COLONYHYBRIDIZATION
COLONY HYBRIDIZATION1) CUT 4 PIECES OF 3MM WHATMAN PAPER AND PLACE EACH ONE IN A SEPARATE CONTAINER(A CAFETERIA TRAY WILL PROBABLY WORK PERFECTLY).2) SATURATE EACH OF THE 4 PIECES WITH ONE OF THE FOLLOWING SOLUTIONS:A) 10% SDSB) Denaturing Solution (.5N NaOH, 1.5M NaCl)C) Neutralizing solution (1.5M NaCl,.5M Tris pH 7.4)D) 2X SSC** DO NOT ALLOW THE FILTERS TO BECOME TOO WET BECAUSE THE COLONIES WILL SWELL AND DIFFUSE......阅读全文
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DNA克隆
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夹心杂交法可用滤膜和小珠固定吸附探针，使用小珠可更好地进行标准化试验和更容易对小量样品进行操作。Dahlen 等利用微孔板进行夹心杂交，可同时进行大量样品检测，他们先吸取DNA探针加到凹板中，然后用紫外线照射使其固定到塑料板上。用微孔板进行夹心杂交还可直接用于PCR技术。应用光敏生物标记探针
原位杂交(In－Situ－Hybridization,ISH)与荧光原位杂交（二）
5．洗膜 取出塑料袋，用剪刀剪开，小心取出滤膜，立即浸入盛有2×SSC和 0.5%SDS溶液的盘中，室温下漂洗5min。再将滤膜移入2×SSC和0.1%SDS溶液中，室温下洗涤15min（轻轻摇动）。然后将滤膜移入 0.1×SSC和0.5%SDS溶液中；68℃轻轻摇动保温2h，更换缓冲液后继
原位杂交(In－Situ－Hybridization,ISH)与荧光原位杂交（一）
是用标记的核酸探针，使用非放射检测系统或放射自显影系统，在组织切片、细胞涂片及染色体制片上等对核酸进行定性、定位和相对定量研究的一种分子生物学方法，具有灵敏、特异、直观等优点。已逐渐成为分子生物学和分子病理学的常见技术之一，广泛应用于肿瘤生物学、血液病理学、遗传、微生物学、细胞和分子生物学、神经内分
原位杂交(In－Situ－Hybridization,ISH)与荧光原位杂交（五）
⑦60伏电泳过夜。 ⑧取出凝胶，水中浸泡2次，每次5min。 ⑨室温下将胶浸到50mmol/L NaOH和10mmol/l NaCl中45min，水解高分子RNA，以增强转印。 ⑩室温下将胶浸到0.1mol/L Tris·HCl (Ph7.5)中45min，使胶中和。
原位杂交(In－Situ－Hybridization,ISH)与荧光原位杂交（三）
（1）DAN斑点杂交①先将膜在水中浸湿，再放到15×SSC中。②将DNA样品溶于水或TE，煮沸5min，冰中速冷。③用铅笔在滤膜上标好位置，将DNA点样于膜上。每个样品一般点50μl（2～10μg DNA）。④将膜烘干，密封保存备用。（2）RNA斑点杂交：与上法类似，每个样品至多加10μg总RNA（
原位杂交(In－Situ－Hybridization,ISH)与荧光原位杂交（四）
（2）硝酸纤维素滤膜吸印。①将胶切成合适大小，切去右上角作为记号。②将胶放进盛有变性缓冲液（1.5mol/l NaCl, 0.5mol/L NaOH）的盘中轻摇动15min。③换到中和缓冲液（1mol/L Tris·HCl , pH8.0, 1.5mol/L NaCl）中轻摇动30min。④裁一张硝
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We have developed a method for isolating high quality total RNA from N. crassa mycelia that reliably yields large quantities. It is possible to extrac
cDNA－LIBRARY－SCREENING
PREPARE SOLUTIONS1. 10mM MgSO4, 0.2% Maltose LB (100 mL):Mix 1.0 g of Bacto-Tryptone, 1.0 g of NaCl, 0.5 g of Yeast Extract, and 1.0 mL of 1M MgSO4. A
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In Situ Hybridization· In Situ Hybridization (jsmith1@po-box.mcgill.ca)In situ hybridization, as the name suggests, is a method of localizing,
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Preparation of nucleic acid probesIn standard nucleic acid hybridization assays the probe is labeled in some way. Nucleic acid probes may be made as s
Ligation－Optimization
The following protocol can be used to optimize ligation conditions for difficult to clone (e.g. very large) fragments. The principle is to independent
General－Cloning－Protocols
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Introduction The most important aspect of our cloning vectors is that they are based on the E. coli F-factor replicon. It allows for strict
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3. Methods3.1 RNA Probe Preparation1. Different strategies can be used to prepare template DNA for synthesizing antisense RNA probes by in vitro tr
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Plasmid (pUC series) containing genomic DNA fragments are maintained in E. coli strain DH5aTM. The E. coli cultures are routinely cultured at 37 C on
酵母人工染色体
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Multicolour－3DFISH－in－vertebrate－cells5
Author NotesAfter the fourth round of DOP amplification the probe quality is considerably reduced.Use the low stringency cycles only in case you start
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第一天 (restriction enzyme digestion)1.取待測的genomic DNA，用二次水稀釋10倍(30μl的DNA 加270μlddH2O→ 300μl)2.換算genomic DNA濃度(OD260)，再換算取10μg所需的體積。3.取10μg DNA，用限制酵素EcoR