IHCProtocolforFr...
实验概要The method provides a IHC protocol for free floating brain sections.实验步骤1. Coronal 30-40 µm sections cut on a freezing microtome. Sections collected into petri dishes containing 1-2ml 0.1M phosphate buffer (PB). Sections can be kept on a shaker at 4oC for several days before commencing the immunocytochemistry. [If left too long, the sections become harder to mount].2. Deactivate endogenous peroxid......阅读全文
Direct/Indirect－Staining－Protocol
Use this Protocol for Directly or Indirectly staining cells for Flow Cytometric Analysis1) Dilute cells to 5x10^6 cells/mL2) Aliquot 100uL of cells pe
原位免疫PCR的IHC增敏方法
（一）基本原理Sano等（1992）率先利用基因工程的方法表达了A蛋白与链霉亲和素的嵌合体分子获得成功，建立了免疫PCR技术。这是一种新的抗原检测系统，利用细胞工程和基因工程技术，巧妙地将抗原抗体反应的特异性同PCR的敏感性相结合，通过构建单克隆抗体与重组核酸的嵌合体分子，使得利用PCR技术检测蛋白
IHC－增敏实验——滚动循环放大法
实验方法原理滚动式循环放大（rolling circle amplification；RCA）法是一种能够在恒温条件下，使标记有寡核苷酸探针（与组织细胞内的核苷酸无相关性）的抗体（特异性一抗或第二抗）与组织细胞内的抗原结合后，在 DNA 聚合酶的作用下，加入的寡核苷酸进行循环扩增，产生一条扩增的 D
IHC全攻略2：如何制备样品
对于每一项IHC/ICC研究，组织和细胞样本的制备都不可掉以轻心。为了方便孵育，整个组织必须被切成超薄(5-10 μm)的切片，或切成小块用于整体免疫组化(whole mount IHC)。对于ICC实验，在开始染色步骤之前，细胞必须附着在显微镜载玻片或盖玻片上。样本制备也与固定方法密切
IHC免疫组化常见问题分析
分析一下免疫组化实验中一些常见的问题和解决措施： 常见问题一：所有切片呈阴性 原因分析：a.缓冲液内含叠氮化钠，抑制酶的活性； b.染色未完全按照操作步骤进行； c.漏加一种抗体或抗体失活； d.复染或脱水剂使用不当； e.底物中加入的过氧化氢少或失活。
IHC全攻略3：固定剂的选择
IHC/ICC实验中使用的所有样本必须经过固定，以维持组织形态，并保留目的分子的抗原性。固定改变了组织的化学组成，因此往往需要在维持组织结构和保留表位之间进行折衷。细胞或组织的不完全固定(固定不足)可能造成组织内目的蛋白的快速水解，并降低了特异的免疫反应性。然而，过度的固定(固定过度)可能导致表
IHC全攻略6：抗原修复方法
尽管固定对于组织形态的保留是必不可少的，但这一过程对IHC/ICC检测也有不良影响。固定可能会改变蛋白的生化特性，如目的表位被掩盖，或不再与一抗结合。表位的掩盖可能是由氨基酸与表位的交联、表位附近无关肽段的交联、表位构象的改变或抗原静电荷的改变引起的。抗原修复指的是逆转表位掩盖和恢复表位-抗体结
Thawing－Cells－(Schreibers－protocol)
Thaw vial quickly in 37癈 water. Caution - vial can explode.Transfer cells to sterile, 15 mL centrifuge tube.Add 50 祃 warm FBS (fetal bovine serum, hea
Co－IP－Protocol4
工作液配制：配制100ml的modified RIPA buffe：1. 称取790mg 的Tris-Base，加到75ml 去离子水中，加入900mg的NaCl，搅拌，直到全部溶解，用HCl调节PH值到7.42. 加10 ml 10%的NP-403. 加2.5 ml 10%的去氧胆酸钠，搅拌，直到
Methylene－Blue－DNA－staining－protocol
Methylene Blue DNA staining protocolProtocol:Load 2-5X the amount of DNA that would give bands of moderate intensity on an ethidium bromide stained ge
Co－IP－Protocol1
一 原理：IP是利用抗原蛋白质和抗体的特异性结合以及细菌蛋白质的“prorein A"特异性地结合到免疫球蛋白的FC片段的现象活用开发出来的方法。目前多用精制的prorein A预先结合固化在argarose的beads上，使之与含有抗原的溶液及抗体反应后，beads上的prorein A就能吸附抗
Western－Blot－Protocol实验步骤
一、提取抗原蛋白 将提取RNA途中留存的样品，加入150μl100%酒精充分混匀，静置5min(RT),2000×g,4℃离心5min,吸取上清至新管中,加入750μl异丙醇,混匀,静置10min(RT),12000×g,4℃离心10min,弃上清,加入1ml0.3mol/L盐酸胍/95%酒精重悬
Northern－protocol(RULES－FOR－RNA－WORK)
1. Wear gloves at all time including filling pipet tip in racks, filling jars with Eppendorf tubes, and weighing chemicals to prepare solution
Marcantonio－Lab－Protocol－Manual——2
Quantitation of DNADetection of Nucleic Acids Using Absorption Spectroscopy The absorption of the sample can be measured at several different waveleng
Co－IP－Protocol2
Protocol1 调制protein A sapharoseprotein A sapharose 5ml 溶于20ml含0.02%NaN3的PBS离心2000转2分，去上清，在沉淀加0.02%NaN3的PBS，离心后去上清，重复2次，最后沉淀加20ml含0.02%NaN3的PBS，冷藏保存用单抗
Protocol－for－evaluating－vascular－permeability－in－wildtype
1) Female Tiel-PR Tg mice and wildtype control litter-mates aged 6-9 wks wereovariectimized and allowed to recover for 7-10 days.Making estrogen and p
Cell－Thawing/Cell－Freezing－Protocol
Freezing Cells:Cells should be growing well or known to be in log phaseCount, collect and pellet cells in a 15mL test tubeResuspend in freezing media
Experimental－Protocol－for－cDNA－Library－Construction
Experimental Protocol for cDNA Library ConstructionIdentify appropriate celltype over-expressing corresponding gene.Find out if transcription can be s
SYBR－Green－Quantitative－PCR－Protocol
SummaryQuantitative PCR is a method used to detect relative or absolute gene expression level. All qPCR involves the use of fluorescence to detect the
Blocking－With－Immunizing－Peptide－(BL)－Protocol
实验概要Non-specific binding of an antibody to proteins other than the antigen can sometimes occur. This is usually more common with polyclonal antibodi
Marcantonio－Lab－Protocol－Manual——3
Sequencing GelPreparing and Running a Sequencing Gel (6% Polyacrylamide/Urea) A. Preparation of Gel Solution 1) Weigh out 50 g of Urea into a clean 25
Bench－Top－Radioactive－Work－Protocol
Log in radioactive material received and deduct amount of radioactive material used in each experiment in Radioisotope Log Book.Clear your bench top w
SSR－GEL－and－Silver－Staining－Protocol
I. EQUIPMENT:DNA sequencing unit (35 x 45 cm) & 2000V power supplyClampsLg. plastic trays (4), about 43 x 50 x 8 cm, and one lidTwo rocking platformsH
琼脂糖电泳protocol
试剂: 试样20μl DNA ladder 琼脂糖 TAE缓冲液 上样缓冲液含0.5μg/ml EB的电泳缓冲液50×TAE贮存液: Tris 242g冰乙酸 57.1ml0.5mol/LEDTA(pH
流式胞内染色protocol
一、surface marker染色1、收获细胞，0.5-1x10e6/tube，用FACS Buffer 2ml洗涤一次，倾倒后滤纸吸干管口液体。2、加入预先配置好的你需要染的surface marker的抗体混合液（即CD3，CD4，CD8抗体mixture），充分混匀，室温下孵育20分钟。3、
Single－tube－confirmation－PCR－protocol
The following colony PCR protocol has been designed to be performed in individual reaction tubes. We usually test three colonies from each transformat
Protocol－for－Trichloroacetic－Acid－(TCA)－Precipitation
IntroductionThe efficiency of nucleotide incorporation in DNA/RNA polymerization reactions (e.g. transcription, reverse transcription, and DNA replica
Co－IP－Protocol3
免疫共沉淀技术路线准备工作：预冷PBS，RIPA Buffer，细胞刮子（用保鲜膜包好后，埋冰下），离心机1. 用预冷的PBS洗涤细胞两次，最后一次吸干PBS；2. 加入预冷的RIPA Buffer(1ml/107个细胞、10cm培养皿或150cm2培养瓶，0.5ml/5×106个细胞、6cm培养皿
HP－Tissue－DNA－Midi－Protocol
实验概要The E.Z.N.A.® HP Tissue DNA Midi Kit is designed for efficient recovery of genomic DNA up to 60 kb in size from up to 500mg of tissue samples.
Cell－Thawing/Cell－Freezing－Protocol
Freezing Cells:Cells should be growing well or known to be in log phaseCount, collect and pellet cells in a 15mL test tubeResuspend in freezing media