Highresolutionnegativestaining
High resolution negative staining(From Valentine et al, 1968. Biochemistry 7:2143-52)Rationale: For the highest resolution with negative staining, there should be little or no support film, but some support is necessary to hold the protein. In this method the proteins are supported by a carbon film and "embedded" in a film of uranyl acetate. The film is cast on mica, which provides the cleanest possibl......阅读全文
Histone－blotting－pr...
实验概要The method provides a procedure and tips for detecting histone proteins.The protocol refers to the western blot detection of histone proteins d
Basic－Theory－and－Use－of－GCMS（二）
For ionisation to take place at all, chemical reaction between the sample and the reagent gas must be exothermic. The grater the heat of the reaction,
Preparation－and－Staining－of－Frozen－Tissue－Sections
I. Preparation of Frozen Sections for SectioningMaterials neeed:2-methylbutane (isopentane)Liquid NitrogenDry icePeel-Away?/sup> base moldsFrozen tiss
Immunofluorescent－Staining－of－Mouse－and－Rat－Leukocytes
I. ProcedureHarvest cells from tissue, preparing a single cell suspension. Red blood cells may be removed by lysis or density gradient: Red blood cell
Cell－Surface－Immunofluorescence－Staining－Protocol
实验概要A method of identifying and enumerating specific cell types in a heterogeneous population of cells by enhancing the specific staining of desired
Immunofluorescent－staining－of－Sea－Urchin－embryos
1. Transfer fixed embryos to microfuge tubes. Allow to settle for 10 minutes.Gently remove most of the liquid.2. Add 100 ul antibody to one tube and 1
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
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
Intracellular－Immunofluorescent－Staining－for－Flow－Cytometry
IntroductionA modification of the basic immunofluorescent staining and flow cytometric analysis protocol can be used for the simultaneous analysis of
Microscopy－with－Oil－Immersion
Microscopy with Oil ImmersionPrincipleWhen light passes from a material of one refractive index to material of another, as from glass to air or from a
Downregulated－of－MTA3－in－ERnegative－Breast－Tumors
Approximately 30% of breast carcinomas lack ER expression. Presumably, these breast cancers become estrogen independent through genetic alterations th
Application－Note:－Qdot®－Nanocrystal－Conjugates－in－Flow－Cytometry
实验概要Researchers today are trying to maximize the information that they get out of flow cytometry experiments by looking at more parameters in a sing
Human－B－cell－isolation－and－culture
实验概要This protocol provides a general protocol for human B cell isolation and culture.实验步骤B cell isolation1. Donor blood was obtained with informed con
Immunohistochemistry
实验概要The following procedure describes the application of peroxidase or alkaline phosphatase conjugates in the immunohistochemical labeling of forma
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
Size－and－Shape－of－Protein－Molecules5
Hydrodynamic Analysis and EM Applied to Large Multisubunit ComplexesThe text box above showed the application of the Siegel–Monte analysis to SMC prot
Size－and－Shape－of－Protein－Molecules5
Hydrodynamic Analysis and EM Applied to Large Multisubunit ComplexesThe text box above showed the application of the Siegel–Monte analysis to SMC prot
高分辨磁式质谱仪在环境领域的应用报告题录案例（下）
应用案例三：多环芳烃仪器方法：Injector: Split/splitless, 1 min, 320℃ , 1.5 μLinjection volume with Merlin sealCarrier gas: He, 0.
Immunofluorescent－Staining－of－Drosophila－Larval－Brain－Tissue
实验概要The Drosophila larval brain is a well-established model for investigating the role of stem cells in development. Neuroblasts (neural stem cells)
FIXATION－and－DNA－Staining－for－Cell－Cycle－Analysis
BackgroundThis method of DNA staining utilizes ethanol to fix the cells and permeabilize the membrane, which allows the dye (Propidium Iodide) to ente
Cell－Cycle－Staining－ProtocolDAPI
1. Harvest cells- wash 2X in PBS to get rid of serum proteins. 1200rpm, 5 min2. Resuspend pellet (up to 3x106 cells) in 1.2 ml PBS (Ca and Mg free).3.
Immunofluorescent－Staining－of－Drosophila－Larval－Brain－Tissue
INTRODUCTIONThe Drosophila larval brain is a well-established model for investigating the role of stem cells in development. Neuroblasts (neural stem
Preparation－of－fixed－embryos－for－immunocytochemistry－and－AP－staining
1. Transfer 50 ml of embryo cultures to centrifuge tubes. Spin at 1500 rpm for 5 minutes. Check that you can see a pellet of embryos at the bottom.Qui
细菌的芽孢染色(spore－staining)
实验原理细菌的芽胞具有厚而致密的壁，透性低，不易着色，若用一般染色法只能使菌体着色而芽胞不着色（芽孢呈无色透明状）。芽孢染色法就是根据芽孢既难以染色而一旦染上色后又难以脱色这一特点而设计的。所有的芽孢染色法都基于同一个原则：除了用着色力强的染料外，还需要加热，以促进芽孢着色。当染芽孢时，菌体也会着色
免疫细胞表面抗原分子CD家族对照表(CD1CD247)3
CD7Membrane glycoprotein and Fc receptor for IgM Homologous to TCR gamma, Ig kappaMembrane expression early during T ontogeny, before TCR rearrangemen
Human－B－cell－isolation－and－culture
B cell isolation1. Donor blood was obtained with informed consent under guidelines issued by the Medical Ethics Committee. 2. Mononuclear cell fractio
Methylation－Specific－PCR
Methylation Specific PCRProtocol written by James Herman*Methylation Specific PCR (MSP) is a simple rapid and inexpensive method to determine the meth
CD表面抗原标志物功能149
Primary referencestop American Journal of Clinical Pathology (AJCP), August 1975 to February 2006American Journal of Surgical Pathology (AJSP), March
多个序列突变的筛查HRMA（四）
替代凝胶电泳 标准是使用琼脂糖凝胶电泳和EB着色。通过片段的长度、纯度和条带的荧光量确定片段。HRMA是一种很有优势的技术；通过熔解图、存在其它熔解图的纯度（没有额外的熔解峰）和产生的大量荧光信号（图6）。使用HRMA的优势很明显；不需要灌胶、使用危险化学药品（EB），熔解比电泳速度快，数
安捷伦－Resolution－ctDx－FIRST－获FDA批准，可用于肺癌液体活检
2022 年 12 月 19 日，北京——安捷伦科技公司（纽约证交所：A）近日宣布，美国食品药品监督管理局 (FDA) 已批准安捷伦 Resolution ctDx FIRST 作为伴随诊断 (CDx) 用于确定携带KRAS G12C 基因突变的晚期非小细胞肺癌 (NSCLC) 患者，这些患者可能从