UseofSemiThinCryosectionsforLightMicroscopy.
Use of Semi-Thin Cryosections for Light Microscopy.Semi-thin sections can be obtained from frozen blocks of cryoprotected biological material by sectioning at -90°C. The advantages for using these sections for light microscopy are that the subcellullar morphology is preserved and the optical resolution is improved. Chemically fixed biological material is cryoprotected by immersion in 2.3 M sucrose and frozen onto spe......阅读全文
Use－of－SemiThin－Cryosections－for－Light－Microscopy.
Use of Semi-Thin Cryosections for Light Microscopy.Semi-thin sections can be obtained from frozen blocks of cryoprotected biological material by secti
USE－OF－THE－LIGHT－MICROSCOPE
USE OF THE LIGHT MICROSCOPEEach time the microscope is to be used it should be set up correctly to give a good image. Most often users forget to adjus
Silver－Enhancement－...
实验概要The method provides a silver enhancement protocol for immunoassay.主要试剂Prepare the following reagents fresh daily except for the citrate buffer.1.
Light－Microscopy
The light microscope, so called because it employs visible light to detect small objects, is probably the most well-known and well-used research tool
Measurement－with－the－Light－Microscope
Measurement with the Light MicroscopeYour microscope may be equipped with a scale (called a reticule) that is built into one eyepiece. The reticule ca
Use－of－a－Hemacytometer
A hemacytometer (also spelled hemocytometer) is an etched glass chamber with raised sides that will hold a quartz coverslip exactly 0.1 mm above the c
Use－of－Micropipets
A. Gilson-style Pipetmen Micropipets (and similar models)We primarily use the Gilson micropipets in the core course labs. We have four sizes identifie
胚胎和成年斑马鱼眼情的组织学准备
INTRODUCTIONThis protocol describes the histological preparation of embryonic and adult zebrafish eyes. The methods described here can be easily adapt
The－Effects－of－Ultraviolet－Light－on－the－Fertilization
Jill K. Flemming, Franklin & Marshall College, Class of 2001IntroductionThe objective of this project is to observe the effects of UV radiation on bot
USE－诱变实验
实验材料 带 mutS 表型（例如 BMH71-18) 的转化用大肠杆菌感受态 带 mut+表型的转化用大肠杆菌感受态 试剂、试剂盒
USE－诱变实验
实验材料 带 mutS 表型（例如BMH71-18) 的转化用大肠杆菌感受态带 mut+表型的转化用大肠杆菌感受态试剂、试剂盒 退火缓冲液贮存液合成缓冲液噬菌体 T4DNA 连接酶噬菌体 T4DNA 聚合酶或测序酶单一位点的限制性内切核酸酶琼脂糖凝胶诱变引物选择引物质粒 DNA仪器、耗材 70°C
USE－诱变实验
本方法中，两条寡核苷酸引物杂交到变性重组质粒 DNA 双链的同一条链上。一条引物（诱变引物）携带一个拟引进靶 DNA 序列的突变，第二条引物携带一个能破坏质粒单一限制酶位点的突变。本实验来源于分子克隆实验指南（第三版）下册，作者：〔美〕J. 萨姆布鲁克 D.W. 拉塞尔。实验材料带 mutS 表型（
Zebrafish－whole－mou...
实验概要Whole mount staining of Zebrafish embryos, now commonly used, requires extra steps to fix and permeabilize to ensure the egg membrane is perme
Use－of－Transmission－Electron－Microscopy
Use of Transmission Electron MicroscopyOverviewA protocol describing the use of Zeiss EM9-S transmission electron microscopy is presented. MaterialZe
Use－of－the－GUS－Reporter－Gene
One of the most important considerations in the expression of heterologous proteins in plants is the choice of promoter. The study of promoter act
CREATION－AND－USE－OF－YOUR－INFECTIOUS－VECTOR
实验概要CREATION AND USE OF YOUR INFECTIOUS VECTOR实验步骤Day 1 1. Plate 5 x 105 293T cells in 6 cm2 dishes containing 5 mL of media. (This can be scal
Use－an－IgG－antiIgM...
实验概要This method involves coupling an IgG anti-IgM antibody to protein A or G beads (see method below). These beads can then be used in the normal
Creation－and－Use－of－Infectious－Virus－Vector
Creation and use of your infectious vector:Plate 5 x 105 293T cells in 6 cm2 dishes containing 5 ml of media. (This can be scaled up if desired).The f
Guidelines－for－the－Use－of－Analgesics－and－Tranquilizers－in－Laboratory－Animal
What is Anesthesia? Anesthesia is a state of unconsciousness induced in an animal. The three components of anesthesia are analgesia (pain relief), amn
HOW－TO－USE－THE－COULTER－COUNTER－TO－COUNT－CELLS
1) Turn on the counter by pulling out the on/off button. You need to do this at least 10 min before use to obtain sufficient vacuum.Usually put 0.2 ml
Chick－or－Mouse－embr...
实验概要The following procedure describes the procedure for whole mount staining of chick or mouse embryo’s. A similar procedure could be used for sta
Setup－and－use－of－a－twolaser－multiphoton－microscope
Setup and use of a two-laser multiphoton microscope for multichannel intravital fluorescence imagingDavid Entenberg,1 Jeffrey Wyckoff,1 Bojana Gligori
General－Laboratory－Procedures,－Equipment－Use,－and－Safety－Considerations
A. Storage .The following properties of reagents and conditions are important considerations in processing and storing DNA and RNA. Heavy metals promo
Basic－Theory－and－Use－of－GCMS（一）
BASIC THEORY AND USE OF GC-MSbyDr. Eugenia SobolevaContent1. Introduction.2. GC-MS systems and components.3. Vacuum system3.1. Rotary pump3.2. Di
Use－of－the－Bradford－Protein－Assay－in－a－Microtiter－Plate－Format
Introduction The Bradford protein assay is a simple procedure for determination of protein concentrations in solutions that depends upon the change in
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,
梅特勒托利多LabX－Light－滴定软件
LabX Light 滴定软件产品详细说明 描述仪器控制功能：滴定仪控制在线曲线、测量值、一阶导数和结果直接控制滴定仪的辅助功能：搅拌、馈液、样品转换器的转动、电位测量每次分析后自动打印结果（用户可自定义内容）自动将结果导出到本地或网络硬盘（用户可自定义内容）
杂散光(Stray－light－)对吸光度的影响
一、杂散光的重要性杂散光是紫外可见分光光度计非常重要的关键技术指标。它是紫外可见分光光度计分析误差的主要来源, 它直接限制被分析测试样品浓度的上限。当一台紫外可见分光光度计的杂散光一定时, 被分析的试样浓度越大, 其分析误差就越大。ASTM 认为: “杂散光可能是光谱测量中主要误差的来源。尤
可见光检测器－visible－light－detector
可见光检测器 visible light detector 又称分光光度检测器，是基于溶质分子吸收可见光的原理设计的检测器。能够直接采用可见光检测的溶质不是很多，而且多数灵敏度也不高，但采用具有高摩尔吸光系数的有机试剂（配位体和螯合剂）作为衍生化试剂进行柱前或柱后衍生操作的衍生化光度检测法是相当
Spectrophotometry
A spectrophotometer or colorimeter makes use of the transmission of light through a solution to determine the concentration of a solute within the sol