RNA Isolation from Drosophila – Don’t Let the Cuticle Scare You!

RNA Isolation from Drosophila – Don’t Let the Cuticle Scare You!

Isolating RNA from either Drosophila larvae or adult heads can seem a bit daunting, primarily due to the presence of the cuticle. The cuticle is a protective exoskeleton comprised of insoluble collagens, cuticlins, glycoproteins, and lipids. While it may take some force to remove the cuticle, you can do this easily and without compromising your…

Quick reference: Determining DNA Concentration & Purity

Quick reference: Determining DNA Concentration & Purity

The most comprehensive way to evaluate DNA concentration and purity is to use both UV spectrophotometeric measurements and agarose gel eletrophoresis. This quick reference guide gives an overview of the information that can be derived from both. UV spectrophotometric measurement of DNA concentration and purity DNA itself, and most of the common contaminants found in…

4 Tips for Extracting RNA from Unfriendly Tissues

4 Tips for Extracting RNA from Unfriendly Tissues

Some tissues are tricky to work with. This truth was lost on me in the early years of grad school because I worked with liver samples. If you’re extracting RNA from liver samples, you’re likely not losing sleep over your massive RNA yields. But for the folks doing RNA extractions with less willing donors, such…