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For several decades, Ethidium Bromide (EtBr) was the molecular biologist’s default dye for DNA staining. Now, EtBr is being consigned to the history books. It’s time to have a historical look at where it all started.
A Brief History of Detecting Amplicons The Old Days of Ethidium Bromide In the early 1990s, quantitative (q) PCR was in its infancy, and despite PCR itself already being around for 10 years, there were no easy ways of precisely quantifying the amount of DNA that was amplified in a PCR reaction. In those days PCR…