质粒

The cotyledonal petiole segments from rapeseed variety Yangyou 4 were infected and transformed by A. tumefaciens strain LBA4404/pCAMBIA1301::hrf2, and transgenic rape plants were obtained by screening with hygromycin.

由根癌农杆菌LBA4404介导，将重组表达质粒pCAMBIA1301：：hrf2转化甘蓝型油菜杨油4号子叶节，获得了抗潮霉素的再生转基因油菜植株。

Through SDS-PAGE and Western blot, the two proteins were detected to be expressed successfully in the form of cytoryctes.

阳性重组质粒转化宿主菌TB1，用IPTG进行诱导表达，对表达产物进行SDS-PAGE检测和免疫印迹分析。

Objective Establishment of a hybridoma cell line secreting a monoclonal antibody to facilitate iˉdentification of human tissue kallikrein（KLK1gene,hK1protein）.Methods Mice were immunized with E.coli-exˉpressed GST-hK1fusion protein and their spleen cells were fused with SP2/0myeloblastoma cells.

目的 将人组织激肽释放酶（基因命名为KLK1，酶命名为hK1）cDNA克隆入大肠杆菌表达质粒，以重组菌表达的GST-hK1融合蛋白免疫小鼠，获得了分泌hK1特异单克隆抗体的杂交瘤细胞株。

Ten transformants and 10 conjugons showed high-level resistance against aminoglycoside antibiotics,all of which the value of MIC＞256μg/mL carried armA gene.Conclusions:The Ab clinical isolates from burn ward in Gansu Province People\'s hospital have high drug-resistance.16S rRNA methylases gene exsist in Ab and locate in plasmid chromosome.They are easily disseminative,which demonstrated a very high level of resistance to various aminoglycosides.

甘肃省人民医院烧伤病房鲍氏不动杆菌临床分离株有非常高的耐药率，16S rRNA甲基化酶基因armA在鲍氏不动杆菌中存在，且位于质粒染色体上，易于传播和扩散，导致所有氨基糖苷类抗菌药物高水平耐药。

In this research work, the technology of microbial conversion was studied in order to establish an environment friendly method for the production of doxorubicin. A doxA gene encoding Daunorubicin C-14 hydroxylase was cloned from a daunorubicin-producing strain Streptomyces coeruleorubidus SIPI 1482. Some plasmids for the expression of doxA gene were constructed and transformed into S.

本研究对微生物转化法替代现有工艺生产阿霉素进行了探索，从柔红霉素产生菌天蓝淡红链霉菌SIPI 1482中克隆了柔红霉素C-14羟化酶基因，构建了doxA基因的链霉菌表达质粒，导入变铅青链霉菌TK24中获得了柔红霉素转化基因工程菌，并研究了doxA基因在工程菌中的表达，最后还对工程菌转化柔红霉素生成阿霉素的发酵工艺进行了初步研究。

Five plasmids for the expression of doxA gene, which were designated as pYG57, pYG502, pYG503, pYG505 and pYG506 were constructed so that the cloned doxA gene were under the control of either promoter of melanin gene or erythromycin resistant gene or their tandem promoters, and a fd terminator downstream.

构建了五个doxA基因链霉菌表达质粒pYG57、pYG502、pYG503、pYG505和pYG506，使得doxA基因在上游的Pmel启动子、红霉素抗性基因启动子或者两者的串联启动子，以及下游的fd终止子控制之下。

Key words: Eimeria acervulina;3-1E gene;eukaryotic expression plasmid;immune protection

堆形艾美球虫；3-1E基因；真核表达质粒；免疫保护

Methods The promoter of hTERT and Cox-2 was subcloned from human genomic DNA, then ligated to shuttle vector pd306 which contains the Ela and Elb gene of adenovirus to control the expression of Ela and Elb,respectively.

将hTERT和Cox-2启动子从人类白细胞基因组中亚克隆出来，并将启动子分别插入到腺病毒穿梭载体pd306上的E1A和E1B基因前，使hTERT和Cox-2启动子分别调控腺病毒必须基因E1A和E1B的表达，再将构建后的pd306和腺病毒的骨架质粒BHGE3在Ad293细胞内进行同源重组，并用重组后的病毒感染Hela细胞检测病毒对肿瘤细胞的杀伤力。

The plasmid DNA bands were detected clearly by agarose-EtBr gel electrophore sis.Two forms of plasmid DNA molecules,namely covalently closed circular DNA mol e-cules and open circular DNA molecules,were observed under electron microscope.

用琼脂糖-溴化乙锭凝胶电泳分析在两株菌的DNA中鉴别出明显的质粒带，用电镜方法在两株菌的DNA制剂中均观察到共价闭合超螺旋和开放型环状两种构型的DNA分子。

METHODS: To construct recombinant expression plasmid subtype H1 of SIV HA gene of A/Swine/Guangdong/LM/2004(H1N1).BALB/c mice of 6-8 weeks old were immunized endemically with the recombinant plasmid.The splenocytes from the immunized mice were fused with Sp2/0 myeloma cells after the last immunization.

构建 H1 亚型猪流感病毒A/Swine/Guangdong/LM/2004(H1N1)HA基因表达质粒，基因免疫6～8周龄雌性BALB/c小鼠，加强免疫后取其脾细胞与骨髓瘤细胞 Sp2/0进行融合。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！