PCRTroubleshootingguide
1．假阴性，不出现扩增条带 PCR反应的关键环节有①模板核酸的制备，②引物的质量与特异性，③酶的质量， ④PCR循环条件。寻找原因亦应针对上述环节进行分析研究。 模板：①模板中含有杂蛋白质，②模板中含有Taq酶抑制剂，③模板中蛋白质没有消化除净，特别是染色体中的组蛋白，④在提取制备模板时丢失过多，或吸入酚。⑤模板核酸变性不彻底。在酶和引物质量好时，不出现扩增带，极有可能是标本的消化处理，模板核酸提取过程出了毛病，因而要配制有效而稳定的消化处理液，其程序亦应固定不宜随意更改。 酶失活：需更换新酶，或新旧两种酶同时使用，以分析是否因为酶的活性丧失或不够而导致假阴性。需注意的是有时PCR时忘了加Taq酶或电泳时忘了加溴化乙锭。 引物：引物质量、引物的浓度、两条引物的浓度是否对称，是PCR失败或扩增条带不理想、容易弥散的常见原因。有些批号的引物合成质量有问题，两条引物一条浓度高，一条浓度低，造成低效率的不对称扩增，对策为： ①选定一个好......阅读全文
PCR－Trouble－shooting－guide
1．假阴性，不出现扩增条带 PCR反应的关键环节有①模板核酸的制备，②引物的质量与特异性，③酶的质量， ④PCR循环条件。寻找原因亦应针对上述环节进行分析研究。 模板：①模板中含有杂蛋白质，②模板中含有Taq酶抑制剂，③模板中蛋白质没有消化除净，特别是染色体中的组蛋白，④在提取制备模板时丢失过多，或
Facts－and－trouble－shooting
10 Fun Facts for DNA Electrophoresis::Migration of DNA is retarded and band distortion can occur when too much buffer covers the gel. The slower migra
标准PCR
· What's PCR? (Michael Blaber's Lab)Illustrated introduction to usr/localious aspects of PCR technique. It's very valuable not onl
标准PCR
What's PCR? (Michael Blaber's Lab)Illustrated introduction to usr/localious aspects of PCR technique. It's very valuable not only for thos
Complete－PCR－Guide
In the polymerase chain reaction (PCR), a thermostable DNA polymerase amplifies DNA that is flanked by known sequences. The known sequences correspond
DNA转化
DNA转化Chemical Transformation· Transformation of Competent Cells (RbCl2 Method) (Goldberg Lab)Very nice protocol for E. Coli transformation inc
Degenerate－PCR,－a－short－guide.
What is degenerate PCR? Degenerate PCR is in most respect identical to ordinary PCR, but with one major difference. Instead of using specific PCR pr
基因型分析
Randomly Amplified Polymorphic DNA (RAPD)Randomly Amplified Polymorphic DNA (RAPD) by (DNA KAFFE)RAPD analysis has been successfully used in mapping
Western－杂交
Western 杂交（主要内容如下）Preparing of Protein LysatesWestern BlottingFar Western BlottingSemi Dry BlottingStripping MembranesTrouble Shooting and OthersPrepa
DNA电泳
DNA电泳（主要内容如下） Preparation of Agarose Gel and Electrophoresis Extraction of DNA From Agarose Gel Extraction of DNA from Acrylamide Gels DNA Marker
2D电泳资料合集
I. 2D电泳操作手册BIORAD英文版:http://www.people.cornell.edu/pages/ks349/2D/Biorad.pdfBIORAD中文版:http://www.people.cornell.edu/pages/ks349/2D/Biorad_ch.pdfBIORAD
蛋白质磷酸化
Tyrosine Kinase Assay Using Synthetic Peptides (T. Miller)Small synthetic peptide substrates are especially well suited for applications such as assay
PCR
PCRPolymerase Chain Reaction1) Add the following to a microfuge tube:10 ul reaction buffer1 ul 15 uM forward primer1 ul 15 uM reverse primer1 ul templ
Guide－to－Cell－Proliferation－and－Apoptosis－Methods
Chapter 1: Cell Death - Apoptosis and Necrosis1.1Introduction21.1.1Terminology of cell death21.1.2Differences between necrosis and apoptosis31.1.3Apop
PCR实验技巧5
Trouble shooting guide 1．假阴性，不出现扩增条带 PCR反应的关键环节有①模板核酸的制备，②引物的质量与特异性，③酶的质量， ④PCR循环条件。寻找原因亦应针对上述环节进行分析研究。 模板：①模板中含有杂蛋白质，②模板中含有Taq酶抑制剂，③模板中蛋白质没有消化除净，特别是染
PCR实验技巧5
Trouble shooting guide 1．假阴性，不出现扩增条带 PCR反应的关键环节有①模板核酸的制备，②引物的质量与特异性，③酶的质量， ④PCR循环条件。寻找原因亦应针对上述环节进行分析研究。 模板：①模板中含有杂蛋白质，②模板中含有Taq酶抑制剂，③模板中蛋白质没有消化除净，特别是染
A－Guide－to－CORNET－for－the－Construction－of－Coexpression－and－ProteinProtein..
To enable easy access and interpretation of heterogenous and scattered data, we have developed a user-friendly tool for data mining and integratio
BioTNT－mRNA－引物筛选，引物定制或specific－primers的使用说明2
1、 低速离心数秒，并且按照荧光PCR仪的使用说明放置好您的PCR管/条/板；2、 从下列表中选择最合适的实验反应条件，按照荧光PCR仪的使用说明设置好PCR反应条件： 荧光PCR仪 循 环 时 间
Beginners－Guide:－Validat,－Verificat－and－Monitoring－of－Inspection－Equipment
February 28, 2017 -Validation, verification and routine performance monitoring are often used interchangeably, creating confusion within organizat
免疫组织化学
· Double Peroxidase (HRP) Immunohistochemical Labeling of Trypsin-Sensitive Antigens (KPL)· Immunohistochemistry (Tyner lab)This is a
免疫细胞化学
Introduction to Immunocytochemistry (House Ear Institute)A brief overview of common available methods. BrDU Immunocytochemistry using peroxidase and
基因编辑鼠的构建－Guide－RNA设计和筛选
众所周知，CRISPR/Cas9被业内誉为“基因剪刀”，它可以高效地实现靶基因的编辑，自问世以来就备受关注和青睐。CRISPR/Cas9系统是由CRISPR相关基因和Cas9组成，Cas9核酸酶会在向导RNA（Guide RNA, gRNA）的指引下，在完整基因组上的特定位点完成切割反应，同
Cas9/guideRNA遏制“病媒”蚊子传播病毒
每当夏日将至，人们就开始陷入到被蚊子支配的恐惧之中，小小的蚊子不仅让很多人饱受皮肉之苦，还会传播疟疾、登革热、丝虫病等危害性较强的传染病。因此，别看人类处在食物链的顶层，可几十年过去了，除了杀虫剂策略，我们仍然没有什么一劳永逸的办法对付蚊子。随着CRISPR 基因编辑革命的爆发，人们开始将目光聚
细胞遗传学——原位杂交(ISH)
In Situ Hybridization· In Situ Hybridization (jsmith1@po-box.mcgill.ca)In situ hybridization, as the name suggests, is a method of localizing,
The－UnderAgarose－Migration－Assay2
F. Video Microscopy 1. The behavior of migrating cells may be filmed with an inverted microscope fitted with a CCD camera. 2. Determine the best magni
PCR实验指导与常见问题分析1
CONTENTPCR guide: a discussion of the main parameters influencing the outcome of the PCR and multiplex PCR reaction in 16 pages/sections and using ove
PCR引物
PCR Primer Design and Reaction Optimization (Molecular Biology Techniques Manual) PCR Primer Design (Newman Lab) PCR Primer Design (Eppendorf)Detail
PCR引物
PCR Primer Design and Reaction Optimization (Molecular Biology Techniques Manual) PCR Primer Design (Newman Lab) PCR Primer Design (Eppendorf)Detail
原位PCR
About in situ PCR (Applied Biosystems)Basic information about in situ PCR and its applications.The In Situ PCR: Amplification and Detection in a Cellu