CentrifugationTheory
Centrifugation is a process used to separate or concentrate materials suspended in a liquid medium. The theoretical basis of this technique is the effect of gravity on particles (including macromolecules) in suspension. Two particles of different masses will settle in a tube at different rates in response to gravity. Centrifugal force (measured as xg, gravity) is used to increase this settling rate in an instrum......阅读全文
Lyophilizing－Cells
Lyophilizing CellsInoculate 200 ml L-broth supplemented with appropriate antibiotics with the bacteria to be lyophilized.Incubate the culture at 37°C
Lyophilizing－Cells
Inoculate 200 ml L-broth supplemented with appropriate antibiotics with the bacteria to be lyophilized.Incubate the culture at 37°C with vigorous shak
DNA纯化手册2
Key points to observe: a. Use a endA1- E. coli strain for plasmid propagation and isolation whenever possible. The instability of plasmids isolated fr
DNA提取中EB的去除实验方法
Removal of Ethidium Bromide from DNA by Extraction with Organic SolventsJoseph SambrookPeter Maccallum Cancer Institute and The University of Melbourn
Maxiprep－preparation－of－Plasmid－DNA
实验概要The PureLink™ HiPure Plasmid DNA Maxiprep Kit allows purification of 500–850 μg of high-quality plasmid DNA from 100–200 mL overnight E. coli cu
细胞结构成分的离心分离技术1
就像可以把细胞从组织中分离出来进行研究一样，人们也可以把细胞器从细胞中分离纯化出来，以研究它们各自特有的的化学组成、酶活性和代谢特点。尽管在一个世纪前就有人试图分离细胞器，但直到20世纪40年代有了超速离心机和细胞匀浆技术后，才真正建立了细胞器的分离技术。用这一技术可以获得相对纯净的各种细胞器和大分
巨噬细胞和单核白细胞
· Lymphocyte Transformation (Donis-Keller lab)Lymphocytes are transformed to establish cell lines. Mononuclear cells (lymphocytes) from antico
Thawing－－Incubating－Human－－Animal－Liver－Microsomes
实验概要BackgroundThe liver is the major organ for metabolism of endogenous substrates as well as exogenous drugs. There are several in vitro tools avai
密度梯度离心基础知识（五）
序数符号表示为： ①细胞核 ②质膜 ③细胞质 ④细胞核 ⑤线粒体 ⑥溶酶体 ⑦线粒体 ⑧溶酶体 ⑨内质纲 ⑩病毒(1)细胞核 (2)质膜 (3)细胞质 (4)细胞核 (5)线粒体 (6)溶酶体 (7)线粒体 (8)溶酶体 (9)内质网(10）病毒 (11)核蛋白体 (12)核糖体 (13)D
Isolation－of－peripheral－blood－mononuclear－cells－(PBMC)
1. Acid-citrate dextrose-treated blood (450 ml) was obtained from donors. 2. PBMC were isolated by centrifugation over lymphocyte separation medium. 3
重组DNA的分离、克隆与测序实验手册8
B. Midiprep double-stranded DNA isolationA midi-prep double-stranded DNA isolation has been developed to generate a sufficient amount of template DNA
E.Z.N.A.™－Fastfilter－Plasmid－Mega－Protocol
实验概要The E.Z.N.A.™ family of products is an innovative system that radically simplifies extraction and purification of nucleic acids from a variety
BAC－DNA分离方法－Isolation－of－BAC－DNA－from－Largescale－Cultures
Isolation of BAC DNA from Large-scale CulturesJoseph SambrookPeter Maccallum Cancer Institute and The University of Melbourne, AustraliaDavid W. Russe
Probiotic－Attributes－of－Lactic－Acid－Bacteria－Isolates
IntroductionPresently the consumption of probiotic food is highly popular worldwide for their health beneficial effects. Commonly used probiotic bacte
Erythrophagocytosis
OUTLINEThe erythrophagocytosis assay is performed to compare the phagocytic rate with and without anti-eythrocyte antibody in either macrophages from
Separation－of－Platelets－from－Whole－Blood
PurposeThis protocol describes how to isolate human platelets from whole blood. Isolated platelets are used for static adhesion assays, for flow chamb
Preparation－of－tubulin2
DAY 2: Cycling preparation of MT protein.Keep the brains in an evacuated plastic ziplock bag buried in ice from the time of slaughter during transport
Preparation－of－human－platelets
Preparation of human platelets 1. Human blood was taken from drug-free volunteers on the day of the experiment using acidic citrate dextrose
Midiprep－preparation－of－Plasmid－DNA
实验概要The PureLink™ HiPure Plasmid DNA Midiprep Kit allows purification of 100–350 μg of high-quality plasmid DNA from 15–25 mL overnight E. coli cul
速率区带离心法－|你的分离纯化方法选对了吗？
密度梯度离心（isodensity centrifugation method）又称为区带离心。该方法的优点是可以同时使样品中几种或全部组分分离，具有良好的分辨率，分离效果好，可一次获得较纯组分。缺点是离心时间较长，需制备梯度液，操作要求高。按照离心分离原理，密度梯度离心又可分为速率区带离心法（ra
面对顽固性肝硬化腹水，我们怎么办？
顽固性肝硬化腹水是指肝硬化患者的腹水对大剂量利尿剂治疗1周以上无反应，或放腹水联合白蛋白治疗2周以上腹水仍大量存在的一种病理状态。患者可表现为高度腹胀、腹痛，极度消瘦（如恶液质），有时出现呼吸喘憋，尿量减少，腹外疝等。 正确治疗顽固性腹水对缓解患者的症状，降低并发症，提高生存率是非常重要的。顽
Subculture－of－Suspension－Cell－Lines
AimIn general terms cultures derived from blood (e.g. lymphocytes) grow in suspension. Cells may grow as single cells or in clumps (e.g. EBV transform
Extraction－of－DNA－using－DNAzol®－Reagent
实验概要DNAzol® Reagent (Genomic DNA Isolation Reagent) is a complete and ready-to-use reagent for the isolation of genomic DNA from solid and liquid sa
细胞组分和细胞器——细胞膜
Isoelectric Focussing of Membrane Protein by Slab Gel Method (Hancock Lab) Isolation of Outer Membrane Protein from P.Aeruginosa with Octyl-Poe (Hanc
Protocols－for－the－preparation－of－tumour－cells－for－s.c.－injections－in－mice
For the establishment of solid tumour in nude mice, tumour cells are treated in a sterile environment under a cell culturing hood. Disposable sterile
Protocols－for－the－preparation－of－tumour－cells－for－s.c.－injections－in－mice
For the establishment of solid tumour in nude mice, tumour cells are treated in a sterile environment under a cell culturing hood. Disposable sterile
RNA－Isolation－Protocol
Stabilize RNAStart with 15 ml E. coli Culture containing 7.5* 109 cells (OD600= 0.2 Dilute cells or scale up)Pipet 30 ml of RNAProtect Bacteria Reagen
细胞膜蛋白质提取方法
NRC Institute for Biological SciencesTriton X-114 extraction protocol (Hydrophobic protein preparation)Ressuspend cells in Solution A (dil 1/8) and ad
离心机5000转/10分钟会使细胞破碎吗
建议读下”Evaluation of Centrifugation Technique and Effect of Epinephrine on Fat Cell Viability in Autologous Fat Injection”这篇文献，最好不要超过5000RPM，一般来讲1000RPM
RNA－Isolation－Protocol
RNA Isolation Protocol(Revised 5-15-2003)Stabilize RNAStart with 15 ml E. coli Culture containing 7.5* 109 cells (OD600= 0.2 Dilute cells or scale up)