<p>I took a scan of a protein gel I ran and noticed that the wells at the top had taken some damage during transportation.
</p><p>How it works:
</p>
The gel is sandwiched between two glass plates, and a voltage is applied from top to bottom.  The wells seen here are injected with the protein samples, which are driven by the voltage downwards through the gel.  Smaller proteins move faster, whereas larger proteins get tangled in the gel's interconnected fibers and move more slowly.  By dipping the gel in a stain that adheres to proteins, they can then be visualized as dark bands.
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