouse embryo with high efficiency by the method of icsi, but also the fresh sperm from cauda epididymis or freeze - thawed dead sperm pre - mixed with exogenous dna had the full development potential to develop into term
本實驗充分表明， icsi精子載體法可以比較高地製造小鼠轉基因胚胎，小鼠附睪新鮮精子及無抗凍劑保護冷凍致死精子都具有足夠的全程發育潛力。
分享友人