Electrophoresis uses an electric field to separate particles in a medium (like a gel) based on their size, charge, or a binding affinity.
The image of all 3 components was photographed by Russell Illig per a handwritten note; the other image is unattributed.
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Illig, Russell. “Beckman Spinco Division Model R Paper Electrophoresis System,” 1963. Beckman Historical Collection, Box 60, Folder 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/1v53jx507.
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