Getting Started with Tissue Culture

The cultivation of mammalian cells in the lab, or tissue culture, is a critical tool for many scientists. Mammalian cells provide scientists with the means to study biological processes on the cellular level instead of having to work with a whole organism. Mammalian cells can also be used to produce vital tools in the lab, such as antibodies or viruses.

This video from Addgene provides best practices and advice for those new to tissue culture.

How To: Purify DNA from an Agarose Gel

This video from Addgene explains how to excise a DNA band from an agarose gel. This protocol begins after our DNA has been prepared and separated using agarose gel electrophoresis.

Gel purification allows you to isolate and purify DNA fragments based on size. Following gel electrophoresis, you can cut DNA bands out of the agarose gel and purify the DNA samples. This is a commonly-used technique for molecular cloning, such as PCR- or restriction enzyme-based cloning.

Polymerase Chain Reaction (PCR) Protocol

Do you have a short region of a DNA molecule that needs to be copied? Alyssa, a QC scientist at Addgene, walks you through the PCR process.

A standard Polymerase Chain Reaction (PCR) is an in vitro method that allows a single, short region of a DNA molecule (a single gene perhaps) to be copied multiple times by Taq Polymerase. From a single copy of DNA (the template), a researcher can create thousands of identical copies using a simple set of reagents and a basic heating and cooling (denaturing and annealing) cycle.

How To: Design Primers for PCR

Are you looking to design a primer for your PCR? Jennifer Tsang, Science Communication and Marketing Coordinator at Addgene, is here with some tips for creating successful primers.

Oligonucleotide primers are necessary when running a PCR reaction. One needs to design primers that are complementary to the template region of DNA. They are synthesized chemically by joining nucleotides together.