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Gel electrophoresis

Gel electrophoresis showing six DNA tracks. In the first row (left), DNA with known fragment sizes was used as a reference. Different bands indicate different fragment sizes (the smaller, the faster it travels, the lower it is in the image); different intensities indicate different concentrations (the brighter, the more DNA). DNA was made visible using ethidium bromide and ultraviolet light.

<img typeof="foaf:Image" src="http://statelibrarync.org/learnnc/sites/default/files/images/gel_electrophoresis.jpg" width="1600" height="1200" alt="Gel electrophoresis" title="Gel electrophoresis" />
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