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In order to develop antibacterial peptide biologics for prevention and control of endometritis of dairy cow,a pair of primers was designed and synthesized according to the sequence of bovine antibacterial peptide gene published in GenBank.The total RNA was purified from the dairy cow endometrial cells with the Total RNA Isolation Kit.

为研发防治乳牛子宫内膜炎的抗菌肽生物制剂,根据已发表的牛抗菌肽基因序列设计了1对引物,用试剂盒提取乳牛新鲜子宫内膜总RNA,经RT-PCR扩增,将克隆的抗菌肽BNBD5基因全长编码区的cDNA连接到原核表达载体pET30a中,经IPTG诱导原核表达,通过Western-blot检测融合蛋白BNBD5的表达水平。

Holland is the country with the most complete bicycle transportation system, with 22,000 kilometers of bike lanes, equalling ten times the length of its freeway. Eighty percent of Dutch citizens own more than one bicycle. In addition, bicycle sharing schemes are available in cities like Paris, London, Barcelona and Copenhagen. These schemes allow residents to use public bicycles at a low price or even for free.

荷兰是脚踏车交通系统最完善的国家,脚踏车车道全长22,000公里,是高速公路的10倍;高达八成的荷兰人,拥有一辆以上的脚踏车;此外,公用脚踏车计画也在许多城市施行,包括巴黎,伦敦,巴塞隆纳和哥本哈根,民众可以低价甚至免费去使用公共脚踏车。

They all contain 13 protein coding gene,2 rRNA gene,22 tRNA gene and 1 D-Loop.The base composition for the four nucleotides is A-32.0%,C-27.6%,G-14.7%,T-25.8%,And it is A-32.5%,C-26.9%,G-14.1%,T-26.5%for Yellow-throated Marten.But there are some definite differences in base composition,the using of Initiation codon and Stop codon,and the mode of repeat sequences in control region.The codon usages of Manes have bias,and the ttiird locations of codon of protein-coding genes have the higher frequency in using A and C.There may be some relativity with the content of A and C in D-loop,namely,it has relation with the mode of repeat sequences.The complete mitochondrial genome of the Sable and Yellow-throated Marten were submitted to GenBank,and the accession number are FJ429093 and FJ719367 respectively.3、The complete mitochondrial genome of 6 other species of Mustelidae from GenBank and some sequences of D-loop from the 6 species were aligned.

分析紫貂大兴安岭亚种、长白山亚种、阿尔泰亚种和北欧亚种间的基因流及进化历史得知:大兴安岭种群与新疆种群和长白山种群间的基因流水平最高(Nm=0.1260和0.1427),新疆与长白山种群间最低Nm=0.0053紫貂种群在进化过程中可能发生过种群膨胀,经历过种群增长过程。2、对紫貂和黄喉貂的线粒体全基因组结构进行分析发现:全长分别为16 523bp和16549bp,均包含13个蛋白质编码基因、2个rRNA基因、22个tRNA基因和1个非编码序列区(D-Loop区,紫貂全序列中碱基组成为A-32.0%,C-27.6%,G-14.7%,T-25.8%,黄喉貂为A-32.5%,C-26.9%,G-14.1%,T-26.5%;基因排列顺序与日本貂和貂熊的一致,但碱基组成、起始密码子和终止密码子的使用及控制区中串联重复序列模式等均存在一定差异。

In contrast,the expression levels of Lb est2 in nymphal stages are lower than that in adult stage.2 Gene cloning of AChE and mRNA expression level in L.entomophila2.1 Gene cloning and sequence analysis of AChE in L.entomophilaTwo full length cDNA encoding AChE were cloned from L.entomophila by the methods of RT-PCR and RACE,named Le ace1(GenBank Accession No.:EU854149) and Le ace2GenBank Accession No.

CarE基因在不同发育阶段mRNA表达量的分析结果表明,Lb est1的表达量随着该虫生长发育的进行逐渐降低,至成虫期时表达水平最低;相反,L6 est2在若虫期表达水平较低,而在成虫期表达水平最高。2嗜虫书虱乙酰胆碱酯酶基因克隆及其mRNA表达水平研究2.1嗜虫书虱乙酰胆碱酯酶基因克隆及序列分析利用RT-PCR和RACE技术成功克隆获得嗜虫书虱2个AChE基在的全长序列,分别命名为Le ace1(GenBank登录号:EU854149)和Le ace2(GenBank登录号:EU854150)。

The comparison between the GuHMGR1 genomic sequence with the cDNA of Pisum sativum showed that the genomic DNA contained two introns.The lengths of three exons were 1206 bp,181 bp and 943 bp,respectively.

GuHMGR1基因在DNA水平上由3个外显子和2个内含子组成;GuHMGR1的cDNA全长为2330bp,其中包括1518bp的开放阅读框、311bp的5'非翻译区和501bp的3'非翻译区。

The open reading frame of cDNA is of 603 bp, which encodes GH precursor consisted of 200 amino acid residues. Sequence alignment indicates that the average value of sequence homology approaches to 92.4% among 7 species of siluriforms catfish, the highest is 95.8% between Silurus, meridicnalis and S. asotus, lowest is 89.4% between C. lazera and S. asotus.

克隆的革胡子鲶GH cDNA开放阅读框全长603bp,编码由200个氨基酸残基组成的生长激素前体。5个科7种鲶形目鱼类GH基因序列同源比较结果表明,7种鲶形目鱼类间GH基因序列的同源性很高,平均为92.4%,大口鲶和鲶之间的同源性最高,为98.5%,革胡子鲶和鲶之间的同源性最低,为89.4%。

The efficiency of selection was monitored by comparing the number of phage recovered from the acid elution and cell lysate in each round,and by testing EGFR binding specificity of polyclonal phagescFv on CHOEGFRGFP1 and CHOK1 cell with cell ELISA. Bacterial PCR was used to select clones containing a 1 kb insert. Cell ELISA was used to determine EGFR binding specificity of monoclonal pscFv on EGFR positive and negative cell. The number of individual EGFRbinding clones was determined with nucleotide sequencing. Results 500fold enrichments were observed by tittering phages in the cell lysate after five rounds of selection.

以稳定转染的CHOEGFRGFP1细胞和未转染的CHOK1细胞分别作为EGFR阳性和阴性细胞,采用负筛选的方法进行筛选;通过比较每轮投入及洗脱出噬菌体的效价比以及细胞ELISA检测多克隆pscFv与阳性、阴性细胞结合情况对筛选过程进行监测;采用菌落PCR挑选含有全长scFv片断的菌落,进一步用细胞ELISA检测单克隆pscFv与EGFR阳性及阴性细胞结合特异性;挑选EGFR特异性单克隆pscFv采用DNA测序法确定克隆多样性。

Cell ELISA was used to determine EGFR binding specificity of monoclonal pscFv on EGFR positive and negative cell. The number of individual EGFRbinding clones was determined with nucleotide sequencing. Results 500fold enrichments were observed by tittering phages in the cell lysate after five rounds of selection.

以稳定转染的CHOEGFRGFP1细胞和未转染的CHOK1细胞分别作为EGFR阳性和阴性细胞,采用负筛选的方法进行筛选;通过比较每轮投入及洗脱出噬菌体的效价比以及细胞ELISA检测多克隆pscFv与阳性、阴性细胞结合情况对筛选过程进行监测;采用菌落PCR挑选含有全长scFv片断的菌落,进一步用细胞ELISA检测单克隆pscFv与EGFR阳性及阴性细胞结合特异性;挑选EGFR特异性单克隆pscFv采用DNA测序法确定克隆多样性。

To investigate the mechanism of wood formation and lignin biosynthesis, it is important to understand the function and characteristic of OMT. In the present study, a set of primer was designed based on the conserved region of OMT genes from several woody and non-woody plants, to clone the counter part gene by PCR and RACE from Chamaecvparis formosensis Matsum., Chamaeeyparis obtusa var. Jormosana, Abies kawakarnii, Tsuga ehinensis var. Jormosana and Taiwania eryptonierioide Hayata. The cloned genes were sequenced and their amino acid sequences predicted.

我们自资料库中收集并分析已发表之草本和木本植物caffeoyl CoA3-O-methyltransferase序列,在具高保守性的序列中设计了一对引子,并对红桧、台湾扁柏、台湾冷杉、台湾铁杉和台湾杉进行OMT基因的钓取,同时配合RACE的策略,成功获得红桧、台湾扁柏、台湾杉的全长基因及台湾冷杉与台湾铁杉之部分基因片段。

The output of the experiments demonstrated that we could only validate partial new genes of our predictions, mainly because that it was very difficult to obtain fresh human tissue samples especially those from human brain, and most of our samples were partially depredated at the time we got them

然而由于超大基因大都在脑组织中表达且拷贝数低,再加上因伦理等原因难以取得较为新鲜的人类组织样品,最终只能利用RT-PCR的方法验证了一些新基因的部分片段,证明了它们在组织中表达存在,但暂未能得到新超大基因的全长cDNA。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力