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E.coli大肠杆菌染料法荧光定量PCR试剂盒(含致病性和非致病性)上海圻明生物优势供应。更多产品资料欢迎免费咨询。
One of the many important uses of PCR technology is that it can be used to label DNA probes with high specific activity. PCR technology has high specificity, and can synthesize probe DNA fragments in quantities within 1~2h if [α-32P]dNTP or other markers are added to the substrate
dNTPs, the probe DNA can be well labeled during DNA synthesis, and the incorporation rate of the marker can be as high as 70%~80%. Therefore, PCR labeling technology is particularly suitable for large-scale detection and non-radiolabeling. The disadvantage of this method is that a specific pair of PCR primers is synthesized.
Labeling can also be achieved by using small fragments prepared from probe DNA as primers.
Solution preparation
1. Prepare a stock solution
Unless otherwise stated, all unused stock solutions should be divided into disposable aliquots and stored at -20 °C after preparation. Avoid repeated freeze-thaw cycles.
1.1* Acid Stock Solution (125X):
Add 20 μL DMSO to *ate (component B) to make a 125X* acid stock solution.
2. Prepare standard solutions
*Salt standard solution
Add 50 μL of 1 mM KH2PO4 (Component C) to 950 μL of deionized water or enzyme reaction buffer to give a 50 μM * saline standard solution (PS7). A 50 μM * saline standard solution (PS7) was taken and serially diluted 1:2 to obtain a serially diluted phosphate standard with deionized water or enzyme reaction buffer.
3. Prepare a working solution
Add 20 μL of 125X* stock solution to 2.5 mL of sterile H2O and mix well to make a working solution of *salt. Avoid potential Pi contamination. Note: Avoid direct exposure of *salts (component B) to light. Due to the high sensitivity of this assay to Pi, it is extremely important to use Pi-free labware and reagents.
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文献和实验佚名 感染的免疫 凡能引起人类疾病的细菌,统称为病原菌或致病菌(Pathogenic bacterium)。细菌在人体内寄生，增殖并引起疾病的特性称为细菌的致病性或病原性(Pathogenicity)。致病性是细菌种的特征之一，具有质的概念，如鼠疫细菌引起鼠疫，结核杆菌引起结核。致病性强弱程度以毒力
网络 第六章 细菌的致病性和抗细菌感染的免疫 凡能引起人类疾病的细菌,统称为病原菌或致病菌(Pathogenic bacterium)。细菌在人体内寄生，增殖并引起疾病的特性称为细菌的致病性或病原性（Pathogenicity)。致病性是细菌种的特征之一，具有质的概念，如鼠疫细菌引起鼠疫，结核杆菌引起结核。致病性强弱程度以毒力(Virulence)表示
志贺菌属的致病性是临床检验主管技师考试的部分内容，医学教育网搜集整理相关内容供大家参考。 致病物质： 侵袭力：菌毛粘附于肠粘膜上皮细胞，诱导细胞内吞。 内毒素：破坏肠粘膜；肠壁通透性；肠壁植物神经——腹痛，腹泻，里急后重，粘液脓血便。 外毒素（志贺毒素，ST）：肠毒素活性；细胞毒活性；神经毒活性 所致疾病：细菌性痢疾，简称菌痢。 1.急性菌痢。 2.中毒性菌痢。 3.慢性菌痢。
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