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低温
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- 库存:
99
- 供应商:
上海圻明生物
- 规格:
50次
Human Herpesvirus 4 (HHV4,同EB) )人疱疹病毒4型 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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文献和实验这类病毒是以其代表性的即单纯疱疹病毒的名称为词首命名的。病毒体( virion)呈球状,直径为 150— 250毫微米,包膜( Envelope)中有直径 100毫微米左右的正二十面体状壳体。壳微体为 92个,核酸为双链 DNA,分子量 70— 100× 106 。在细胞核内增殖,富尔根( Feulgen)反应阳性,形成嗜依红性的 Cow- dryA型包涵体,根据这些特征,有人把它们称为核型包涵体 A( NITA)病毒类。在细胞的核膜内侧出芽。无凝集红血球的能力。在天然寄主或实验
亦称勒克肿瘤病毒。属疱疹病毒属,质粒直径为 160— 240毫微米,具有和 EB病毒相同的一部分抗原。从栖息于北美及其他地方的一种蛙( Rana pipiens)上,特别是从自然发生肿瘤的个体中于早春(水温 2— 7℃)易于分离到此病毒。尚未确定它对蛙类有致肿瘤性。在来自 Rana pipiens蛙的 ICR-RPD67.7和蛙胚的 RPE67.7等细胞株中能大量地增殖,并显有细胞变性效果。培养最适温度为 25℃。
以分泌特异性抗体的人B 淋巴细胞与瘤细胞融合而成的杂交瘤细胞所分泌的抗体称为人单克隆抗体(human McAb,HMcAb)。与MMcAb 相比,HMcAb 的优越性在于其应用于人体内不会激起明显快速的抗McAb 反应。HMcAb 在人体内的滞留时间长,并能更有效地与人体免疫系统协同发挥作用。HMcAb 的制备方法包括:人-鼠细胞杂交技术;人-人细胞杂交技术;淋巴细胞EB 病毒转化-杂交技术及基因工程等等。 HMcAb 制备的技术线路如图22
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