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PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Examination of the DNA banding pattern in an electrophoresis gel, during the preparation of a DNA sequencing autoradiogram. DNA (obtained from a plant cell in this case) is cut into fragments by a restriction enzyme. These fragments are separated into bands by the electrophoresis process. The banding pattern in pink fluorescence is revealed under ultraviolet light. Photo taken at Escagen, Inc., California, USA.
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