MakingMetaphaseSpread
Materials:Colcemid (GIBCO: cat #: 15210-040)Hypotonic solution (pre-warmed 37C): 1:1 0.4% KCl + 0.4% Sodium citrateFixative: 3:1 MeOH + Acetic acid (e.g., 15 mL MeOH + 5 mL Acetic acid)Pasteur transpipetProcedure:Grow and harvest cells:Grow cells to 85% confluenceAdd colcemid to cell culture at 10 µl/mLIncubate for 2 hours (depends on cell cycle: longer cycl......阅读全文
Making－Metaphase－Spread
Materials:Colcemid (GIBCO: cat #: 15210-040)Hypotonic solution (pre-warmed 37C): 1:1 0.4% KCl + 0.4% Sodium citrateFixative: 3:1 MeOH + Acet
Metaphase－chromosome－preparation
Materials: RPMI 1640 medium fetal calf serum (FCS), 20% Colcemid (e.g. Boehringer Mannheim cell biology reagents, Best.-Nr. 295892) cell cuture flask
uCalpain－and－friends－in－Cell－spread
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FIXATION－OF－PLANT－METAPHASE－CHROMOSOMES
Reagents (a) Metaphase arresting agents: Choose one of the following (Note 2) and shake vigorously to aerate before putting in living plant materi
Making－RNA－probes－for－in－situ－hybridization
Make DNA templates via PCRDay 1It's preferable to start with constructs that contain RNA polymerase start sites (T3, T7, or SP6) which allow use o
聚焦安全检测技术－助力实现Match－Making
2015年7月18日，由国家会议中心和雅森国际主办的“2015北京国际食品及农产品安全检测技术展览会”(China FATS Fair)在国家会议中心盛大开幕。作为国内首个以科技保障食品安全的专业展会，齐集91家行业顶尖企业参展，吸引3017名专业观众参观，展览面积达10000平方米。
CGH－Protocols－（四）
CGH Image acquisitionImages were acquired through a Zeiss Axiophot fluorescence microscope using a Plan NEOFLUAR oil objective x63, N.A. 1.25 (Zeiss,
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The preparation of a smear is required for many laboratory procedures, including the Gram-stain. The purpose of making a smear is to fix the bacteria
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Range ResolutionRange is the direction perpendicular to flight path of the aircraft. The vertical beamwidth , shown in Figure 3, is determined by the
Standard－Operating－Procedures－for－T1Phage－Testing－Assay
I. Introduction:This assay uses a lawn of phage-susceptible E. coli (DH10B) embedded in a layer of agarose. This top agarose lays on a bed of standard
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The onion root tip and the whitefish blastula remain as the standard introduction to the study of mitosis. The onion has easily observable chromosomes
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细胞遗传学——染色体
Chromosome Staining and Banding Technique (Primate Cytogenetics Network)Protocols for different staining method, each is in great detail. Karyotype A
Mapping－Protein－Distributions－on－Polytene－Chromosomes－by－Immunostaining2
12. Hold the salivary glands at the common duct with tweezers.Transfer the glands to a drop of fixing solution on a siliconizedcoverslip. 13. Incubate
Preparation－Of－Peripheral－Blood－Cells－For－Chromosome－Analysis
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欧盟发布欧洲东南部国家非洲猪瘟的风险评估
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CGH－Protocols－（一）
Metaphase chromosome preparationMaterials: RPMI 1640 medium fetal calf serum (FCS), 20% Colcemid (e.g. Boehringer Mannheim cell biology reagents, Best
Streptomyces:Protocols/Conjugation
Intergeneric Conjugation and OverlayDescription Transfer of plasmid/cosmid DNA from a host strain, e.g. E.coli ET12567 [pUZ8002], to the recipient str
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Description Transform E.coli cells with plasmid/cosmid DNA using the method of electrophoration (inserting plasmids into E.coli).Approx. Duration:Prep
细胞遗传学——比较基因组杂交(CGH)
· Comparative Genomic Hybridization (CGH) CGH is a molecular Cytogenetic method of screening a tumor for genetic changes. The alterations are
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什么是有丝分裂的中期停顿？
中文名称中期停顿英文名称metaphase arrest定 义（1）用抗有丝分裂剂，导致有丝分裂或减数分裂停止在中期的现象。（2）在一些生物中卵核常停止在减数分裂的第一次或第二次分裂的中期（或后期）直至受精才完成分裂的现象。应用学科细胞生物学（一级学科），细胞周期与细胞分裂（二级学科）
Layered－plates
General InformationThe cells being plated are sandwiched between layers of cell-free agar. The submerged cells grow into smaller colonies and many mor
单克隆抗体
· Tips and hints for the storage of antibodies (Synaptic Systems)· Purification of IgG Using Protein A- or Protein G-Agarose(KPL)·
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Transforming－chemically－competent－cells
MethodThaw TSS cells on ice.Add DNA, pipette gently to mix (1μl of prepped plasmid is more than enough).Note: If you are adding small volumes (~1μl),
细胞组分和细胞器——染色体
Chromosomal DNA Prep : cultured cells/tissue samples (Mike A Dyer)This protocol was developed for cultured cells but should be appropriate for dissoci
什么是有丝分裂？
最初称这种分裂方式为核分裂，因为在分裂过程中出现纺缍体和染色体等一系列变化，然后才出现细胞的真正分裂，所以又称为间接分裂或有丝分裂。1882年华尔瑟·弗莱明提出，还由于这种分裂方式是多细胞生物体的体细胞的分裂方式，故又称体细胞分裂。·有丝分裂是一连续的复杂动态过程，为叙述方便，根据形态学上的变化，按
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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