Electrophoresis gel (IMAGE) American Society of Agronomy Caption Electrophoresis is a scientific technique used to separate molecules of DNA or proteins. The way the molecules travel through the gel, shown here, helps scientists understand important characteristics. Credit Credit: Jonathan Windham Usage Restrictions For use with this story only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.