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Description:This historic 1964 image depicted John Hall as he was operating an electrophoresis apparatus in one of the Centers for Disease Control’s laboratories.
Electrophoresis employs a uniformly maintained electric field, which influences particles suspended in a fluid through which this electric field is passed. It is a process, which is still widely used today when it is necessary to separate different molecules from one another based on their unique surface charge, and their size. The uniformly dispersed electric field influences the movement of the molecules being separated, and the porous channels throughout the matrix allows smaller molecules to move more readily through the medium than larger molecules. This phenomenon of molecular migration, is measured base on time, thereby, giving the scientist an appreciation for the molecular components of a given substance being analyzed.
High Resolution: Click here for hi-resolution image (18.01 MB)
Content Providers(s):CDC/ James M. White
Creation Date:1964
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.