查询词典 diphtheria toxin

Diphtheria is treated with an antitoxin that neutralize s the toxin and produces long-term immunity.

治疗方式为及时注射白喉抗毒素，产生长期的免疫力。

Diphtheria is treated with an antitoxin that neutralizes the toxin and produces long-term immunity.

治疗方式为及时注射白喉抗毒素，产生长期的免疫力。白喉抗毒素是异性蛋白。

Diphtheria is treated with an antitoxin that neutralizes the toxin and produces long-term immunity .

治疗方式为及时注射白喉抗毒素，产生长期的免疫力。

Essential amino acid residues in diphtheria toxin catalytic domain were determined by quantum chemistry calculation and the enzymatic activities of mutant in the active-site were tested in order to provide high effective cytotoxin for target anticancer drugs.

通过量子化学计算确定白喉毒素分子催化区活性中心的关键氨基酸残基，评价其取代后的酶活性的改变，为导向性抗癌药物研究提供高效杀伤细胞工具。

Diphtheria toxin is an exotoxin secreted by Corynebacterium diphtheriae that has been lysogenized by β bacteriophage that carries the DT gene.

白喉毒素是棒状白喉杆菌被β噬菌体感染后分泌的一种外毒素。

A simple screening test to separate susceptible from immune individuals is the injection intradermally of a suitable diluted diphtheria toxin.

一个简单的筛选试验可从免疫人群中筛选出易感者：皮内注射适量的稀释白喉毒素。

The principal purpose of this study is to set up the isolation methods for diphtheria toxin expressed by genes, to purify the toxin with complete biological activities, and to make researches on its toxicities. In the experiments, the target gene was inserted into the cloning vectors--pET22b, then the vectors were introduced into host cells -BL21(DE3). The expression of the toxin was induced by addition of IPTG. The expression products were purified by His-6 label affinity chromatography. Then the diphtheria toxin expressed was transferred to PVC membrane using semidry blotter to determine the amino acid sequence of N-terminal. The "nicked" diphtheria toxin linked by disulfide bond was gained by protease hydrolysis.

为建立重组基因表达白喉毒素的分离纯化方法，制备出具有生物活性的蛋白质毒素，构建了白喉毒素表达载体pET22b-DT，并转入大肠杆菌BL21(DE3)中诱导表达，以融合表达的His-6作为标签通过亲和层析纯化；表达毒素经蛋白酶酶切后，形成了以二硫键连接的与天然结构相同的带"缺口"的白喉毒素，并测定白喉毒素对豚鼠的急性毒性和细胞毒性。

Because diphtheria toxin-based immunotoxin has the ability of high efficiently and specifical...

综述了基于白喉毒素的免疫毒素的研制现状与应用前景

Objective: To study the effects of recombinant expression vector containing human breast cancer DF3 promotor and diphtheria toxin A fragment on human breast cancer cells.

目的：研究新构建的含人乳腺癌DF3启动子和白喉毒素A片段的重组表达载体PGL3-DF3-DTA对人乳腺癌细胞的影响。

For example,1889-1890 years, the people studies the diphtheria toxin and the tetanus infection toxins with the immunology technique, using it again later on to study the plant toxin, such as the castor toxin, the croton toxin and snake poison, spider poison within the animal toxins.

例如，1889～1890年，人们用免疫学技术研究白喉毒素和破伤风毒素，随后又用它来研究植物毒素，如蓖麻毒素、巴豆毒素和动物毒素中的蛇毒、蜘蛛毒。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。