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Fractionation of Golgi, ER, TGN and Other Membrane Compartments in Pre-Formed Iodixanol Gradients - http://www.axis-shield.com/densityhome/optiprep/S37.pdf

Category: Cell Organelle Protocols: Subcellular Fractionation Protocols: Membrane Isolation Protocols

The protocol described in this protocol has been used principally for analyzing the Golgi, endoplasmic reticulum and trans-Golgi network but markers for other compartments (e.g. ERGIC and endosomes) have also been analyzed. Modifications either to the gradient density range or the centrifugation conditions influence the ability of the gradient to resolve multiple compartments. - [Read Fractionation of Golgi, ER, TGN and Other Membrane Compartments in Pre-Formed Iodixanol Gradients]

Protocol for Trans-Well Migration Assay - http://www.natureprotocols.com/2006/08/07/transwell_migration_assay.php

Category: Cell Biology and Cell Culture: In Vitro Reconstitution Protocols

Protocol includes procedure for Transwell in vitro migration assays. - [Read Protocol for Trans-Well Migration Assay]

Tetracycline as Regulator of Inducible Gene Expression Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/2/pdb.prot3986

Category: Transfection Protocols: Stable Transfection Protocols

Protocol uses an autoregulatory system in which the transcriptional trans-activator tTA drives its own expression and that of a target gene. The first stage of the procedure describes how to generate stable lines of NIH-3T3 cells that express either tTA alone or tTA and the tetracycline-regulated target gene. - [Read Tetracycline as Regulator of Inducible Gene Expression Protocol]

TransWell Chemotaxis Protocol. - http://bioprotocol.bio.com/protocolstools/protocol.jhtml?id=p2156

Category: Immunology: Chemotaxis

TransWell Chemotaxis protocol. trans-well chemotaxis method from bioprotocol. The protocol is a method for studying migration towards a concentration gradient of chemoattractant of leukocytes (neutrophils, monocytes and lymphocytes) or other migratory cells. An upper chamber containing a suspension of cells is separated by a membrane from a lower chamber containing medium with chemoattractant. Chemotaxis of the cells from the upper chamber into the lower chamber can be quantified. - [Read TransWell Chemotaxis Protocol.]

Articles (11-19 of 19)

DNA Fragment Purification from Polyacrylamide Gels Protocol

A simple protocol for the purification of DNA fragments from Polyacrylamide Gels.

Quick DNA Agarose Gel Electrophoresis Protocol.

A quick and simple protocol for the electrophoresis of DNA fragments using agarose gels.

DNA Ligation Protocol

The DNA Ligation protocol described here contains the steps required to join together using ligase enzyme both plasmid DNA and insert DNA fragments in order to create a new plasmid. This new ligated plasmid can be transformed after into competent bacteria to produce DNA for mini, midi or maxi-prep isolation.

3' Rapid Amplification of cDNA Ends RACE Using PCR Protocol

3' Rapid Amplification of cDNA Ends RACE Using PCR Protocol. This protocol contains the steps for 3' end rapid amplification of mRNA by PCR. The first-strand cDNA is synthesized from total or poly(A+) RNA by priming from the poly-A tail of the mRNA using a oligo (dT) adaptor primer. The cDNA is then amplified via PCR using a gene-specific primer and an adaptor primer.

Bismarck Brown Stain

Bismarck Brown Stain.

Picking Transfected ES Cell Clones Protocol

This protocol a protocol on how to generate transfected embryonic stem (ES) cell clones. The previous protocol in this series is the Protocol for Electroporation of ES cells. The next protocol in the series is the Protocol on Disaggregation, Expansion, and Freezing of Transfected ES Clones.

Electrotransformation of BMH 81-17mut S for Isolating Site-Directed dsDNA Mutants

This protocol describes the electroporation of the BMH 81-17 mut S strain that is recommended for tranformation of the site directed mutagenesis of dsDNA (See Protocol on Site-Directed Mutagenesis on Double Stranded DNA). BMH 81-17 mut S are a mismatch repair defective (mut S) Escherichia coli strain. The probability that the two mutations will cosegregate during the first round of DNA replication is increased in this strain.

Vector Design Protocol for Transgenic Mice Generation

The protocol gives general considerations for the design of targeting vectors for transgenic mice. The protocol shares tips in the design of knock-out and knock-in vectors and some of their strategies for producing homologously recombined embryonic stem cells.

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