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上海圻明生物
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Nocardia carnea肉色诺卡菌PCR试剂盒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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文献和实验诺卡菌属细胞壁含分枝菌酸，是广泛分布于土壤中的需氧性放线菌。多数为腐物寄生性的非病原，不属于人体正常菌群，故不呈内源性感染。分为星形诺卡菌、短链诺卡菌、鼻疽诺卡菌、肉色诺卡菌、巴西诺卡菌、越橘诺卡菌、豚鼠耳炎诺卡菌、南非诺卡菌、苦味诺卡菌等9种。对人致病的主要有3种：星形诺卡菌、豚鼠诺卡菌和巴西诺卡菌。引起人类疾病 主要为星形诺卡菌和巴西诺卡菌。在我国最常见的为星形诺苄菌。 奴卡菌病多为外源性感染，可因吸入肺部或侵入创口引起化脓感染。如星形诺卡菌主要通过呼吸道进入人体引起人的原发
诺卡氏菌属（Nocardia）它又名原放线菌属，在培养基上形成典型的菌丝体医学教育|网，剧烈弯曲如树根或不弯曲，具有长菌丝。这个属的特点是在培养15小时至4天内，菌丝体产生横隔膜，分枝的菌丝体突然全部断裂成长短近于一致的杆状或球状体或带杈的杆状体。每个杆状体内至少有一个核，因些可以复制并形成新的多核的菌丝体。此属中多数种无气生菌丝，只有营养菌丝，以横隔分裂方式形成孢子。少数种在营养菌丝表面覆极薄的一层气生菌丝枝—子实体或孢子丝。孢子丝直形、个别种呈钩状或螺旋，具横隔膜。以横隔分裂形成
诺卡氏菌属的概述： 诺卡氏菌属（Nocardia）它又名原放线菌属，在培养基上形成典型的菌丝体，剧烈弯曲如树根或不弯曲，具有长菌丝。这个属的特点是在培养15小时至4天内，菌丝体产生横隔膜，分枝的菌丝体突然全部断裂成长短近于一致的杆状或球状体或带杈的杆状体。每个杆状体内至少有一个核，因些可以复制并形成新的多核的菌丝体。此属中多数种无气生菌丝，只有营养菌丝，以横隔分裂方式形成孢子。少数种在营养菌丝表面覆极薄的一层气生菌丝枝—子实体或孢子丝。孢子丝直形、个别种呈钩状或螺旋，具横隔
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