Nonradioactive methods in comparison to those using radionuclides are now becoming popular because of safety, environmental, and cost concerns. The modified technique described here is much faster, easier, and safer than the conventional procedure utilizing radioactive material and large-formatted polyacrylamide gel, or other nonradioactive DD techniques. Also, it maintains good reproducibility and specificity. This DD protocol offers a rapid and reliable nonradioactive method for comparing gene expression patterns in various research.