大肠杆菌

The fungicidal activity of methanol extract was higher than that of ethylacetate extract. The bioassay showed that the methanol extracts of strain As fermentation products had certain degree fungicidical activity against Botrytis cinerea, Alternaria longipes, Glomerella cingulata, Curvulavia lunata, Gibberella zeae, Valsa malt under the concentration of 4000μg/mL, the inhibiting ratio against pathogen growth was ranging from 62.9%~85.1%; The results of the inhibition of spore germination indicated that the fermentation products exhibited obvious inhibition rate against Alternaria longipes, the EC50 values was 62.5328μg/mL; The bioassay showed that the methanol extracts of strain As fermentation products had certain degree fungicidical activity against Bacillus cereus , Bacillus subtilis.

其中甲醇提取物的抑菌活性较乙酸乙酯好，在4000μg/mL浓度下对番茄灰霉病菌、烟草赤星病菌、苹果炭疽病菌、玉米弯孢叫斑病菌、小麦赤霉病菌、苹果腐烂病菌6种植物病原真菌均有抑制作用，抑制率在62.9%~85.1%；抑制孢子萌发试验表明：菌丝体甲醇提取物对烟草赤星病菌的毒力较好，其EC50仅为62.5328μg/mL；抑制细菌活性表明菌丝体甲醇提取物对蜡状芽孢杆菌和枯草芽孢杆菌有一定的抑制作用，而对大肠杆菌无明显的抑制作用。

It could apparently inhibit the growth of Escherichia coli and Helminthosporium turcicum Pass with the eight tested bacteria and plant pathogeny fungi by testing filter paper wafer.

用滤纸圆片法检测，BOL在测试的8种菌中对大肠杆菌和玉米大斑病菌的生长有抑制作用。

Objective To explore the risk factors of nosocomial hematosepsis caused by extended spectrum β-lactamases positive E.

目的探讨急性白血病并发超广谱β-内酰胺酶阳性大肠杆菌败血症的相关因素及护理。

Coli in patients with acute leukemia after chemotherapy and related nursing. Methods 11 acute leukemia inpatients with hematosepsis caused by ESBLs positive E.

方法回顾分析11例急性白血病并发ESBLs阳性大肠杆菌败血症患者抗生素使用情况、药敏结果、中性粒细胞计数及转归。

Hemoclastic Escherichia coli was the reason of this disease. And surroundings sanitation, feedingstuff, management, microelement, stress factors were main inducing factors.

结论］溶血性大肠杆菌是引发猪水肿病的病原，环境卫生、饲料、管理、微量元素、应激因素等是该病的主要诱发因素。

93 Target gene were detected by Tem-PCR from 75 specimen, they were: Hemophilus influenzae 40, Streptococcus penumoniae 36, Acinetobacter baumannii 10, Pseudomonas aeruginosa 4, Staphylococcus aureus 3, the other 9 kinds of bacterium including Escherichia coli、Klebsiella pneumoniae and Enterobactor cloacae were not detected by Tem-PCR, the positive rate of Tem-PCR was 39.9%(75/188).(3) For the 14 kinds of bacterium designed by Tem-PCR, compared with the culture, the sensitivity、specificity and coincidence of Tem-PCR is 51.0%, 68.0%, 58.3% respectively.

2经Tem-PCR技术扩增后，188例标本在Luminex100多功能悬浮点阵仪中有75例呈阳性，共检测出93株病原菌的靶基因，分别是流感嗜血杆菌40株，肺炎链球菌36株，鲍曼氏不动杆菌10株，铜绿假单胞菌4株，金黄色葡萄球菌3株，另外9种Tem-PCR已设计的细菌包括肺炎克雷伯菌、大肠杆菌、阴沟肠杆菌等均未检出，Tem-PCR的阳性率是39.9%(75/188)。

Methods From Feb 2006 to Jun 2006,188 hospitalized children in Shenzhen children s hospital, were collected deep tracheal aspirate at the time of hospitalization. The respiratory tract secretions were immediately sent for bacterial culture with 3 kinds of medium:ordinary medium, Hemophilus influenzae selective medium, Streptococcus penumoniae selective medium. Then we extracted the total nucleic acids from secretions, and detected Mycoplasma pneumoniae by single fluorescent quantitation PCR. Simultaneously, 14 respiratory tract pathogenic bacterium and Mycoplasma pneumoniae were detected by Target Enriched multiplex PCR. Amplification products were identified by the Luminex100 suspension array.

确诊为社区获得性肺炎的患儿188例，在入院当天采集深部呼吸道吸引物，用普通培养基和肺炎链球菌、流感嗜血杆菌选择性培养基进行细菌培养，然后提取深部呼吸道吸引物中病原体的DNA，采用荧光定量单PCR的方法检测肺炎支原体，并对同一标本采用靶序列富集多重PCR技术同时扩增肺炎链球菌、流感嗜血杆菌、金黄色葡萄球菌、肺炎克雷伯菌、大肠杆菌、嗜肺军团菌、铜绿假单胞菌、鲍曼氏不动杆菌、脑膜炎奈瑟氏菌、阴沟肠杆菌、奇异变形杆菌、化脓链球菌、粪肠球菌及屎肠球菌14种呼吸道病原菌和肺炎支原体的靶基因，扩增产物用Luminex100多功能悬浮点阵仪检测。

After the NK gene from recombinant plasmid pUC19-NK was cloned on expression vector pBV220, it was transformed into host cell E. coli HB101. Recombinant plasmid pBV220-NK was extracted for identifying by analysis of restriction enzymes, PCR and sequencing. Studies on recombinant strain's growth and expression showed that heterogene have no distinct effect on host cell. The recombinant plasmid have excellent segregational stability but low structural stability. The results of kinetics of pBV220-NK expression in E.

将重组质粒pUC19-NK上的纳豆激酶基因成功克隆到表达载体pBV220上，并将之转入大肠杆菌HB101中，得到转纳豆激酶基因工程菌，提取重组质粒经单酶切、双酶切及PCR分析验证后，对重组菌的生长及表达进行一系列研究，结果表明：外源纳豆激酶基因的导入对宿主的生长没有明显的影响：重组质粒的稳定性实验表明：该质粒具有良好的分离稳定性，而结构稳定性较差。

There is a new option to construct E.coli strain for efficient expression of heterologous proteins.

为改造大肠杆菌，提高外源蛋白的功能性表达作了初步的探索。

Many heterologous proteins, including gene engineering antibodies, are prone to form the insoluble ...

许多外源蛋白，包括基因工程抗体，在大肠杆菌中单独表达时都以不可溶的包涵体形式存在。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。