A method for analyzing or purifying samples. Molecules are separated by their relative weight, charge, or stereochemistry, which affect their speed of movement through a gel.

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Alternatives to ethidium bromide for staining small nucleic acids?

While ethidium bromide works well for staining larger single-stranded RNA or double-stranded DNA molecules, it doesn't stain smaller nucleic acids very well. I observed that at around 20 bases and ...