Description
Formerly RNA Extraction Control 560.
RNA Extraction Control not only enables users of a diagnostic qPCR assay to determine if there are inhibitors in the PCR assay, but also to validate the success of the extraction step, reducing the chance of obtaining a false negative result in the sample RNA.Product Highlights
- Simple – streamlined protocol for straightforward validation of RNA extraction and determination of RT-qPCR assay inhibition
- Sensitive – control assay identifies even small effects on RNA extraction and inhibition of amplification
- Optimized - control RNA has a sequence with no known homology to any organism thereby avoiding detection of sample RNA
- Specific – probe-based assay designed specifically for the REC control sequence
- Flexible – ideal for use with a wide range of sample types, including inhibitor-rich samples like blood, urine and sputum samples
Product Description
A common practice in qPCR is to add a known amount of spiked control RNA after RNA extraction, this monitors PCR inhibition but has no value as an extraction control. The ideal situation is to have the test sample and internal control undergo the same processing prior to qPCR. Meridian has developed a RT-qPCR Extraction Control, which more closely mimics the test sample, as compared to spike controls. Genetic material from the test sample and the RT-qPCR Extraction Control is simultaneously extracted by common extraction methods, with the extraction control being as sensitive to inhibition and extraction failure as the test sample.
Artificial RT-qPCR Extraction Control cells are of a known concentration, containing the Internal Control RNA sequence. This sequence contains no known homology to any organism and, importantly, has minimal interference with detection of sample RNA. The RT-qPCR Extraction Control cells are spiked into the lysis buffer with the target sample, prior to RNA extraction. Control Mix, which primers and probe, is then added to the reaction mix before amplification. Signal derived from the Internal Control RNA confirms the success of the extraction step. RT-qPCR Extraction Control also monitors co-purification of PCR inhibitors that may cause biased or false amplification patterns.
Applications
- Pathogen detection
- Cancer risk assessment
- Gene expression analysis
- Drug therapy efficacy
- Biomarker validation
- Copy number variation (CNV) analysis
- Genotyping
- Viral loading

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其次,察看次目的蛋白的存在形式,有没有多聚体形式及变构形式;
最后,查看多家抗体公司的DATA,看看别人的WB做出来的条带的位置。
根据你说的,特异识别多个组织中的同样大小的条带,我觉得很可能就是你的目的蛋白。
一般来说多克隆的阳性率高一些,但出现假阳性的比例也高一些。
1取组织
(1) 灌注固定:暴露心脏,将注射针头插入左心室,剪开右心耳,快速灌注PBS,待右心耳处流出澄清液体,换4%多聚甲醛灌注到大鼠四肢强直为止,快速取脑和肾。
(2) 固定:将组织置于4%多聚甲醛中固定15小时
(3) 脱水:将组织放入30% 蔗糖溶液中直至下沉
(4) 切片:脑组织冰冻切片20微米,37度烘干2h以上;
(5)将切片放置-80度保存,随用随取。
2免疫单标记
(1)做抗原修复(0.4g柠檬酸、3g柠檬酸钠、1000ml水配制成溶液,放到水浴箱中90~94℃保存15min),冷却后, 用1*PBS反复洗标本10min,吸去PBS,同时向标本加渗透液(配0.4%trition液,然后将BSA加入到配好的trition液中,配成1%浓度)100ul,常温下湿盒反应1h。
(2) 吸去渗透液,同时向标本加block液(5%封闭用正常山羊血清)100ul,常温下湿盒反应5h。
(3) 吸去block液,同时向标本加入1:50稀释的羊抗鼠一抗100ul,37度湿盒反应过夜。
(4)吸去一抗,并回收,用1*PBS洗液反复洗15min。
(5)快速从冰箱中取出驴抗羊的二抗,并立即用锡纸包裹,注入到一个新的以锡纸包裹的tube管中并用PBS以1:200稀释。
(6)进入暗室,吸去PBS,同时加入二抗100ul,37度湿盒反应2h,封片。
(7)放置到荧光显微镜下观察。
又由于自然存在的抗原大都存在多个抗原表位,会刺激机体产生多种针对同一抗原的不同抗原表位相应的不同抗体.

